Best Cam For Afr 165 Heads

Get the best deals on AFR Car & Truck Cylinder Heads & Parts when you shop the largest Air Flow Research 1. Proven performance - used in Ford Performance sealed 347cid race engines and Ford Performance high performance crate engines, a proven winner out of the crate and thousands of laps before rebuild. the pistons are dish style. Cam Bearings; Dodge/Chrysler Main Bearings (165) Products matching "383" Found 197 results AFR CHEVY SBC 383 406 ELIMINATOR HEADS 195cc 65cc FULLY BUILT. and it will get quite a bit more milage. 6 crane rr's, trick flow stage 2 cam, polished typhoon intake, 24lb. Oct 07, 2011 · Hello just installed new set of AFR 165 heads on 93 mustang 302car idles fine but once under load it sputters and has no power. Best 2 Roller Online Chevy 350 Marine Remanufactured Engine 2 Bolt Mail Non-roller Cam. NHRA legends Bill "Grumpy" Jenkins and Warren Johnson both got their power from AFR aluminum heads. does any one know about how much extra hp afr 165 aluminum heads would add to a bone stock 1989 5. 900" intake and 1. 9 can make a huge difference in power. 0 OEM roller block). This particular 406 engine made 604 hp at around 6400 rpm. 0 builders decided against upgrading the cam and/or stroking their engines because they thought they could get 400 easy HP just by using a stock roller cam and just adding AFR 165 heads, 1. 9BAR / 0 ~ 10BAR. The AFR 185 made 448 hp and the TW made 438 peak. AFR websites lists scorpion aluminum roller rockers,and state not to use the comp cams pro magnums. Mine would be roller cam, AFR heads, dual plane intake, small stall, a little gear. AFR 195 Eliminator. 1 n/a, 321 at the wheels, and his first wheel up shot. AFR Mongoose 260cc Rectangle Port Cylinder Heads AFR's Rectangle Port Mongoose cylinder heads are designed to produce unmatched performance gains on the LS engine range. AFR has long been an innovator in custom cylinder head port and combustion chamber design for all-out airflow and improved performance. Oliver or Callies ultra I beam rods. Even the factory MAF has limitations and I'm wanting to upgrade to the new pimpXshift ecu soon. Anything 351ci and under I would run either an AFR 165 head, Trick Flow 170cc twisted wedge, or Edelbrock RPM heads. Since AFR only offers aluminum cylinder heads we had to talk to Dart's Jack McGinnis about the virtues of aluminum versus iron heads. a bigger than 165 head needed for 450hp) but it's my high rpm mentality showing. That's terrific. This set up has been enough for mid 12s in full street trim. 7:1, or transitioning towards that full load AFR. Xtreme Energy Cams™ provide increased torque, vacuum, response, and power while still providing quiet operation of the valve train and the durability required in daily driven vehicles. Next to the AFR 245 heads, the TS heads offered the highest. World's top manufacturer of performance camshafts, lifters, valve springs, rocker arms and related valve train parts for all race and street performance engines. 94″ intake valve in a 305 head will hurt overall air flow, especially under. Find AFR 165cc SBF Renegade 20 Degree Street Heads 1402 and get Free Shipping on Orders Over $99 at Summit Racing! For the ultimate small block Ford street car, consider AFR 165cc SBF Renegade 20 degree street heads. 600" lift springs are the best for any performance application and blah blah blah, kinda. Performance White. Brodix 6 Bolt LS3 Cylinder heads CNC ported by Late Model Engines. LS3 Heads/Cam Package PRC Stage 2. 0598 lift, AFR-185 heads (#1388), Comp Cams Ultra Gold ARC roller rockers 1. Usually the 185's will fit very tightly with a stock cam so if you do decide with the 185's you will defenitley need a custom cam. If you want to make 300+ to the tires easily, use that typhoon intake in conjunction with some AFR 165's or TFS Twisted Wedge heads (used sets can be found easily in the classifieds) and an XE series cam from CompCams. A lot of 289/302/5. the cam actually had a little less lift and duration but dont forget to factor lash. Ok i'm getting my tax money back soon and i was looking into heads and cam. Nov 29, 2011 · Depending on the type of fuel and other factors, you'll normally want an AFR between 10. Car and Truck Parts by Make and Model. Find our selection variety of 427 chevy engine in stock today. 