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 |
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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) |