Afr 300 bbc heads. 50 for additional information.

Afr 300 bbc heads 43 60" 6. Edelbrock #2907 Victor R454 intake is also a good match. Would the 265 choke the top end too much? Would a combo like this spin to say 5800-6000rpm? 2. 457cc BBC . Torque curve stayed pretty flat from 4500 to about 6600. 880 Exhaust Valves, CNC Ported with Parts, Roller Cam 1. Straight up type guy. 55-3. I assume this was mainly because the frame front was blocked by the moderate dome. AFR Heads, 2110 BBC AFR 345 Magnum Heads, Partial Ported, 117cc AFR, BB Chevy, Aluminum Heads, Intake Runner 345cc, Combustion Chamber 117cc, 2. 725 Max Lift, Pair Jan 26, 2011 · I'm running a 315 head on a 540 pump gas engine as well. (15) AFR 335cc Enforcer BBC Cylinder Heads 3001 (AFR) Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! Mar 1, 2008 · Check out this 496 Chevy Big Block Engine get tested with Edelbrock Performer RPM Cylinder Heads and Dart Cylinder Heads other cylinder heads are TFS, Brodix, GM and Pushrod, Featured in Car Craft Nov 5, 2021 · How much more power will the AFR 265s make over the Brodix heads on a 468 bbc with correctly matched camshaft? 1971 Chevelle SS454, T56 Magnum 6 speed, 3. the AFR Magnum 300 heads proved to be the optimum combination by producing 729 hp and 639 lb-ft of Jan 3, 2020 · I have a set of 300's on a 14 to 1 565 which have been worked a little bit. The 345cc come standard with AFR's trademark . Stock header and chassis fitment may be an issue for tight engine compartments and chassis. Aug 7, 2013 · Here are some interesting numbers from the latest v2 AFR300cc head after Tony hand fluffed them. thick cylinder head deck, reinforced rocker stud bosses, and premium one-piece stainless steel 2. I've proved that theory wrong to many times. 45). 300/1. Apr 5, 2021 · "505 BBC. 645 Springs . Mar 4, 2016 · And I also get thinking things like if I am going to spend $2400 on some AFR 265, would it be just as good to save a little more and get the AFR 300'sthen I stop and say, I started by looking at a set of Promaxx for $1500, now I'm double that spending over $3ktypical car building I guesswhere do you stop and say this is good enough. 675 lift, 234, 244 at . 5 =====162. 400 . Heads are designed for 3/8" pushrods. Emissions Note: This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing. 653/0. 0012"-. Shop Cylinder Heads at Summit Racing. The heads will have larger intake valves installed and be reworked where needed. 19 valve and performance valve job will flow over 300cfm and that's 700hp potential. I’m on a tight budget. Boosted/Nitrous or Dec 7, 2024 · The AFR Magnum 300's were the only head that day that made over 700hp. 250'' raised exhaust port location. Jan 2, 2019 · Forget the AFR 300's. The 300cc oval port cylinder heads feature 100% CNC machined intake runners, exhaust ports and combustion chambers; our 300cc oval port flows 388 CFM at 0. AFR’s new 457cc 18° Big Block Chevy cylinder heads are our best performing highest-flowing heads in our BB Chevy lineup. Anyone have actual dyno results of there 496 with 290cc heads. 300" valve I believe. Component upgrade and machining options are available to customize AFR Heads to your specific build (see pg. 300" valve, not the older 26 degree heads. 650 414 . Shop Now at the Guaranteed Lowest Price! $5 off $49 / $15 off $249 / $30 off $499 / $65 off $999* - Use Promo Code: 2025 Aug 23, 2016 · My old 110cc 60459s (BBC Performer RPM) had 12:1 with a 34cc dome with ROSS Pistons' Edelbrock specific domes and this required 40° total advance. 1969 Chevelle 540 BBC 746 HP 692 TQ Straub Hyd Roller AFR 305 Heads AFR Heads, 3708 AFR BBC 18 Degree, CNC Ported (1 Head) AFR, BB Chevy, 18 Degree, Aluminum Heads, Intake Runner 457cc, Combustion Chamber 90cc, 2. 600 . $20 Off $250 / $40 Off $500 / $80 Off Oct 7, 2012 · I am putting one together as we speak== AFR oval port 300 cc heads, Race tec, 20 cc dome pistons,a big Comp Cams hyd roller, and a big carburetor on an Edelbrock victor intake. this is not a world beater but it tells me that with the afr much better head i think these pump gas street motors can run high nines easy and at full street weight . High Volume/Pressure Oil Pumps - If you are using a high volume or high pressure oil pump it can submerge the valve seals in oil causing smoking or oil consumption Jan 10, 2013 · Tony Mamo the R&D guru at AFR has made an agreement with myself to rework, tweak, upgrade, or otherwise massage the high velocity, medium size ports on his design AFR 335 heads that I purchased through Chris Straub. 