165" hollow stem intake / 1. matter of fact when i had that motor in the camaro it screamed. The debate is. Competition Cams Ultra Rockers with AFR Stud Girdle; AFR 245cc Heads AF-345/250 @. Get the best deals on AFR Car & Truck Cylinder Heads & Parts when you shop the largest Air Flow Research 1. the assembled heads include manley severe duty valves intake 2. June 22, 2012. It lost a little at the very bottom but pulls more than a gear harder now- especially 4K and up. 00 or AFR 14. Im looking for dyno numbers for people running an AFR headed 383 (perferably the 195cc) Im just trying to get an idea what my combo might put out. that particular cam and 1. Getting ready to drop the hammer on some AFR 165 aluminum heads. 10+) LS applications. 0 liter 302 with a well matched cam and long tuned-style intake (GT40/Cobra,. Browse our daily deals for even more savings! Free delivery and free returns on eBay Plus items!. AFR are good heads. Air flow with 1. AIR FLOW RESEARCH. 500 lift over our previous best 205cc runner. s in the mix then comparing them to the 185 isnt fair, even though the 185 stands its ground against the jr. All of our Black Label heads feature. 33; Buy It Now +C $165. Cams 3/8 Pro Magnum rocker arms you. 88 @ 150 MPH at Kwinana Motorplex in WA. Omex have developed a fast road cam for the Duratec which can be fitted without removing the heads. The best way to compare heads is to flow as many heads as you can on the same bench. June 22, 2012. Anyone think I would have trouble selling AFR 165's for $775? I see them on the Corral for $850-$900 all the time. Air flow facts on 305 heads. 600-inch exhaust valves. 0L, ala AFR 165 heads, to the dyno, I played the same mind game on myself. 100" intake valves, but marginally smaller 1. For some reason 320 keeps sticking in my mind as a good target. 020650-2 Bmp Merlin Iii 310119cc Aluminum Heads. The AFR 165 Renegade series cylinder heads feature lightweight 8mm valve stems with 1. Find FORD 5. Find AFR 165cc SBF Renegade 20 Degree Street Heads 1402 and get Free Shipping on Orders Over $99 at Summit Racing! For the ultimate small block Ford street car, consider AFR 165cc SBF Renegade 20 degree street heads. these heads are based of brodix castings and will accept standard 24 degree pistons like the wiesco quick 16 pistons and the diamond comp series pistons. Roller Cam, and AFR Titan Intake Upgrade 3, 350 Engine Specs Short-block 350 Chevy flat-top pistons. lukovich racing engines - short blocks dart/world. 600 Valve JESEL or T&D Rocker Shaft Included. Buy AFR is the best at one thing - connecting our customers with AFR Cylinder Heads. Pump gas 11. For drag racing I also would do the same, for street tuning though, I normally put the main jet in that gives the best afr for a safe run that gives good performance in a wide variety of conditions(one that will work well for hot and cold days, low or high altitude)without having to worry about changing out constantly. have forged pistons with standard relief. called comp cams and they recommended this as this is an hydraulic flat cam. 100" long pushrod works. Brodix CNC ported BB3 Xtra 345 or AFR heads These are some of the best heads on the market for a high HP Small block on a budget. For drag racing I also would do the same, for street tuning though, I normally put the main jet in that gives the best afr for a safe run that gives good performance in a wide variety of conditions(one that will work well for hot and cold days, low or high altitude)without having to worry about changing out constantly. For the ultimate small block Ford street car, you've got to check out Airflow Research's "Renegade Series" 165cc emissions legal aluminum cylinder heads. They feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout, in addition these are the