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Chevrolet - GM CAMSHAFTS | |
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These are mostly the camshafts that are shown in the GMPP catalog. If you are looking for one of the hundreds of other GM camshafts, call us on our toll free order line. Chevrolet also carries a large number of Aftermarket company camshafts. This page is being worked on and is replacing the old obsolete price list page. Not all prices are in the Price Search yet and there are a lot more parts to add to this. This is to provide our customers with more information on parts and make obtaining list of prices for specific parts much easier. Type the Key below into the Price & Parts search for a list of camshaft prices currently there. Key - gmcamshaft |
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| GM and Chevrolet part prices are in the Price & Parts search. Enter a Key, part number, GM, SC, or a key word, like 502, into the Price & Parts search. Use GM for a list of both GM and GMPP parts and SC for a list of all Chevrolet parts. Aftermarket company prices are on downloadable Price Sheets or on their pages. The Page Search is for searching the pages of our Web site. More information on this is on our help page. |
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CAMSHAFT NAVIGATION | |
| Camshafts Main Page | LT4 Camshaft Specs | ZZ4 Camshaft Pictures |
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IMPORTANT INFORMATION | |
| A distributor with a melonized distributor gear MUST be used on all crate engines with steel camshafts or engine damage will occur. If you are unsure if your distributor has a hardened gear, you need to replace it with one that is hardened. It is recommended that you replace the distributor gear with a new one when installing a new camshaft anyway since they wear match to each other. A hardened distributor gear will work with a non-steel camshaft, but not the other way around. For the GMPP P/N 93440806 distributor, you can use melonized distributor gear part number 10456413. This a rule of thumb or a not very complicated guideline for people to use to help them in determining what to do about the camshaft and distributor gear situation. So it's not going to cover every possible situation, but will cover 98% or more. 1) There are three main core types of camshafts, Steel, Iron Core, and Hardened Iron core. A steel camshaft will be smooth and shiny between the lobes and machined areas and also will have numbers stamped instead of cast into it. Iron Core and Hardened Iron core camshafts will a darker cast iron look to the metal between the lobes and machined areas. 2) All Roller camshafts are either Hardened Iron core or Steel camshafts which require a hardened distributor gear. 3) All Iron Core camshafts can use a non-hardened distributor gear. 4) All distributors made now come with a hardened gear unless they specifically state otherwise. 5) A bronze or brass gear is not strong enough to hold up to Steel or Hardened Iron core camshafts for any extended time and should be checked often for wear. The more and harder the vehicle is driven the more often it should be checked. On a road racer, this would be checked or scheduled to be replaced after every race, for instance. 6) GM fuel injection systems use a distributor with a different diameter shaft then a distributor for a carbureted engine. Therefore you must make sure you are getting the right gear for your application. The best way to do this is to contact your dealer and have them look up the correct one for you. All replacement distributor gears will be hardened so you don’t have to worry about this if you buy a new replacement gear from GM. 7) All hardened or melonized distributor gears will work with any of the three main core types of camshafts. This is why all GM replacement distributor gears and all new distributors come with a hardened gear. 8) If you install a new camshaft, you should also replace the distributor gear. 9) Since it’s not practical to replace the camshaft when you install a new distributor or distributor gear while keeping the existing camshaft, it would be a good idea to check the distributor gear wear from time to time just to make sure there aren’t