700" 423 325. intake and 1. 800 exhaust valves. General Recommendations for AFR Cylinder Heads: Nov 25, 2023 · Good evening gentlemen, what are the best flowing bbc heads @2. 300'' intake These 325cc heads come standard with AFR's trademark 3/4 in. Thinking about going with Dart 325 Pro 1 with 2. 88" exhaust valves, and a solid roller off-the-shelf Lunati Find CHEVROLET AFR 300cc Magnum BBC Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! AFR 300cc Magnum BBC cylinder heads are suggested for aggressive builds. 325" intake valves when utilizing a factory block? AFR's 345cc BBC cylinder head is recommended for radical street/strip, "Pro Street," or racing applications with displacements up to 572 cubic inches, operating at or below 7000 RPM. Nov 23, 2015 · AFR 305 Heads "America is all about speed. I'm building a 496 right now and it's for a 71. 5:1 compression, The 335cc heads come standard with AFR's trademark 3/4 in. 700. It's a 14 to 1 heavy car footbraker. They're really not even oval; almost square. Check out the details and corrected power here in this install! Lifting the aluminum AFR BBC heads, very cool. Going to be used for a weekend street warrior and drag strip 1/4 mile split 50/50. AFR 265cc Oval Port Magnum BBC cylinder heads are designed to be used on engine displacement up to 468 cu. 300. 50 for additional information. The 300cc oval port cylinder heads feature 100% CNC machined intake runners, exhaust ports and combustion chambers; our 300cc oval port flows 388 CFM at 0. Boosted Nov 11, 2010 · KC asked me to post the results for his pump gas 496 with the AFR 265cc CNC chamber heads, Chris Straub hybrid solid roller, Victor Jr & Pro Systems SV1 Not too shabby for a set of poor little 265cc oval heads RIGHT OUT OF THE BOX, ABSOLUTELY NO EXTRA WORK I did not dyno this it was independently dynoed in Las Vegas by HBR Engines Find AFR 265cc Oval Port Magnum BBC Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! AFR 265cc Oval Port Magnum BBC cylinder heads are designed to be used on engine displacement up to 468 cu. They come fully assembled with the identical components found in Find AFR 357cc Magnum BBC Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! If huge horsepower is what you are searching for, AFR 357cc Magnum aluminum cylinder heads will certainly deliver. I have been told that AFR 305's fully ported are the best choice, but at $3400, they are out of the budget. The RHS heads are 320 CC heads but look suspiciously like a ProMaxx head. AFR 300cc Magnum BBC cylinder heads are suggested for aggressive builds. Piston to valve clearance was measured at . Oct 7, 2021 · This is for a 496 12. The intake runners and exhaust ports are partially CNC machined, while the combustion chambers are offered with partial or full CNC machining with a bowl blend. Dec 2, 2012 · Congratulations. 600" 404 310. Dec 31, 2015 · Tom, just another heads-up on what you may run into (pun intended) with an off-the-shelf open chamber BBC piston dome. 880 valves, 13. Oct 2, 2008 · Magnum 325cc BBC Cylinder Head AFR's Magnum heads are available with a variety of upgrades, ranging from intake port sizes starting at 305 cc all the way to 357 cc. 2 @ 125mph in a 3350lb 72corvette (Traction troubles) New Combination with the AFR heads: - 439ci @ 11. Jun 12, 2020 · Heads that seem to fit the relatively 'out-of-the-box' with valve work and cleanup by my engine shop so far seem to be, in no particular order: AFR 300 Oval or 315 Rectangle CNC Brodix BB3 Xtra O 332 Pro-Filer 320 Manifolds that seem to get overall good reviews are: Sniper Jr. I also can't leave out the AFR offerings as the 335 cnc AFR would work wonders as well. Figuring on AFR Heads, 2110-1 BBC AFR 345 Magnum Heads, CNC Ported Chamber, 121cc AFR, BB Chevy, Aluminum Heads, Intake Runner 345cc, Combustion Chamber 121cc, 2. CNC-Machined Combustion Chamber: Yes Free Shipping - AFR 377cc Magnum BBC Competition Racing Heads with qualifying orders of $109. 750" 427 . Combustion Chamber Size-90cc 385cc BBC . 