only AFR heads that are compatible with the OEM piston valve relief. Most builders will buy the 180 or 200 bare, port them and use Ferraro valve components. For 355-400 engines especially suited for 4. The AFR 185 made 448 hp and the TW made 438 peak. 165" Intake Valves and 1. Best ET was 8. Intake runner size is 192cc, as cast. Weighs approximately 175 lbs. The numbers are from our in-house flow bench. The data was all given at 28" of water. Prior to this install the car had a stalling problem and still does. This set up has been enough for mid 12s in full street trim. We read lingenfelter's book on SBC for Street. Although AFR’s 205-cc heads are the most competition-proven Gen III/IV heads on the market, the company has recently improved upon them with is new 210-cc V2 castings. Oliver or Callies ultra I beam rods. 02 intake valve. Best 2 Roller Online Chevy 350 Marine Remanufactured Engine 2 Bolt Mail Non-roller Cam. 4BAR / 0 ~ 4. Ford Autolite - $59. The articles began with the August 2003 issue and continued for quite a few issues. I ordered my AFR 165 heads and they should be coming soon. Both alphabetically and from a pure performance standpoint, Air Flow Research (AFR) heads are among the best performing street heads on the market today. Small Port, High Velocity, Emission Legal Torque Monster! AFR's NEW 165cc Renegade Ford cylinder head is a re-engineered version of their already formidable and proven 20° Ford cylinder head. 185" & efficiently handling 7,000rpm out of the box these heads are a serious bolt on gain!. Skip White Performance provides many high performance racing and engine products such as, stroker engines, turn-key engines, cylinder heads and pistons. just curious. Sadly AFR doesn't make a 165 CC head for the Chevy and IMHO 180 is a bit large for 327-331 CID. Also, when the car is on the dyno, pull the air filter off and have someone shine a flashlight down into the secondaries. Huge assortment of Sbc Chevy at a range of costs. 650-lift BTR Stage IV cam, and chambers (and valve spacing) designed for use on big-bore (4. I've read various magazine dyno tests on AFR heads over the years and the 185 heads typically only our perform the 165 heads by a small margin on a 302. The Gen X 260 heads were further decked out with a 2. Several years ago, we met Wes Migletz and his wife, Winny, driving their '62 Corvette on Car Craft's. AFR's 165cc "Street" cylinder heads are the preferred choice over re-worked factory heads. car was sitting for 5 months before adding some stabilizer to the gas just finished the job this past weekend Submitted: 6 years ago. Pit Stop USA sells Airflow Research, AFR, AFR Aluminum Cylinder Heads, Airflow Research Aluminum Cylinder Heads, Airflow Research Intake Manifolds, AFR Eliminator Racing Cylinder Heads, AFR Eliminator Street Cylinder Heads and more. Ported they will go about 25 more horses than this. If you want to make 300+ to the tires easily, use that typhoon intake in conjunction with some AFR 165's or TFS Twisted Wedge heads (used sets can be found easily in the classifieds) and an XE series cam from CompCams. A couple of years ago I did a 383 for Hot Rod magazine, I touched up the heads a very little, and I cannot remember the exact flow numbers, but it did make 615 HP at 6800 RPM, with a pretty big solid roller cam (735 lift)This was the first 195 Eliminator heads in anyones hands. Featuring sbc chevy available for buying here online!. The #1472 cylinder head castings feature AFR's traditional extra thick decks making these heads ideal for mild street/track. 