any problems developing and the camshaft gear should be checked that it is in good condition prior to the installation of the new gear or distributor with a new gear. So, to make a long story short, the best rule of thumb is to replace the distributor gear with a new hardened distributor gear every time you replace your existing camshaft with another one (new or not) and that the replacement distributor gear be the one that your GM dealer says is the correct replacement gear for your distributor, if just replacing the gear. For those that have aftermarket distributors (non-GM), you will have to use the correct replacement distributor gear that the manufacturer of that distributor says to use for your distributor. This is due to different shaft sizes being use by manufacturers for their distributors. |
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GMPP SBC CAMSHAFTS | |
| P/N | Description | Link |
| 03863151 | L-79 350HP, 327 Hydraulic Flat Tappet This hydraulic flat tappet is used on the 65-67 Corvette and Chevy II L-79. It has excellent power and torque (ID# 3863152). The duration at lash point in degrees (intake/exhaust) is 320/320; duration at .050” tappet lift (intake/exhaust) is 221/221 and maximum lift with 1.5:1 rocker ratio (intake/exhaust) is 447/447. Valve lash is zero/zero and lobe centerline is 114 degrees. |
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| 03896962 | L-82 330HP, 350 Hydraulic Flat Tappet This hydraulic flat tappet is used on the 68-81 L-46 and L-82 Corvette. The duration at lash point in degrees (intake/exhaust) is 312/312; duration at .050” tappet lift (intake/exhaust) is 222/222 and maximum lift with 1.5:1 rocker ratio (intake/exhaust) is 450/460. Valve lash is zero/zero and lobe centerline is 114 degrees. |
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| 03965754 | Mechanical Flat Tappet This mechanical flat tappet is a second design racing cam. It is a good short track and racing cam for 350ci and larger V8. Use with spring P/N 330585 (ID#3965751). The duration at lash point in degrees (intake/exhaust) is 318/327; duration at .050” tappet lift (intake/exhaust) is 262/273; and maximum lift with 1.5:1 rocker ratio (intake/exhaust) is 488/509. Valve lash is 024/026 and lobe centerline is 112 degrees. |
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| 03972178 | LT-1 360HP Mechanical Flat Tappet (Discontinued) This mechanical flat tappet is used on the 70-71 Corvette and Camaro LT-1. It is a good all around street mechanical cam (ID#3972182). The duration at lash point in degrees (intake/exhaust) is 300/312; duration at .050" tappet lift (intake/exhaust) is 242/254; and maximum lift with 1.5:1 rocker ratio (intake/exhaust) is 435/455. Valve lash is 024/030 and lobe centerline is 116 degrees. |
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| 10134334 | ZZZ Hydraulic Roller Tappet This hydraulic roller tappet is used on the 5.7-liter H.O. engine assembly for ZZZ through ZZ2 engines. Use with spring P/N 10134358. The duration at lash point in degrees (intake/exhaust) is 336/336; duration at .050” tappet lift (intake/exhaust) is 235/235; and maximum lift with 1.5:1 rocker ratio (intake/exhaust) is 480/480. Valve lash is zero/zero and lobe centerline is 114 degrees. |
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| 10185071 | Hydraulic Roller Tappet (ZZ4 Camshaft) This hydraulic roller tappet is used on the 5.7-liter H.O. 350 ZZ3 & 4 engines. The duration at lash point in degrees (intake/exhaust) is 275/280; duration at .050” tappet lift (intake/exhaust) is 208/221; and maximum lift with 1.5:1 rocker ratio (intake/exhaust) is 474/501. Valve lash is zero/zero and lobe centerline is 112 degrees. |
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| 12353914 | Hydraulic Flat Tappet Camshaft Kit All models of small-block Chevrolet V8 1981-87 with computer and non roller camshaft. Designed for brute low-end torque in full size passenger cars, 2-wheel and 4-wheel drive trucks. Great for standard 267” and 305” and 350” engines that cruise at 1800 and 2600 rpm. Technical Note: These are hydraulic flat tappet camshaft kits. This camshaft is emission legal in all 50 states. The duration at .050” lift (intake/exhaust) is 180/194 degrees, and the valve lift is .378”/.401”. This camshaft kit is designed and manufactured by Crane Cams ®. It contains one camshaft and 16 tappets. |