400 Valve Guide Clearance - Your AFR Heads come with proper guide clearance (. Jan 23, 2011 · If you can afford the newer heads the Brodix BB-3Xtra "O" 332 cc CNC heads would work much better than either of the aforementiond heads. Proof in point would be the results of the recent CHP test (the June issue) that just hit the Mar 27, 2023 · Get the Best Performance with AFR - Airflow Research 3001 Fully Assembled 335cc Enforcer Cylinder Head Big Block Chevy 3001 parts at JEGS. For applications above these limits shaft mount rockers are typically advised. Cam is a roller 242/640 intake, 246/650 exh. These high flow heads feature a . the Dragon Slayer is a 26 degree BB2 based head, an as cast version of the BB2 Xtra CNC head. They are available with an optional 114cc combustion chamber as well. Oct 24, 2009 · Here's a comparison of my AFR 335 heads on a 540 BBC with some good heads that could go on a 427 LS7 motor. 800" of lift. A smaller dome and therefore lower comp ratio in these heads might make more power. 950 Max Lift, Titanium Retainers, Price Per Head Designed to seamlessly integrate with our acclaimed AFR Magnum Oval port cylinder heads, this manifold promises a hassle-free enhancement to your engine’s capabilities. 880 Exhaust Valves, CNC Ported Chambers, Solid Roller Cam Spring . 625 raised exhaust port locations. Int 154 218 278 323 347 354 Aug 4, 2022 · how much power does a peanut port bbc head make? how much more power does a rec-port bbc head make? can ported oval port heads make more than stock rec port Apr 13, 2008 · When you opt for the CNC chamber upgrade you close the gap on the full port CNC job by $300 or so (still saving $600 or so when compared to the fully CNC ported heads we offer), BUT, have a set of heads that will provide close to the same results. The standard combustion chamber volume is 119cc on these AFR's 325 "as-cast" pieces. The example being some AFR heads I'm considering vs Brodix heads. Jan 25, 2023 · You can make a really nice set of heads for a lot less than a new set of alum heads. thanks Jun 22, 2011 · - Edelbrock Performer RPM 6045 Heads - Comp cams XR286-R solid roller camshaft (248/254@0. It is the customers responsibility to verify proper piston to head clearance. Current setup: weight: 3450 w/driver compression: 11. 400 Intake 1. Don't fall into the larger head is ok when a blower. 800 Exhaust Valves, 100% CNC Ported, Roller Cam 1. 750+ gross valve lift mark to make better use of the substantial airflow found in the higher lift range. 8 comp ratio. Still looking for 10. 94" RPM Air Gap, port height ---1. I've seen some awesome info on the 265cc afr heads from vortexpro. 350 bore not a 4. 66 lift Isky ez roll lifters ATI aluminum ring damper. Feb 6, 2014 · I have quite a few customer with AFR heads on their engine. 0016") for most applications AFR's 345cc BBC cylinder head is recommended for radical street/strip, "Pro Street," or racing applications with displacements up to 572 cubic inches, operating at or below 7000 RPM. 530" =====4. 5:1 compression 230ish HYD RLR TH400 3. I thought that would be too large a port for this size engine. shifting at 6300 rpm. General Recommendations for AFR Cylinder Heads: Bar Codes - Please keep the bar code & paperwork shipped with your head, these contain all the specs for your heads when calling AFR. CALL SHANON AT 507 445 3235 WITH ANY QUESTIONS. 650" lift. 100 - 78/69 =====78. Nov 18, 2024 · These 325cc heads come standard with AFR's trademark 3/4 in. 05 107 split 850 Quickfuel,Air gap intake, th400,12 bolt with richmond 373 gears. 10@118mph 9-30-22 AFR's 300cc heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. AFR strongly recommends material be removed from the piston and not the cylinder head. At what engine displacement and RPM is the 2. Boosted Jul 18, 2018 · Hi Guys , i'm building a 632 BBC conventional headed BBC for a customer, it will be pump gas and hydraulic roller cam and will be using stud mounted rockers, i'm tossing up between an AFR 385 cyl head and a Brodix BB3 Xtra O 365cc cnc ported head, the Brodix is a lot more expensive but whats everyone's opinion on which head would work better, is the extra money really going to give me any gains ? Mar 26, 2021 · Brodix did recommend the BB-3xtra 345 heads for a 496. last night while measuring for pushrod length i noticed that the guideplates actually contact my comp cams pushrods in the tapered portion of the pushrod(3/8" pushrod with 5/16" ends). 400 - 309/240===== 290 AFR Heads, 2010-TI BBC AFR 357 Magnum Heads, CNC Ported, 121cc AFR, BB Chevy, Aluminum Heads, Intake Runner 357cc, Combustion Chamber 121cc, 2. Oct 11, 2008 · AFR 305/315cc Magnum BBC Cylinder Heads Cylinder Heads, Competition Porting, Aluminum, Assembled, 121cc Chamber, 315cc Intake, Chevy, Big Block, Pair . Here are the specs: AFR Magnum Street: 265cc oval ports, 24* valve angle, $2,234/assembled pair . 