0L, ala AFR 165 heads, to the dyno, I played the same mind game on myself. Industry Quotes. A lot of 289/302/5. - Three angle valve job, hand blending of valve seats. Callies Magnum crank. of timing on 93 octane pump gas because of the compression being so high. The flow for both as-cast and basic ported Dart 215 Platinums is at bottom left on page 85. Usually the 185's will fit very tightly with a stock cam so if you do decide with the 185's you will defenitley need a custom cam. The AFR 165's may add 200 rpms, so maybe a 5200 rpm peak. AFR's 165cc "Street" cylinder heads are the preferred choice over re-worked factory heads. We Currently (8/27/2013) have the entire SBF AFR Head line in STOCK: *Note all NEW style valvetrain on all in stock heads* AFR SBF 165 - 1399, 1402, 1472. and they put that motor in a car and had trouble breaking out of the 13's with it. Skip White Performance provides many high performance racing and engine products such as, stroker engines, turn-key engines, cylinder heads and pistons. Roller Cam 08-000-8-11321. afr makes the finest heads out there if you compare them equally with any competitor. Ported they will go about 25 more horses than this. 4, didn't really change much unless I went crazy with deadtime or VE. I've read various magazine dyno tests on AFR heads over the years and the 185 heads typically only our perform the 165 heads by a small margin on a 302. Anybody use EngineQuest cylinder heads? My cam was 224/230 and with the Iron Rams/Air Gap the best shift point was 6200 RPM. Like any modification, aftermarket heads work best when you make changes so the engine can use them to their full potential. 289, 302, 351W small block Ford engines and all the stroker. It’s a similar story on the exhaust side – the runners measure 102 cc and are compatible with OEM and Fel-Pro 1438 gaskets. The AFR 165 is more like an Edelbrock performer head because of then short runner and small valves. has been satisfied for now and best. 850 COMPLETE WITH HYDRAULIC OR SOLID ROLLER SPRINGS. Oct 07, 2011 · Hello just installed new set of AFR 165 heads on 93 mustang 302car idles fine but once under load it sputters and has no power. Exhaust ports and bolt pattern are raised. Find our selection variety of 427 chevy engine in stock today. Brodix 6 Bolt LS3 Cylinder heads CNC ported by Late Model Engines. Best heads for Windsor 302? - Ford Modifications Website Looking at a mild street application, and best bang for buck. Prior to this install the car had a stalling problem and still does. AFR suggest you upgrade your springs to AFR part #8605, 1. AFR 165 heads, 30lb injectors, GT40 intake, 75mm MAF housing, and cold air intake. 0L, ala AFR 165 heads, to the dyno, I played the same mind game on myself. This is a story about how a hydraulic roller cam and a pair of AFR heads were worth more than 70 hp in a real street-driven small-block Chevy. 0 Cylinder Head Comparison Several years ago, Muscle Mustangs and Fast Fords began extensive testing on the available heads for the 5. The 185's will probly need to have the pistons fly cut. 700, but im just wondering if this is way to much cam for the stock heads, or would i be ok putting this cam in now, and then when i do the swap to the AFR heads i don't have to mess with the cam or anything. AFR 165's for sure. best of 12. Since AFR only offers aluminum cylinder heads we had to talk to Dart's Jack McGinnis about the virtues of aluminum versus iron heads. 0:1 through most of the curve till I max the injector duity cycle out and then it starts leaning out big time up top and gets as far as 12. This will follow the guideline of a 1. 80 shipping. Trick Flow engineers combined the best features of factory GM LS3 and LS7 cylinder heads with Trick Flow's own unique brand of race-winning engineering and technology to create the ultimate square port LS cylinder head for 4. as stated in previous posts, it used to run on 4 squirts with 19lb inj. May 31, 2012 · What is the best roller rocker for a mild street SBC 350. You are spoilt for choice as almost any average rectangular port head would work fine with your combo, it will probably boil down to best value for money. and please 800hp 434 sbf for sale 100%. So these AFR heads really are. I was going to just buy the standard Autolite's but if there are any better ones let me know. some from a 383 build, some from a 434 build, but the clearancing is the same. and my stock heads are the 70cc chamber 1978 style smog. 0X, Patriot, or worked over Iron versions like CNC E7 Power Heads. A vehicle