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| 12353915 | Hydraulic Flat Tappet Camshaft Kit All models of small-block Chevrolet V8 1981-87 with computers and non- roller camshafts except HO 305. Designed for mid-range torque in passenger cars or light and intermediate 2-wheel and 4-wheel drive trucks with factory optional gearing. Good choice for auto. trans. Great for 305” and 350” engines running between 1800 and 2600 rpm. Technical Note: These are hydraulic flat tappets. Emission legal in 50 states. The duration at .050” lift (intake/exhaust) is 194/204 degrees, and the valve lift is .401”/.403”. Lobe centerline is 104. This camshaft kit is designed and manufactured by Crane Cams ®. It contains one camshaft and 16 tappets. |
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| 12353916 | Hydraulic Flat Tappet Camshaft Kit All model small-block Chevrolet V8 1981-87 with computers and non-roller camshafts. Designed for cars with 305” HO and 350" engines that cruise above 2600 rpm, also good for 350” trucks with suitable cruise rpm. Technical Note: These are hydraulic flat tappet camshaft kits. The duration at .050” lift (intake/exhaust) is 204/214 degrees, and the valve lift is .423”/.446”. Lobe centerline is 110. This camshaft kit is emission legal in all 50 states. This camshaft kit is designed and manufactured by Crane Cams ®. It contains one camshaft and 16 tappets. |
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| 12353917 | Hydraulic Flat Tappet Camshaft Kit 8.0 - 9.5 to compression ratio, 2200 - 2600 cruise rpm. Basic rpm range 1500 - 4000, 6500 rpm attainable with proper valve springs and lifters. All model small-block Chevrolet V8 1955-66 California, 1955-68 with federal emissions. All non-emission trucks, and 1966-92 for off-highway applications. Technical Note: These are hydraulic flat tappet camshaft kits. The duration at .050” lift (intake/exhaust) is 204/214 degrees, and the valve lift is .420”/.442”. Lobe centerline is 112. This camshaft kit is designed and manufactured by Crane Cams ®. It contains one camshaft and 16 tappets. |
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| 12353918 | Hydraulic Flat Tappet Camshaft Kit All “Marine” and off-road small-block Chevrolet V8. Compression ratio 8.75 - 10.5 to 1, 2600 - 3000 cruise rpm, basic rpm range 2000 - 4500 rpm, 6500 rpm attainable with proper valve springs and lifters. Technical Note: These are hydraulic flat tappet camshaft kits. The duration at .050” lift (intake/exhaust) is 214/224 degrees, and the valve lift is .442”/.465”. Lobe centerline is 112. This camshaft kit is designed and manufactured by Crane Cams ®. It contains one camshaft and 16 tappets. |
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| 12353923 | Hydraulic Flat Tappet Camshaft Kit All model small-block Chevrolet V8 1955-66 California, 1955-68 with federal emissions. All non-emission trucks, and 1966-92 for off-highway applications. 9.5 - 10.75 - 1 compression ratio 3000 - 3400 cruise rpm. Basic rpm 2200 - 5700, 6500 rpm attainable with proper valve springs and lifters. Technical Note: These are hydraulic flat tappet camshaft kits. The duration at .050” lift (intake/exhaust) is 224/234 degrees, and the valve lift is .465”/.448”. Lobe centerline is 114. This camshaft kit is designed and manufactured by Crane Cams ®. It contains one camshaft and 16 tappets. |
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| 12364050 | Hydraulic Flat Tappet Camshaft Kit Single pattern, blueprinted replacement for factory P/N 3863151 with 350 hp and 327 cu. in. camshaft. Technical Note: Basic rpm range is 2200 - 5200; cruise rpm at 60 mph is 3000 - 3400 and compression ratio is 9.5 - 10.75. The duration at .050” lift (intake/exhaust) is 222/222 degrees, and the valve lift is .447”/.447”. Lobe centerline is 114. This camshaft kit is designed and manufactured by Crane Cams ®. It contains one camshaft and 16 tappets. |