880 Exhaust Valves, CNC Ported, Solid Roller Cam Springs . 200 - 164/142. 30" intake valves, 1. " - Eleanor Roosevelt , 1936. I am also thinking staying with USA casting for resale value. Jun 4, 2023 · Guys, what does surprise me is that AFR selected to use a bigger, less street friendly head as there BBc China Ginny pig! A 335 sized head is a more serious engine combo that one would seem LESS inclined to sway to a cheaper off-shore casted head? I thought they might do something between the 265 and 290 as a cheaper "street" head. High Volume/Pressure Oil Pumps - If you are using a high volume or high pressure oil pump it can submerge the valve seals in oil causing smoking or oil consumption Mar 9, 2015 · AFR 300cc Magnum Ovals 112cc chamber alum heads 10. They produce tremendous airspeed and are ideal for 396-509 cu. 1. 637 Jun 25, 2008 · C3 Tech/Performance - BBC Heads AFR vs Edelbrock - I'm considering various cylinder heads for a 496 BBC I'm building. Nov 23, 2015 · Just wanted to post these results of a 565 inch BBC with a pair of Mamo prepped AFR 300 rovals. Sep 1, 2014 · 69 El Camino SS Custom ATK 496 Stroker,10. 88 ex & Darin's Profiler has a 1. 5. 520 BBC 6. CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART The cylinders don't know or care how big the port/valves are, they only care how much air is flowing through them. 850 Max Lift, Titanium Retainers, Pair Aug 22, 2015 · 1967 Royal Plum, 434BB, AFR Heads, 3. 300" intake valves. 2 compression, AFR 290 Heads cam 617/. AFR offers their own gasket (PN 6893) as the correct choice. 423-391-7774; 198B Industrial Park Road, Suite B, Piney Flats, TN 37686 Nov 13, 2006 · Engine Mods - Any Experiences on New AFR BBC Heads? - Anyone have experiences on the new AFR Big Block Chevy cylinder heads? My brother is looking at them seriously for his 427 (now 461) Capricesspecifically the 315 CC models. Made 900 horsepower from 6700 to 7100 and 760 lbft at 5500. 650. 99 or more! Recommended for radical "Pro Street" or racing applications with displacements up to 605 cubic inches, operating at or below 7400 RPM. 500 . Oct 29, 2017 · That head can be had with either 2. 750'' (3/4'') thick cylinder head deck, reinforced rocker stud bosses, premium one-piece stainless steel 2. For a 540 I'd look at the Pro Maxx 317 for a budget head with a 2. 0016") for most applications. Dart, Brodix, Profiler, RHS, Edelbrock all make them. Sep 1, 2009 · AFR has released an all new 375 cc Magnum Series BBC head, the largest and highest flowing BBC product in its line-up with flow numbers that are closer to 18 degree Pro-stock style heads. Lifting the iron AFR’s tech department can assist with more information. Heads have been ported and polished. Thank You Dec 27, 2003 · Congratulations. 569 237/241 at . AFR Heads, 2110-1 BBC AFR 345 Magnum Heads, CNC Ported Chamber, 121cc AFR, BB Chevy, Aluminum Heads, Intake Runner 345cc, Combustion Chamber 121cc, 2. 850 Max Lift, Pair Nov 11, 2024 · I decided to a buy the AFR 4910 intake for my 502BBC with 265 AFR heads. 880 Exhaust Valves, CNC Ported with 1. 00 over the AFR heads. 310" bore. 300 Intake 1. AFR Big Block Chevy With some domed aftermarket pistons, it may The 335cc heads come standard with AFR's trademark 3/4 in. For the record here are some of the measurements compared to an Edelbrock RPM Air gap 7516: AFR 4910 Intake, port height --- 1. operating below 7,000 rpm—and are capable of flowing 400 cfm at 0. 050, Lemons Headers, Holley Multiport Fuel Injection, TCI 6X 6Speed Automatic, 12 bolt Posi Eaton TruTrac, 3:31 Richmond Gears, front and rear power disc brakes, Global West Suspension, etc. 73 rear gear. Our small port, high velocity 265cc cylinder heads are a cost effective choice compared to re-worked factory big block chevy cylinder heads. The AFR ovals are based on the same low port architecture of the GM "roval" port. 27 1. Feb 2, 2024 · AFR's 300cc heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Shop Cylinder Heads Apr 21, 2015 · Adding AFR 265 oval port heads can add at least 80 horsepower. The 1st one is the AFR 345 2nd one is the AFR 357. AFR recommends the use of . Sounds like the AFR 300's will be a game changer. Exhaust Port Volume-135cc. 190 valved 049-781 will run with that CNC ported AFR head, because Im sure it will not! Its getting hard looking at those greasy GM head castings every week knowing how much work its going to take to turn them into a head capable of making 800 plus HP. with borlas. 