that can get away with a sacrificing some low end and shifting the powerband upward might like AFR 185 heads, trick flows 190cc twisted wedge, or Canfield heads. NHRA legends Bill "Grumpy" Jenkins and Warren Johnson both got their power from AFR aluminum heads. Longer screw in studs will have to be used because of the geometry. For the ultimate 289 or 302ci small block Ford street car, you’ve got to use AFR’s all new 165cc emissions legal aluminum cylinder heads. AFR 165 comp or AFR 185 complete are about $3000. Mar 29, 2008 · I have pretty much decided on a 355 with the best heads I can get. AFR 195 Eliminator. The AFR 185 made 448 hp and the TW made 438 peak. #6 AFR 220cc SBF. Frank's ride is the 4700# 1969 Impala with an iron headed 427. Chapter 1: Introduction, Overview and Summary. It a 363 in a dart sportsmen, 4340 scat crank, H rods and forged pistons. a blown head gasket. The #1472 cylinder head castings feature AFR's traditional extra thick decks making these heads ideal for mild street/track. No other long runner EFI manifold has shown the kind of average HP and TQ numbers which that "old" unit has delivered. What is the best roller rocker for a mild street SBC 350. 31:1 383 SBC combo at 3610 lbs ran a best of [email protected] + MPH with a converter that was about 1500 RPM too tight (4000-4200 flash stall). Those premium AFR heads and the Comp Cams 'Extreme Energy' camshaft will have your heart pounding even before you engage the clutch. 500-lift flow numbers. My best effort to date was a 244 at 0. Diamond orJE pro pistons + Total seal rings. 650 lift assembled your choice of 4 or 6 bolt heads Regular price $ 2,661. Ported GT40's or GT40P's will get you there but they are still iron heads and you still have to get them ported (added expense). 0 shifter, CAI, 190 fuel pump, 3. 72 rocker combo would work even better with any head better than stock. Don't forget to check out our social media feed for even more street machines and weekend warriors while staying up to date with AFR events, news and product updates. Category: Ford. [email protected] with aftermarket intake, carb, and iron Windsor Jr. I have pretty much decided on a 355 with the best heads I can get. and they put that motor in a car and had trouble breaking out of the 13's with it. Engine masters had a set on a 408W with a super small cam and made 515 TQ at 3900 rpm and 471HP at 5400 rpm. A custom cam will gain the most hp for sure. Reluctantly I have decided to go with AFR 165 heads (58cc) for my LX build up. Stock intake/exhaust ports 1. ON NO ACCOUNT use these settings before the maximum advance on the distributor has been correctly limited. AFR 165's or other heads with cam and stock induction I was just wondering if anyone had tried putting AFR 165's or other heads on a stock 302 HO with a cam and keeping the stock induction. Weighs approximately 175 lbs. sbc 406 and f2 procharger - truestreetcars. The Gen X 260 heads were further decked out with a 2. The TS heads combined a 2. Unlike some aftermarket heads, AFR’s performance cylinder heads (CARB EO #250-3) fit all your stock components; no special parts are required!. The car currently has a rebuilt block, E 303 cam. 0 shifter, CAI, 190 fuel pump, 3. Oct 07, 2011 · Hello just installed new set of AFR 165 heads on 93 mustang 302car idles fine but once under load it sputters and has no power. 0L/302 Airflow Research (AFR) Cylinder Heads and get Free Shipping on Orders Over $99 at Summit Racing!. Compare prices of Egr and other comparable products. thinking of an upgrade in camshaft from an comp 256h to a comp with. Sadly AFR doesn't make a 165 CC head for the Chevy and IMHO 180 is a bit large for 327-331 CID. Looking at AFR 165 Heads and Cobra or other similar EFI intake. 