SMALL-BLOCK CAMSHAFTS AND COMPONENTS
3896962
Hydraulic flat tappet
- Duration @ .050" Lift (deg): I: 222 / E: 222
- Maximum Lift (in) w/1.5 rocker*: I: .450 / E: .460
- Lobe Centerline (deg): 114
- Used in 350-/290-HP crate engine
24502476
Hydraulic flat tappet
- Duration @ .050" Lift (deg): I: 212 / E: 222
- Maximum Lift (in) w/1.5 rocker*: I: .435 / E: .460
- Lobe Centerline (deg): 112.5
- Used in 350 HO and CT350 engines
14097395
Hydraulic roller design
- Duration @ .050" Lift (deg): I: 196 / E: 206
- Maximum Lift (in) w/1.5 rocker*: I: .431 / E: .451
- Lobe Centerline (deg): 109
- For the HT383 truck engine with 1.5 rockers
10185071
Hydraulic roller tappet
- Duration @ .050" Lift (deg): I: 208 / E: 221
- Maximum Lift (in) w/1.5 rocker*: I: .474 / E: .510
- Lobe Centerline (deg): 112
- For ZZ3, 350 HO, ZZ4, and Fast Burn 385 engines; use with spring P/N 10134358 or 12551483
24502586 (1.5 rocker)
Hydraulic roller (Gen II LT4 hot cam)
- Duration @ .050" Lift (deg): I: 218 / E: 228
- Maximum Lift (in) w/1.5 rocker*: I: .492 / E: .492
- Lobe Centerline (deg): 112
- Service only; for all V-8 engines with roller cams. (See note at bottom of page.)
24502586 (1.6 rocker)
Hydraulic roller (Gen II LT4 hot cam)
- Duration @ .050" Lift (deg): I: 218 / E: 228
- Maximum Lift (in) w/1.6 rocker: I: .525 / E: .525
- Lobe Centerline (deg): 112
- Service only; for all V-8 engines with roller cams. (See note at bottom of page.)
12480002
Hydraulic roller (Gen II LT4 hot cam)
- Duration @ .050" Lift (deg): I: 218 / E: 228
- Maximum Lift (in) w/1.6 rocker: I: .525 / E: .525
- Lobe Centerline (deg): 112
- Same as P/N 24502586, except this is a kit that includes 1.6 ratio aluminum rockers, valve springs, and retainers. (See note at bottom of page.)
19210723
Hydraulic roller design
- Duration @ .050" Lift (deg): I: 222 / E: 230
- Maximum Lift (in) w/1.5 rocker: I: .509 / E: .528
- Lobe Centerline (deg): 112
- Off-highway use only; contains eccentric for mechanical fuel pump
19244485
Hydraulic roller design
- Duration @ .050" Lift (deg): I: 234 / E: 242
- Maximum Lift (in) w/1.5 rocker: I: .539 / E: .558
- Lobe Centerline (deg): 112
- Off-highway use only; contains eccentric for mechanical fuel pump
NOTE: The Gen-II 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.
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