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| 12364051 | Hydraulic Flat Tappet Camshaft Kit Dual pattern, blueprinted replacement for factory P/N 3896929 with 300 hp and 327 cu. in. camshaft. Technical Note: Basic rpm range is 1000 - 3500; cruise rpm at 60 mph is 1600 - 2200 and compression ratio is 7.75 - 8.75. The duration at .050” lift (intake/exhaust) is 195/202 degrees, and the valve lift is .390”/.410”. Lobe centerline is 112. This camshaft kit is designed and manufactured by Crane Cams ®. It contains one camshaft and 16 tappets. |
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| 12364052 | Mechanical Flat Tappet Camshaft Kit Blueprinted replacement for factory P/N 3849346 with 290 hp and 302 cu. in. 228 camshaft, auto with 4000 converter. Technical Note: Basic rpm range is 4000 - 6800; and compression ratio is 11.0 - 12.5. The duration at .050” lift (intake/exhaust) is 254/254 degrees, and the valve lift is .485”/.485”. Lobe centerline is 114. This camshaft kit is designed and manufactured by Crane Cams ®. It contains one camshaft and 16 tappets. |
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| 12364053 | Mechanical Flat Tappet Camshaft Kit Blueprinted replacement for factory P/N 3927140, this is an off road special camshaft, auto with 4000 converter. Mechanical Flat Tappet Camshaft Kit Basic rpm range is 4200 - 7200; and compression ratio is 11.0 - 12.5. The duration at .050” lift (intake/exhaust) is 257/269 degrees, and the valve lift is .493”/.512”. Lobe centerline is 112. This camshaft kit is designed and manufactured by Crane Cams ®. It contains one camshaft and 16 tappets. |
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| 12364054 | Mechanical Flat Tappet Camshaft Kit Blueprinted replacement for factory P/N 3972182 with 330 hp and 350 cu. in. camshaft, auto with 3000 converter. Technical Note: Basic rpm range is 3000 - 6200; and compression ratio is 10.0 - 12.0. The duration at .050” lift (intake/exhaust) is 242/254 degrees, and the valve lift is .459”/.485”. Lobe centerline is 116. This camshaft kit is designed and manufactured by Crane Cams ®. It contains one camshaft and 16 tappets. |
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| 12370845 | Hydraulic Roller Tappet This hydraulic roller design contains eccentric for mechanical fuel pump. It is for off-road use only. The duration at .050” tappet lift (intake/exhaust) is 214”/224”; and maximum lift with 1.5:1 rocker ratio (intake/exhaust) is 488”/509”. Valve lash is zero/zero and lobe centerline is 112 degrees. |
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| 12370846 | Hydraulic Roller Design This hydraulic roller design contains eccentric for mechanical fuel pump. It is for off-road use only. The duration at .050” tappet lift (intake/exhaust) is 222/230; and maximum lift with 1.5:1 rocker ratio (intake/exhaust) is 509/528. Valve lash is zero/zero and lobe centerline is 112 degrees. |
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| 12370847 | Hydraulic Roller Design This hydraulic roller design contains eccentric for mechanical fuel pump. It is for off-road use only. The duration at .050” tappet lift (intake/exhaust) is 234/242; and maximum lift with 1.5:1 rocker ratio (intake/exhaust) is 539/558. Valve lash is zero/zero and lobe centerline is 112 degrees. |
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| 12480002 | Hot Cam Kit (LT4) This off-highway camshaft kit has the major valve train component to convert production LT1 engine for showroom stock racing, or hop up your small block Chevrolet V8 that was originally equipped with a roller tappet camshaft. The 1.6 roller rockers, light weight valve spring caps, special designed valve springs and hot camshaft offers a significant gain in horsepower at a reasonable price. This kit includes the following items: one camshaft P/N 24502586, 16 roller rocker arms kit P/N 12370839, 16 valve springs P/N 12551483, 16 valve caps P/N 10212808, 16 valve keys P/N 24503856, 16 valve spring shims P/N 10212809. Technical Notes: This kit does not include roller tappets. If your engine already has roller lifters, you can use them with this kit, but always check for wear and replace if needed before installing this kit. If you are building an engine from a bare block, you can use the roller lifter kit P/N 12371042. Special Note For ZZ4 Owners: This kit is worth 40HP more when installed in a ZZ4 which will boost the horsepower from 355 to 395, but the ZZ4 comes with the most of the LT4 HOT Cam Kit components already installed. The camshaft and lifters are all that are needed to complete the LT4 Hot Cam conversion on the ZZ4. The ZZ3 and prior versions of the ZZ4 will require the complete kit for the upgrade. Installation Instructions And Cam Card |