0L, ala AFR 165 heads, to the dyno, I played the same mind game on myself. With a full CNC rubdown, monster 2. This is a story about how a hydraulic roller cam and a pair of AFR heads were worth more than 70 hp in a real street-driven small-block Chevy. i sold my eddies on ebay and kept my x heads because the x head flowed way more. Designed for bores from 4. Custom comp Roller cam + Crower SD offset tappets. The car is then tested on a chassis dyno. Cylinder heads either deliver the goods or not. com (link) QUICK OVERVIEW LS3 Style Cylinder Heads (Pair) Available Bare or Complete The Assembled Options are for a Hydraulic Cam Set Up - Click Here for Mechanical Cam Options LS3 Exhaust port locations and bolt pattern 2. AFR suggests you upgrade your springs to AFR. November 6, 2013. We always have over 1000 rebuilt and new heads in stock and ready to ship. from 4000rpm on up (approx. AFR 165 and off the shelf cam combos? but your best bet on a daily driver combo (your cam will be. My original plan was to go with AFR 185's, Comp Cams XE282HR (232/240 duration at 0. I don't think the air flow through the heads is the issue. They feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout, in addition these are the only AFR heads that are compatible with the OEM piston valve relief. AFR 165 comp or AFR 185 complete are about $3000. a bitchy custom cam, dude on this forums running him on a 94 or 95 and made less than my e cam afr 165 car, and his cam was custom. Very torquey. you'd have to look at the whole lineup, you cant just pull out a set of yates and say "look, these smoke the afr 165's!". Our largest and highest flowing head for the small block ford is the best in-line head money can buy. AFR - Renegade SBF High Performance Cylinder Heads. LS3 Heads/Cam Package PRC Stage 2. Dart Machinery, LTD. OK was able to see your cam specs, that is a very mild cam, if you go with the AFR heads you would probably be best off with the 165's IMHO. Just curious if anyone was currently running these heads and how you like them. Exhaust will be long tube headers probably 1 3/4 with dual exhaust without cat. The BR 3 series shares all of the legendary BRODIX features including easily repairable A-356 virgin aluminum alloy and the strongest deck surface in the industry. Would make the head swap much easier down the road once the engine is in the truck. What is your opinion on the 180 vs 195 for a 355 small block. Mar 26, 2012 · Test 4: Stock vs. after install of heads did a dyno run and not happy with the results. 5 L92 Cylinder Heads, Camaro/Firebird 98-02, GTO 04-06 NOTE: THESE ARE SQUARE PORT HEADS MUST USE SQUARE PORT INTAKE MANIFOLD Precision Race Components L92/LS3 64-72cc Stage 2. AFR 205 Heads - High RPM or power adder 331-347 strokers, 351-427 strokers looking for great torque and efficiency. The rec-port LS7 heads offered some serious peak flow numbers, checking in with 393 cfm at. If you are using Comp. Re: Best cam for AFR 165 Heads « Reply #13 on: December 16, 2009, 06:02:36 pm » yes joel it might have been $1200 - $1300, but i was an idiot and fell into the purchased upgrades because I bought them from AFR direct. Would make the head swap much easier down the road once the engine is in the truck. Dart has built its reputation on the racetrack, but Jack says that about 30 percent of Darts business is the street cylinder head market. ARP is adamant about using a special moly lube or ARP thread sealer for use with their stud packages. Cylinder Head Flow Data @ 28 Inches of Water. AFR 210cc RUNNERS 75cc CHAMBERS ELIMINATOR ALUMINUM HEADS. B-cam or E-cam. The AFR 165 302 heads I had. called afr about lack. Thinking that "bigger is better" many people install 1. I ended up using my existing 1 1/2" primary pipes, but port matched best I could to the exhaust ports on the AFR 165 heads. Brodix 6 Bolt LS3 Cylinder heads CNC ported by Late Model Engines. Dart Machinery Joins as Title Sponsor of LightsOut 10 and 11 Warren, Michigan: Dart Machinery, the undisputed leader in high performance engine blocks and cylinder heads, has joined forces with Duck…. currently have an 302,. We read lingenfelter's book on SBC for Street. Free Shipping Continental USA Only. There has been alot of talk about this article on the mustang forums. after install of heads did a dyno run and not happy with the results. Find FORD 5. [email protected] with aftermarket intake, carb, and iron Windsor Jr. In the 1980s AFR loaned its services to GM and NASCAR, pioneering the use of wet flow. inj, vortech 73mm mass air, stock throttle body (for now), 1 5/8th long tube mac headers, tremec tranny with pro 5. 