88 exhaust valves. mild 680 lift,255/263 . 800 431 336 A&A/All Pro LSW 12° Cylinder Head Flow: (285 cc heads) Lift Intake Exhaust. 600. Just cammed a 489 with a set of the 290's, it made 797HP with a hyd roller. The 315cc heads are AFR's largest and best flowing BBF heads! They feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings, and high quality components throughout with . tested with 4. The intake runners and exhaust ports are partially CNC machined, while the combustion chambers are offered with partial or full CNC machining with a bowl blend; this torque monster is capable of flowing 354 CFM at 0. Recommended for aggressive street, street/strip or race builds with displacements up to 540 cubic inches, operating up to 6800 RPM. 200 . Super Victor Find AFR 290cc Oval Port Magnum BBC Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! AFR 290cc oval port Magnum BBC cylinder heads feature 100 percent CNC porting on the exhaust, intake, and combustion chambers to provide the ultimate in oval port performance. 880 in. 850 Lift, Pair AFR 457cc 18* BBC Magnum Competition Heads . He is as congenial in person as he is on the web. in Jun 22, 2014 · C3 Tech/Performance - BBC Heads AFR vs Edelbrock - I'm considering various cylinder heads for a 496 BBC I'm building. 4:1 compression – Pump Fuel Jan 5, 2005 · 1969 Chevelle 496 BBC W/AFR 305's I'm running the same AFR heads you have, on my 489 and I ended up with a Comp custom solid roller cam, 252/262 @. Say goodbye to the painstaking task of port matching, as it is a direct bolt-on solution for our select cylinder heads. Exhaust Port Volume-143cc. . 250 or . 600 Valve Guide Clearance - Your AFR Heads come with proper guide clearance (. 250 Intake 1. 27 @130. 700 Jun 24, 2010 · stock jegs (canfield )310 cc heads vic jr intake and 950 hp carb 2"headers 4500 stall best pass 10. 3. Buying them with some PAC specific parts and they save $1,143. Free Shipping - AFR 335cc Enforcer BBC Cylinder Heads with qualifying orders of $109. Specifications: Intake Port Volume-265cc. $5 Off Your $100 Mobile App Purchase - Get the App - Final Day! AFR's 325cc BBC Enforcer Cylinder heads feature our Permanent Mold "As-Cast" Technology surfaces on the intake runners, exhaust runners and combustion chambers that allows for extremely accurate and repeatable port location/performance. 31 Posi Youtube Channel. AFR's 3001 325cc BBC Enforcer Cylinder heads feature AFR Permanent Mold “As-Cast” Technology surfaces on the intake runners, exhaust runners and combustion chambers that allows for extremely accurate and repeatable port location/performance. It is available with 2. exhaust valves. That said, as suggested above, a set of 305's will serve you well but whatever head you choose will require some planning on the entire combination including some intake porting as will the heads for optimum results. For ideal geometry and wipe pattern AFR strongly recommends AFR stud mount rockers part #6043 for applications below 7400 RPM and . these heads flow very well for a 315 runner. The upgrades are almost too numerous to list, so we'll take a look at the as-cast, CNC bowl-blended, aluminum Magnum 325cc intake port head. 850 And just to be clear before it comes Sep 5, 2016 · With more flow potential (compare the included charts) the 300 cc heads will be the best choice for large-displacement, power adders, and/or high-rpm applications. 30 intake valve, you can get a 115 or 119cc chamber, killer flow numbers and will work with a typical oval port intake, unlike the AFR. 6:1 compression Custom ground solid roller billet cam 248/254 @. 5:1 CR 632 CID engine made 775 FT/LBS @4,000 RPM, and 802 HP@5,900 RPM with a 1050 CFM Dominator carb, MERLIN X single plane manifold (unmodofied and right outta the box) crummy Merlin III 350cc heads (unported) with 2. 30 intake valve? The AFR 357cc heads come standard with AFR's trademark 3/4 in. All AFR big-block Chevy heads have water jackets that are compatible with Mark IV, Gen V, or Gen VI blocks when used with the appropriate head gaskets. Even if your comp is low, the size of the piston's dome is not important as interference is at deck height. Thing made 900hp with them. Nov 2, 2014 · afr 300 oval bbc heads Jump to Latest 6. AFR offers two versions of oval port heads: 265-cc as-cast intake runners or CNC ported with 290-cc runners. 8:1/T56/3. Thanks, Bill Jul 28, 2009 · AFR BBC Oval Port Heads. They come standard with stainless steel 2. The heads have also been modified to accept the 2. 