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| 12480110 | Camshaft, Gen 3 V8 (LS1) The “Gen 3” V8 (RPO-LS1) engine is used in all 1997 and later Corvettes, and 1998 and later Camaros. This camshaft is designed for ASA racing and has .525” lift on 110° center line. Important Note: Use with “Gen 3” LS1 engines only. |
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| 12523897 | Hydraulic Flat Tappet This hydraulic flat tappet is used on the 83-86 305ci Z-28 and L-69 Camaro. The duration at lash point in degrees (intake/exhaust) is 294/294; duration at .050” tappet lift (intake/exhaust) is 202/206 and maximum lift with 1.5:1 rocker ratio (intake/exhaust) is 403/415. Valve lash is zero/zero and lobe centerline is 115 degrees. |
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| 12551142 | Hydraulic Roller (LT4 Production Cam) This is an LT4 production cam 1996. The duration at .050” tappet lift (intake/exhaust) is 203/210; and maximum lift with 1.6 rocker ratio (intake/exhaust) is 476/480. Valve lash is zero/zero and lobe centerline is 115 degrees. |
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| 12551705 | Hydraulic Roller Tappet This hydraulic roller tappet is used on the 95-97 Corvette and Camaro. The duration at .050” tappet lift (intake/exhaust) is 201/208; and maximum lift with 1.5:1 rocker ratio (intake/exhaust) is 447/459. Valve lash is zero/zero. |
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| 12560950 | LS6 Gen Production Performance Camshaft This camshaft is original equipment in LS6 Vortec engines. It features .525” intake and exhaust lift, 217 degree exhaust duration at .050”, 207 degree intake duration at .050”, and 116 degree lobe centers. Important Note: Use with “Gen 3” LS6 engines only. |
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| 14093643 | Hydraulic Roller Tappet This hydraulic roller tappet is used on the 87 350ci Corvette and IROC-Z Camaro. The duration at lash point in degrees (intake/exhaust) is 294/294; duration at .050” tappet lift (intake/exhaust) is 202/206; and maximum lift with 1.5:1 rocker ratio (intake/exhaust) is 403/415. Valve lash is zero/zero and lobe centerline is 115 degrees. |
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| 14097395 | Hydraulic Roller Design This hydraulic roller design is used on the 383 truck. The duration at lash point in degrees (intake/exhaust) is 288/308; duration at .050” tappet lift (intake/exhaust) is 196/206; and maximum lift with 1.5:1 rocker ratio (intake/exhaust) is 431/451. Valve lash is zero/zero and lobe centerline is 109 degrees. |
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| 24502476 | Hydraulic Flat Tappet (300 HP 350 HO Camshaft) This hydraulic flat tappet is used on the 350-300 and 330 HP special performance engine P/N 12355345, and 12486014. The duration at lash point in degrees (intake/exhaust) is 320/324; duration at .050” tappet lift (intake/exhaust) is 212/222 and maximum lift with 1.5:1 rocker ratio (intake/exhaust) is 435/460. Valve lash is zero/zero and lobe centerline is 112.5 degrees. |
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| 24502586 | Hydraulic Roller (LT4 HOT Cam) This hydraulic roller cam is for service only for all V8 engines with roller camshafts. The duration at lash point in degrees (intake/exhaust) is 279/287; duration at .050” tappet lift (intake/exhaust) is 218/228; and maximum lift with 1.6 rocker ratio (intake/exhaust) is 525/525. Valve lash is zero/zero and lobe centerline is 112 degrees. Technical Notes: The LT4 camshaft P/N 24502586 was designed to be used in a number of different engines. Therefore, the following change may need to be made to allow for correct assembly of the engine: For LT1 and L98 engines 1995 and before, the dowel pin in the end of the camshaft must be pushed in so extension from end of cam is .30+/-.01”, the same as the production part. For 1996 LT1 and LT4 engines, the dowel pin is in the correct position, extending .620" from the end of the camshaft. This camshaft has a fuel pump lobe. Installation Instructions And Cam Card |