006 tappet lift) with a high lobe lift and 1. That's terrific. if you wanna throw vic. Anyone think I would have trouble selling AFR 165's for $775? I see them on the Corral for $850-$900 all the time. I havd planned on a 228r with a 112LSA TSP cam and was wondering what would be a better head? The AFR is a lot more $$, but i want to do this one time. I have pretty much decided on a 355 with the best heads I can get. as always i love to hear your thoughts. No way - I do the afr on a street tune, do rough timing on the street, and fine tune it all on the dyno. With the AFR 195 heads and same super small cam it made 520 TQ and 484 HP at 5500 rpm. Exhaust will be long tube headers probably 1 3/4 with dual exhaust without cat. This is our best 23 degree small block for a fast street car or drag application. My best effort to date was a 244 at 0. I've read various magazine dyno tests on AFR heads over the years and the 185 heads typically only our perform the 165 heads by a small margin on a 302. These heads feature absolutely massive 2. You’ve come to right place for the best selection of Kawasaki KX Engine & Intake. Some of the heads with large flows and big runners are not going to be good street heads, since they will have slow flow through the runners at street rpm. If you have a bit more money, try a Dart Windsor Jr or an AFR 165. I guessed high (i. 33; Buy It Now +C $165. Drag 434ci 710-730 hp race gas. afr makes the finest heads out there if you compare them equally with any competitor. If replacing the heads and manifolds, may as well do a decent cam, the original is about 444 in lift and around 266 total duration. 99 Ls1 Ls6 Lsx Gm V8 Conversion Swap Headers Exhaust Manifolds Stainless Steel T304. Airflow Research 195 Eliminator Heads, Comp Hyd. Eliminator 23° LT1 Race Cylinder Heads by AFR®. 498 duration/lift, Edelbrock Water Pump, MSD Distributor, MSD 6A Ignition box, Flex-Lite Fan, Mustang Shorty Headers, Dual Flowmaster, C4 Transmission, 3. Reluctantly I have decided to go with AFR 165 heads (58cc) for my LX build up. The steel head casting number is 3998993. Designed to provide a. in 1996, an lt4 was available in the corvette. This is a story about how a hydraulic roller cam and a pair of AFR heads were worth more than 70 hp in a real street-driven small-block Chevy. Both alphabetically and from a pure performance standpoint, Air Flow Research (AFR) heads are among the best performing street heads on the market today. the lt4 also came with a more aggressive cam to enhance the better heads. He said the AFR 165's even outflow the Edelbrock performer rpm's. Well, the fact is, a 1. AFR suggests you upgrade your springs to AFR. does any one know about how much extra hp afr 165 aluminum heads would add to a bone stock 1989 5. i did change cams though to a big. Chapter 1: Introduction, Overview and Summary. 500 of an inch and above mean nothing to you. Proven LS Horsepower. AFR 165 heads, 30lb injectors, GT40 intake, 75mm MAF housing, and cold air intake. 100" intake valves, but marginally smaller 1. I think the AFR 165's would be benificial if you plan on a bigger cam, more comp, and want to shoot for 300+RWHP and they won't be overkill at all. called afr about lack. They have new keepers, EGR filled for delete, new retainers, and new springs for a roller or regular hydraulic cam. Also, when the car is on the dyno, pull the air filter off and have someone shine a flashlight down into the secondaries. 900" intake and 1. For drag racing I also would do the same, for street tuning though, I normally put the main jet in that gives the best afr for a safe run that gives good performance in a wide variety of conditions(one that will work well for hot and cold days, low or high altitude)without having to worry about changing out constantly.