25 or 2. 700-. antisipating at least 700 hp and 650 tq. Looking at making 800+ HP on engine. 400" 323 253. I have got it down to 2 heads both are AFR's. 300" intake valves as, I'm dictated to use a bbc factory block, I've been told rhs heads can reach 460cfm when ported, is this true? And can I use 2. AFR Heads, 2001 BBC AFR 335 Magnum Heads, Full CNC Ported 121cc AFR, BB Chevy, Aluminum Heads, Intake Runner 335cc, Combustion Chamber 121cc, 2. You can have a Brodix head a little cheaper but you want the 24 degree head with the 2. AFR 265cc BBC Magnum As-Cast Heads . 89@102mph 1/8 mile 6-24 L-29 461 BBC 11. AFR advertises the 4910 as the ultimate out of box match for their oval heads. 8K views 13 replies 8 participants last post by old school 427 Nov 26, 2014 Jul 18, 2012 · Equipped with the Procomp heads, the BBC stroker pumped out 690 hp and 600 lb-ft of torque. 7 ratio rockers for 0. My cylinder head choices are currently RHS Pro Action heads or Edelbrock Victor Jr. 10. Recommended for street, strip, or towing Jan 30, 2020 · Hey guys this is my first post. 94" (Identical) Apr 1, 2016 · Conventional wisdom suggests big power requires big cylinder heads, but don’t count out a set of AFR oval port heads, especially after they have been given the once over by Merlin the (flow) magician at Mamo Motorsports. AFR's 345cc BBC cylinder head is recommended for radical street/strip, "Pro Street," or racing applications with displacements up to 572 cubic inches, operating at or below 7000 RPM. Exhaust Port Volume-132cc. Just by comparing the manufacturers head flow sheets, they are not that much different. 315cc FloTec heads. 19/1. 280cc Street Head Flow Chart . Looking at a cam around . It's being built as a hipo street engine. (20) 2. 00. With AFR's fully CNC-ported 357cc heads flowing 425 cfm, they represent the ultimate in airflow for your big block Chevrolet. 625 lift, 250 ish duration) in a 3600# vehicle. The 300cc heads are AFR's largest and best flowing BBF heads! They feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings, and high quality components throughout. 5 Bore fixture. 050 . 4. 850 Max Lift, Pair 2. 350" intake valve size. AFR's 3001 335cc BBC Enforcer Cylinder heads feature AFR Permanent Mold “As-Cast” Technology surfaces on the intake runners, exhaust runners and combustion chambers that allows for extremely accurate and repeatable port location/performance. 5:1 with a 300 shot of nitrous. 1. May 1, 2010 · The first attachment is the RFD heads, second is the new Darin Morgan Profilers & third is the all new AFR heads Note that the AFR head is untouched as it comes off the CNC & has 45° seats Both the RFD & Profiler are 50° seats All have a 2. Tony will be modifying the heads in his shop at home. Free Shipping - AFR 300cc Magnum BBC Cylinder Heads with qualifying orders of $109. plan on shifting at around 6800 / 4. A few 24 degree CNC have 2. Specifications: Intake Port Volume-290cc. If you're OK with an oval I'd look at the Brodix 24* BP RR BB-3 XTRA O. Recommended for aggressive street, street/strip or race big block chevys with displacements up to 540 cubic inches operating at or below 6800 RPM. 700" lift and is the ultimate street/race weapon without having to step up to a rectangular port design AFR's 300cc heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Sep 26, 2017 · Hydraulic roller cam (. 550 Hydraulic Roller Cam Springs, . 310 bore. 66/. 781's with nothing more than a 2. Jump to Latest '67 Chevrolet Biscayne- SS427 L-36/TH400, '67 Hell Camino-BB 427/TH400 , '66 300 Deluxe 2 door-230/PG AFR 290cc BBC Magnum Competition Heads . 880 Exhaust Valves, Partial CNC Chambers, Solid Roller Springs . 750 on lift max RPM 7000-7200. The 300 cc heads sell for $2,822. 400 intake valves and 1. Our combustion chamber shapes are very critical to flow and altering the cylinder head can adversely affect flow and power production. 7-1, Ported Sniper JR, 268 cam, under . 5 to 1 (18cc dome) 489/496 BBC with AFR 305 (CNC port option) cylinder heads combos if anyone is willing to post with some dyno numbers. Intake runners are approximately 330cc. 100" 75 General Recommendations for AFR Cylinder Heads: Bar Codes - Please keep the bar code & paperwork shipped with your head, these contain all the specs for your heads when calling AFR. They also caution not to port-match your intake manifold to a Fel-Pro gasket, as it doesn’t match the heads properly. 