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NOTE ON BBC CAMSHAFT LIFTER KITS | |
| These new generation of camshaft kits are designed and manufactured by Crane Cams® for GM Parts Division. All kits contain one (1) camshaft and sixteen (16) tappets (lifters). A camshaft is the “brain” that controls the flow of fuel and air through an engine. The camshaft’s lift, duration, and overlap strongly affect an engine’s idle quality, power curve, and rpm potential. GM Performance Parts offers a wide variety of camshafts for big-block Chevrolets, ranging from low-maintenance hydraulic lifter grinds to full-race mechanical tappet profiles. Many of these cams were originally produced for high-performance engine options; others are intended strictly for off-highway competition. |
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GMPP BBC CAMSHAFTS | |
| P/N | Description | Link |
| 03904362 | Mechanical Flat Tappet This mechanical flat tappet is an 454 LS-6 street mechanical lifter cam. (Use spring P/N 3970627.) The duration at lash point in degrees (intake/exhaust) is 307/298; duration at .050” tappet lift (intake/exhaust) is 242/242; and maximum lift with 1.7:1 rocker ratio (intake/exhaust) is 496/492. Valve lash is .024/.028 and lobe centerline is 114 degrees. (Discontinued) |
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| 03959180 | Mechanical Flat Tappet This mechanical flat tappet is a ZL-1 and LS-7 mechanical lifter competition cam, good in 427-454. (Use spring P/N 3916164.) The duration at lash point in degrees (intake/exhaust) is 327/333; duration at .050” tappet lift (intake/exhaust) is 262/273; and maximum lift with 1.7:1 rocker ratio (intake/exhaust) is 580/620. Valve lash is .024/.026 and lobe centerline is 110 degrees. (Discontinued) |
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| 10185060 | Hydraulic Flat Tappet “454” This hydraulic flat tappet “454” is a good street high-performance and marine cam used in the Gen V 454 H.O. engine P/N 10185058. (Advanced five degrees; use spring P/N 3970627.) The duration at lash point in degrees (intake/exhaust) is 328/324; duration at .050” tappet lift (intake/exhaust) is 220/220; and maximum lift with 1.7:1 rocker ratio (intake/exhaust) is 500/500. Valve lash is zero/zero and lobe centerline is 115 degrees. |
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| 12353920 | Hydraulic Flat Tappet Camshaft & Lifter Kit All models big-block Chevrolet V8 1965-66 California, 1965-68 with federal emissions. All non-emissions truck and all 1966-92 for off-highway applications. This is also an excellent marine cam. Good idle, daily performance usage, mild bracket race, 9.5 - 10.75 - 1 compression ratio 3000 - 3400 cruise rpm. Basic rpm 2200 - 5700, 6500 rpm attainable with proper valve springs and lifters. Technical Notes: These are hydraulic flat tappet camshaft kits. The duration at .050” lift (intake/exhaust) is 228°/238°; valve lift is .540”/.540”; lobe centerline is 114. |
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| 12353921 | Hydraulic Flat Tappet Camshaft & Lifter Kit All model big-block Chevrolet V8 1965-66 California, 1965-68 with federal emissions. All non-emissions trucks, and all 1966-92 for off-highway applications. RPM range 2000 - 5500 rpm. Smooth idle, daily usage, off road, towing, economy, mild turbo-charged 8.0 - 9.5 to compression ratio, 2200 - 2600 cruise rpm. Basic rpm range 1500 - 4000, 6500 rpm attainable with proper valve springs and lifters. Also ideal for jet drive or stern drive boat applications. Technical Notes: These are hydraulic flat tappet camshaft kits. The duration at .050 lift (intake/exhaust) is 208°/218°; valve lift is .475”/.500”; lobe centerline is 112. |
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| 12353922 | Hydraulic Flat Tappet Camshaft & Lifter Kit All “Marine” and off-highway big-block Chevrolet V8 396-427-454-502. (Same as PL13PO818). Good idle, daily usage, and off road, towing, performance and fuel efficiency, compression ratio 8.75 - 10.5 to 1, 2600 - 3000 cruise rpm, basic rpm range 2000 - 4500 rpm, 6500 rpm attainable with proper valve springs and lifters. Technical Notes: These are hydraulic flat tappet camshaft kits. The duration at .050” lift (intake/exhaust) is 218°/228°; valve lift is 500”/.500”; lobe centerline is 114. |
