Chevy Small block V8
CAMSHAFTS SMALL- BLOCK CAMSHAFTS
Part Description Duration Maximum Lobe Technical Notes Number @ .050" Lift (in) Centerline Lift (deg) w/1.5 rocker (deg)
3896962 Hydraulic I: 222 I: .450 114 Used in 290 hp 350 crate engine. flat tappet E: 222 E: .460
24502476 Hydraulic I: 212 I: .435 112.5 Used in 350/300 hp and 350/330 hp special performance engines. flat tappet E: 222 E: .460
14097395
Hydraulic I: 196 I: .431 109 For the HT383 truck engine with 1.5 rockers. roller design E: 206 E: .451
10185071 Hydraulic I: 208 I: .474 112 For ZZ3 350 HO engine; use with spring P/N 10134358. roller tappet E: 221 E: .510
12551705 Hydraulic I: 201 I: .447 N/A Used in 1995–1997 Corvette and Camaro LT1 engines. roller tappet E: 208 E: .459
12551142 Hydraulic LT4 I: 203 "1.6 rocker" 115 1996 LT4 production. (1.6 rocker) production E: 210 I: .476 cam E: .480
24502586 Hydraulic I: 218 "1.6 rocker" 112 Service only. For all V-8 engines with roller cams. See note below chart. (1.6 rocker) roller (LT4 E: 228 I: .492 hot cam) E: .492
24502586 Hydraulic I: 218 "1.6 rocker" 112 Service only. For all V-8 engines with roller cams. See note below chart. (1.6 rocker) roller (LT4 E: 228 I: .525 hot cam) E: .525
12480002 Hydraulic I: 218 "1.6 rocker" 112 Same as P/N 24502586 except this is a kit that includes aluminum (1.6 rocker) roller (LT4 E: 228 I: .525 rockers, valve springs, and retainers. hot cam kit) E: .525 12370845 Hydraulic I: 214 I: .488 112 Off-highway use only. Contains eccentric for mechanical fuel pump. roller design E: 224 E: .509
12370846 Hydraulic I: 222 I: .509 112 Off-highway use only. Contains eccentric for mechanical fuel pump. roller design E: 230 E: .528
12370847 Hydraulic I: 234 I: .539 112 Off-highway use only. Contains eccentric for mechanical fuel pump. roller design E: 242 E: .558 ABOUT THE LT4 CAMSHAFT: The LT4 camshaft P/N 24502586 was designed to be used in many different engines. The following change may be necessary for correct engine assembly: For LT1 and L98 engines (pre-1996) the dowel pin in the end of the camshaft must be pushed in so extension from end of cam is .30"+/- .01". For 1996 LT1 and LT4 engines, the dowel pin is in the correct position extending .620" from the end of the camshaft. This cam has a fuel pump lobe. SMALL- BLOCK CAMSHAFT & LIFTER KITS — INCLUDES CAMSHAFT AND 16 LIFTERS Part Description Duration Maximum Lobe Technical Notes Number @ .050" Lift (in) Centerline Lift (deg) (deg)
12353915 Hydraulic I: 194 I: .401 104 Use with 1981–87 engines with computers, flat tappet and non-roller cam, flat tappet E: 204 E: .423 except 305 HO; good mid-range torque
12353917 Hydraulic I: 204 I: .420 112 For 8.0-9.5 C.R. low rpm small-block including ’55–66 CA emissions, flat tappet E: 214 E: .442 ‘55–’68 Fed emissions, ’66–92 off-highway, and all non-emissions trucks
12353918 Hydraulic I: 214 I: .442 112 For 8.75-10.5 C.R. low-medium rpm off-road and marine small-block flat tappet E: 224 E: .465
12353923 Hydraulic I: 224 I: .465 114 For 9.5-10.75 C.R. medium rpm small-block including ’55–66 CA emissions, flat tappet E: 234 E: .448 ’55–68 Fed emissions,’66–92 off-highway, and all non-emissions trucks
12364050 Hydraulic I: 222 I: .447 114 For 9.5-10.75 C.R. medium rpm small-block. Single pattern, blueprinted flat tappet E: 222 E: .447 replacement for factory P/N 3863151 w/350 hp and 327-ci camshaft.
12364051 Hydraulic I: 195 I: .390 112 For 7.75-8.75 C.R. low rpm small-block. Dual pattern, blueprinted flat tappet E: 202 E: .410 replacement for factory P/N 3896929 w/300 hp and 327 ci camshaft.
12364052 Mechanical I: 254 I: .485 114 For 11.0-12.5 C.R. medium/high rpm small-block. Blueprinted replacement flat tappet E: 254 E: .485 for factory P/N 3849346 w/290 hp and 302-ci camshaft. Auto needs 4000 converter.
12364053 Mechanical I: 257 I: .493 112 For 11.0-12.5 C.R. high rpm off-road small-block. Blueprinted replacement flat tappet E: 269 E: .512 for factory P/N 3927140. Auto needs 4000 rpm stall converter.
12364054 Mechanical I: 242 I: .459 116 For 10.0-12.0 C.R. medium/high rpm small-block. Blueprinted replacement for factory flat tappet E: 254 E: .485 P/N 3972182 w/330 hp and 350 camshaft. Auto needs 3000 rpm stall converter. CAMSHAFTS
A great camshaft delivers power and easy drivability and that’s exactly what you get with GMPP’s factory-engineered cams. Extensive research and development, followed by precise manufacturing standards, are behind every one of our camshafts. Our extensive array of cams includes the best one for your GM engine. Note:
IMPORTANT! Distributor with melonized steel gear MUST be used with steel camshafts or engine damage can occur. A. 12480002
350 Hot Cam Kit
Off-highway kit converts production LT1 engine for showroom stock racing Improves small-block originally equipped with roller tappet camshaft
Significant horsepower gains
Includes camshaft, 16 roller rocker arms, 16 valve springs, 16 valve spring caps, 16 valve spring keys, and 16 valve spring shims
Lifters are not included
This kit includes the following items:
24502586 1 Camshaft
12370839 16 Roller Rocker Arms Kit
12551483 16 Valve Springs
10212808 16 Valve Caps
24503856 16 Valve Keys 10212809 16 Valve Spring Shims 12499229
5.7L Vortec Camshaft Install Kit (not shown)
Convenient, inclusive kit
Includes two water pump gaskets, intake manifold gasket set, two valve cover gaskets, a distributor gasket and a front crankshaft seal assembly B. 10088128
Camshaft Retainer
First design with 3.62" bolt center as used on ZZZ, ZZ1 and ZZ2 engines 10168501
Camshaft Retainer (not shown)
Second design with 3.294" bolt center as used on ZZ3 and ZZ4 engines 12370843
Camshaft Bearings (not shown)
Cam bearing kit made from F830 bearing material with 2.00" O.D. and 1.867" I.D.
Fits CNC-machined iron block: P/N 24502501, P/N 24502503, P/N 24502525, and aluminum block (after June 1996) P/N 10134400 and P/N 10185075 C. 24502459
Camshaft Rear Cover Kit
Cover and o-ring gasket for sealing rear camshaft hole on all "CNC" aluminum and iron block
Includes bolts D. 12364085
Cam Button Spacer
Solid aluminum button limits lateral movement of roller lifter camshafts
Designed for 1955–1986 283–400 small-block without a cam thrust plate | 
