Corvette Camshafts

Year, CID, Type, Part No.
Horsepower rating
Intake opens BTDC Intake closes ABDC Intake Duration Intake Lobe Center Intake Lift Exhaust open BBDC Exhaust close ATDC Exhaust Duration Exhaust Lobe Center Exhaust lift Distance between centers Overlap
Small block Camshafts
’55-56 265 p/n
Std Eng. 21:30 63:30 (265) (111) .4043″ 62:30 23:30 (266) (70:30) .4136″ (139:30) (45)
’56 265 mech p/n 3736097
hp 35 72 287 (109) .4043″ 76 31 287 (68) .4136″ (139) 66
’57-61 283 hyd p/n
hp 12:30 57:30 250 (112:30) .3987″ 54:30 15:30 250 (70:30) .3987″ (138) 28
57-61 283, 62-63 327 mech p/n 3736097
283hp, 290hp, 315hp,
340hp, 360hp
35 72 287 (109) .393″ 76 31 287 (68) .399″ (139) 66
@.008″ 66 12 258
’62-67 327 hyd p/n 3732798
250hp, 300hp 32:30 87:30 300 (118) .398″ 74:30 45:30 300 (76) .398″ (138) 78
@.008″ 24 54 258 (105) .398″ 62 25 267 (72) .398″ (147) (49)
’64-65 327 mech L-84 p/n 3849346 c/n 3849347
365hp, 375hp 60:50 105:23 346:13 (112) .485″ 108:50 57:23 346:13 (64) .485″ (132) 118:13
’65-67 327 L79 hyd p/n 3863152
350hp 54 108 342 (117) .447″ 102 60 342 (69) .447″ (132) 114
’68 327, ’69-up 350 hyd p/n 3663152
’68-70 300hp, ’71-72 270hp, 73-up L48 28 72 280 (112) .390″ 78 30 288 (66) .410″ (134) 58
’68 327 L79 hyd p/n 3863151 c/n 3863152
350hp 40 86 306 (113) .447″ 88 38 306 (65) .447″ (134) 78
@.008″ 31 73 284 (111) .447″ 79 25 286 (63) .447″ (132) (56)
@.050″ per Chevy (5) 221 .447″ 221 .447″ 114
69-77 350 hyd p/n 3896962 c/n 3896964
69-70 350hp, 73-81 L82 52 114 346 (121) .450″ 98 62 340 (72) .460″ (131) 114
@.008″ 31 73 284 (111) .450″ 77 21 278 (63) .460″ (132) (52)
@.050″ per Chevy (5) 222 222 114
70-72 350 LT1 mech p/n 3972178
70 370hp, 71-72 330hp 42:40 94:20 317 (116) .458″ 112:50 53:23 346:13 (60) .485″ (125) 96:3
@.008″ 25 75 280 (115) .438″ 95 33 308 (59) .455″ (124) (58)
lash .020″ .030″
@.050 per Chevy (5) 242 .024″ 254 .030″ 116
87 Corvette Hyd. Roller 294 .403″ 294 .415″ 115
@.050 per Chevy (5) 202 206
1995-97 LT1 p/n 12551705
@.050 per Chevy (5) 201 .447″ 208 .459″
LT4 Corvette, Hyd. Roller p/n 12551142
@.050 per Chevy (5) 203 .476″ 210 .480″ 115
LT4 Corvette Hyd. Roller “Hot Cam” p/n 24502586 279 .525″ 287 .525″ 112
@.050 per Chevy (5) 218 228
LS1 Corvette Hyd. Roller, p/n 12480110 286 .525″ 300 .525 110
@.050 per Chevy (5) 226 236
LS1 Corvette Hyd. Roller, p/n 12480110 279 .525″ 287 .525″ 112
@.050 per Chevy (5) 219 228
Big block Camshafts
396-454 hyd p/n 3874872
L35, L66, LS1, LS3 @.008″ 10 54 244 (112) .398″ 79 25 284 (63) .430″ (131) (35)
427 hyd p/n 3883986 or 3904364
L34, L36, L68, LS5 56 114 350 (119) .461″ 110 62 352 (66) .461″ [.480″] (127) 118
@.008 20 68 268 (114) .461″ 74 20 274 (63) .461″ (129) (40)
454 Marine High perf Hyd 6272989
@.008″ 56 120 356 (122) .500″ 107 65 352 (69) .500″ (127) 121
65-71 High Perf Mech 396 – 454 p/n 3863143 (c/n 3863144)
L71, L72, L78, L89 54 102 336 (114) .5197″ 102 54 336 (66) .5197″ (132) 108
@.015″ 40 86 306 (113) .500″ 88 38 306 (65) .500″ (132) (78)
LS6 p/n 3904366 @.015″ 44 92 316 (114) .500″ 86 36 302 (65) .500″ (131) 80
L88 Mech. p/n 3925535 or 3928911 (c/n 3925536)
427/430 hp L88 62 115 354 (357) (117) .540″ 108 72 360 (72) .560″ (136) 133 (134)
@ .015″ 48 98 326 (115) .540″ 96 58 334 (71) .560″ (136) (106)
’67 427 Gear Drive p/n 3925533 (c/n 3925534)
Same as L88 p/n 3925535
427-454 Mech. p/n 3959180 (c/n 3959181)
ZL1, LS7 62 105 347 (112) .560″ 106 73 359 (74) .600″ (142) 135
@ .015″ 50 92 322 (111) .560″ 94 60 334 (73) .600″ (142) (110)
427-454 Mech. p/n 340282 (c/n 340283)
Short track @.015″ 72 114 366 (111) .600″ 104 76 360 (76) .600″ (145) (148)