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| 12361314 | Camshaft & Lifter Kit - “Truck Torque Design” This kit is for all big-block V8 engines. It is engineered to boost horsepower and torque from low rpm through the entire engine range. It enhances low-speed performance for all truck applications from normal driving to towing and hauling heavy loads. Suitable for computer controlled Mark IV and Mark V engines. Technical Notes: Advertised duration (intake/exhaust) is 202°/210°, and maximum lift is .468”/.485”; lobe centerline is 110. |
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| 12361316 | SS 454 Performance Camshaft & Lifter Kit Designed especially for the SS 454 Chevrolet pickup truck with computer (1990-93), this camshaft gives increased mid range and top end performance. Technical Notes: Advertised duration (intake/exhaust) is 210°/218° and maximum lift is .485”/.490”; lobe centerline is 115. It may have a slight decrease below 2,200 rpm, which actually helps the traction and overall performance. |
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| 12364055 | Camshaft Hydraulic Lifter Kit Factory Performance Dual pattern, blueprinted replacement for factory (P/N 3883986) 350 H.P. 396 cubic inch camshaft. Technical Notes: Basic RPM range is 1500-3800; cruse RPM at 60 MPH is 2600-3000; compression ratio 8.75 to 10.0. The duration at .050” lift (intake/exhaust) is 214°/218°; valve lift is .461”/.480”; lobe centerline is 115. |
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| 12364057 | Camshaft Mechanical Lifter Kit Factory Performance Single pattern, blueprinted replacement for factory (P/N 3863143) 375 H.P. 396 cubic inch camshaft. Technical Notes: Basic RPM range is 3200-6500; compression ratio 10.5 to 11.5. The duration at .050” lift (intake/exhaust) is 242°/242°; valve lift is .520”/.520”; lobe centerline is 114. |
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| 12364058 | Camshaft Mechanical Lifter Kit Factory Performance Dual pattern, blueprinted replacement for factory (P/N 3925535) 435 H.P. 427 cubic inch early L-88 camshaft. Technical Notes: Basic RPM range is 4400-7000; compression ratio 11.5 to 12.0. The duration at .050” lift (intake/exhaust) is 264°/269°; valve lift is .560”/.580”; lobe centerline is 112. |
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| 12366543 | Steel Hydraulic Roller This steel roller is for 502/502 special engines. (Must use distributor gear P/N 10456413.) The duration at .050” tappet lift (intake/exhaust) is 224/234; and maximum lift with 1.7:1 rocker ratio (intake/exhaust) is 527/544. Valve lash is zero/zero and lobe centerline is 110 degrees. |
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| 14096209 | Hydraulic Flat Tappet “502” This hydraulic flat tappet “502” is a good street high-performance and marine cam used in the Gen V 502 H.O. engine P/N 10185085. (Use spring P/N 3970627.) The duration at lash point in degrees (intake/exhaust) is 328/324; duration at .050” tappet lift (intake/exhaust) is 220/220; and maximum lift with 1.7:1 rocker ratio (intake/exhaust) is 500/500. Valve lash is zero/zero and lobe centerline is 115 degrees. |
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| 24502611 | Steel Hydraulic Roller This steel roller is for the 502 and 454 H.O. engines. (Must use distributor gear P/N 10456413.) The duration at .050” tappet lift (intake/exhaust) is 211/230; and maximum lift with 1.7:1 rocker ratio (intake/exhaust) is 510/540. Valve lash is zero/zero and lobe centerline is 112 degrees. |
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GMPP BBC CAMSHAFT PARTS | |
| P/N | Description | Link |
| 12364086 | Cam Button Spacer These cam spacer buttons are for all Big- Block (396,427,454, and 502) 1965 to 1995 Chevrolet engines. Engines without a cam thrust plate must use a cam button spacer when using a roller lifter camshaft to limit lateral movement. The solid aluminum button is priced for the budget minded racer. |
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