200" 176 157. 660 gross lift - 2" primary headers & twin 3" system RWHP – 390 11. This is what I would call a street racer type engine, that will be driven very little, like 1000 to 1500 miles a year== It will made 700 to 750 HP, and it will run on 91 Free Shipping - AFR 300cc Magnum BBC Cylinder Heads with qualifying orders of $109. Using Isky valvetrain and Ross pistons with Jones Racing vacuum pump. Component upgrades and machining options are available to customize AFR Heads to your specific build. Will I have any issues by going to a 2. Jan 3, 2009 · I have a 461 bbc and I am replacing my #188 iron GM heads with a set of AFR 315 full cnc heads and am looking for ideas to optimize my setup. 68 Camaro~406ci 2. If this 565 BBC is any indication, there are a great many big blocks sporting the wrong shape intake ports. 300 in. Buying the assembled 290 as they offer them saves $1,411. Combustion Chamber Size-109cc Jan 30, 2010 · I would be insane to think my basic 2. thick head deck, reinforced rocker stud bosses, and premium one-piece stainless steel 2. . These cylinder heads were targeted at larger cu. 00 of labor. No one mentioned the Dart Pro 1 325 yet. I currently have a set of Edelbrock Performer RPM Rect port heads on the shelf I am considering using. 300 . Any advice would be nice on heads and cam selection. Specifications: Intake Port Volume-457cc. Feb 14, 2011 · If you PM, email or call me I may be able to save you a buck or two on the heads Hi Remi You need a set of these too Flow on the 315's on my bench from probably 2 or 3 years ago AFR 315 CNC 4. 050 lift. 700" lift and is the ultimate street/race weapon without having to step up to a rectangular port design. My 335 AFR cylinder heads Lift Intake Exhaust. 10 gears. 90 gears, New Chris Straub Hyd Roller!, 200r4. 9 w/121cc chamber intake: holley strip dominator -will probably change carb 4150 w/ proform 1050 hp style main body BBC 24 Deg 300cc Oval Port Heads Full CNC; 112cc Chambers; with VJ; No Parts. operating at or below 6,200 rpm—providing tons of bottom-end torque, tremendous throttle response, and great all-around power. 5/124mph -with a "top fuel" timing curve - sold The 315cc heads are AFR's largest and best flowing BBF heads! They feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings, and high quality components throughout with . Throats sized and SSR polished, 2. No need to spend any money on porting. AFR's 357cc cylinder heads features fully CNC machined intake runners, exhaust ports and combustion chambers; capable of flowing 425 CFM at 0. 11 gear / glide / 4500 stall / 3000 lb car . 90/ 4000lbs RW 11. To ensure trouble free operation of AFR cylinder heads & parts please view the footnotes on pg. High Volume/Pressure Oil Pumps - If you are using a high volume or high pressure oil pump it can submerge the valve seals in oil causing smoking or oil consumption AFR'S 335cc BBC Enforcer Cylinder heads feature our Permanent Mold "As-Cast" Technology surfaces on the intake runners, exhaust runners and combustion chambers that allows for extremely accurate and repeatable port location/performance. 850 Max Lift, Pair AFR Heads, 2101-1 BBC AFR 325c Magnum Heads, CNC Ported Chambers, 121cc AFR, BB Chevy, Aluminum Heads, Intake Runner 325cc, Combustion Chamber 121cc, 2. 30 intake valve upgrade. in. Going into a 72/73 nova 3500 stall turbo 400, 4. I think for your application the 325+cc would be a bit lazy with the 10. 790 lift. 050) - 1. 120. 850 Max Lift, Pair of Heads Jan 5, 2007 · i am having a couple of issues with my afr 305 heads. AFR's 335cc BBC Enforcer cylinder heads feature their Permanent Mold "As-Cast" Technology surfaces on the intake runners, exhaust runners, and combustion chambers that allow for extremely accurate and repeatable port location/performance. These AFRs are based on an LS6 style chamber, but are not exactly the same. Just port match the intake. 300 - 247/198 =====239. As indicated by the name, the oval-port offerings from Airflow Research featured 300cc intake ports combined with 123cc 335cc BBC Enforcer Flow Chart . 165 in. The standard combustion chamber volume for the fully CNC-ported 335cc is 121cc. General Recommendations for AFR Cylinder Heads: 1 day ago · AFR 335cc Enforcer BBC Cylinder Heads. 5 compression ratio bracket type engine. I am building a 540 pump gas 10. 400. 300" valve. s. 350" a benefit? What is the better of them under $3500 bare? Mar 16, 2012 · Heads currently are closed chambered heads that came off of a 396/375HP. 880 Exhaust Valves, CNC Ported Combustion Chamber, Solid Roller Springs . 