Page 167 of GM Performance Parts 2006 Catalog by GM Parts Direct

165 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 I: .492 112 Service only. For all V-8 engines with roller cams. See note below chart. roller (LT4 E: 228 E: .492 hot cam) 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 ABOUTTHE 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-blocks 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-blocks. flat tappet E: 224 E: .465 12353923 Hydraulic I: 224 I: .465 114 For 9.5-10.75 C.R. medium rpm small-blocks 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-blocks. 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-blocks. 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-blocks. 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-blocks. 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-blocks. 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

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