350 intake, RFD & AFR have a 1. Maybe even a Apr 14, 2011 · Just for a reference point, my PUMP gas 10. Combustion Chamber Size-112cc May 1, 2015 · AFR also offers 1/4- and 5/8-inch raised exhaust port configurations that may push the exhaust flow up as high as 300 cfm (nearly doubling the exhaust flow of a stock BBF head). Free shipping on orders of $199. 700" lift and is the ultimate street/race Sep 22, 2017 · Most newer 24 degree factory CNC BBC heads have 2. I'd like to simply state how very nice this set of heads came out and that it was a pleasure to get to meet Tony in person and talk shop. 300" 257 204. But there AFR Heads, 3640 BBC AFR 290 Oval Port Heads, CNC Ported, 112cc, Hydraulic Roller Springs AFR, BB Chevy, Aluminum Heads, Intake Runner 290cc, Combustion Chamber 112cc, 2. These heads feature AFR's These 325cc heads come standard with AFR's trademark 3/4 in. 500 Valve Guide Clearance - Your AFR Heads come with proper guide clearance (. Aug 23, 2020 · ANY head I buy gets disassembled, checked for runout, etc, checked on a flow bench and I expect to do a little port matching. The Dart 335 cnc pro-1's work very good as well. Sep 7, 2023 · AFAIK the 300 is just a bigger version of the 265 and 290. engines. Legal for 1994 and older emissions controlled vehicles under CARB EO #D-250-2. 050 - 40/34 =====43. and for a street / strip engine around a 510 cube, they should be perfect, and engine should last AFR 300cc BBC Magnum Competition Heads . Wondering if the 290cc will be worth the money for a street car besides bragging about hp. Cam is on a 112lsa. There are four variants of the 300 cc Bullitt heads to accommodate 75 cc or 85 cc combustion chambers and solid or hydraulic roller cams. If you’ve got the displacement AFR’s head can feed it with an intake port that flirts with 440 CFM at a usable lift-point, and enough complimenting Sep 16, 2010 · As title states, is the AFR 265 head too small for a pure 100% street grunt motor? My idea for this motor would be: AFR 265 496 ~10:1-10. I love the AFR heads too for the quality. They're recommended for radical street/strip, Pro Street, or racing applications on engines up to 572 cu. 59@111 mph. 500. The first thing GM did when they went to the rect port was raise the floor of the port. 120" thick-wall pushrods. A small well shaped port is better than a huge port that does not have a good shape. Hot, nasty badass speed. It's pure marketing. 050 lift and at least 10. Thanks, Bill Find AFR 345cc Magnum BBC Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! If huge horsepower is what you're searching for, then AFR 345cc Magnum BBC cylinder heads will certainly deliver. Save Share 540 BBC + 15psi Boost via Single Garrett GTX Stock looking, and Oct 8, 2008 · if you think the 265cc AFR BBC heads perk up an engine, you have to try the 300cc AFR versions, I've read more than a few dyno tests showing the results are very noticeably favoring the marginally larger port size especially if matched to a roller cam with at least 245 degrees of intake duration at . It comes with a 2. Just to put it into perspective its 2700. 625 Springs . 800 Valve Guide Clearance - Your AFR Heads come with proper guide clearance (. 250" or 2. This budget friendly head is perfect for your 509 to 540 Cubic Inch operating below 6500 RPM. These oval port competition packages are available with hydraulic or Aug 27, 2008 · 305cc BBC as cast Aluminum Cylinder Head Flow Chart 305cc BBC CNC Chamber Aluminum Cylinder Head Flow Chart *69 SS 502 EFI /224-228* HR/9. $20 Off $250 / $40 Off $500 / $80 Off $1,000 - Use Promo Code: GETREADY Mar 5, 2013 · For our oval-port big-block build, we chose a set of AFR 300 Magnum heads. They seem to be the ultimate for flow vs port size on the medium power range street AFR BBC 345cc cylinder heads will work best with camshafts around the . 500" 370 282. Shop Cylinder Heads . 200. Figuring on Jan 8, 2013 · '67 Chevelle Malibu, Catalina Blue, 540 inch Rat, Air Flow Reasearch 290 CNC Heads heads, Custom Hyd Roller, . 1 day ago · AFR 265cc Oval Port Magnum BBC Cylinder Heads. 700 lift, 1050 QF carb 743@5300 and 851@7300 "Don't forget a 505 is just a 496 that use a 4. They boast 100 percent CNC-ported intake, exhaust, and chambers—as well as A356 aluminum casting and high-quality components throughout. dgl ppe ymznsq rjaa pdjvs ldpm tjtqmy sseuxup vxmrb orurs