Drag Race/Oval Track 4/7 Swap 252/258 Solid Roller Cam for Chevrolet Small Block, MECHANICAL ROLLER-Baseline short track cam. Heavy car and small engines. SBC - 1955-57 models have an oiling groove in the rear journal. The listed part numbered cams will not fit these models
- Cam Style:
- Mechanical Roller Tappet
- Basic Operating RPM Range:
- 4,000-7,000
- Intake Duration at .050 inch Lift:
- 252
- Exhaust Duration at .050 inch Lift:
- 258
- Duration at .050 inch Lift:
- 252 int./258 exh.
- Advertised Intake Duration:
- 288
- Advertised Exhaust Duration:
- 296
- Advertised Duration:
- 288 int./296 exh.
- Intake Valve Lift with Factory Rocker Arm Ratio:
- 0.630 in.
- Exhaust Valve Lift with Factory Rocker Arm Ratio:
- 0.630 in.
- Valve Lift with Factory Rocker Arm Ratio:
- 0.630 int./0.630 exh.
- Lobe Separation (degrees):
- 106
- Computer-Controlled Compatible:
- No
- Material:
- Billet Steel
- Camshaft Gear Attachment:
- 3-bolt
- Valve Springs Required:
- Yes
- Grind Number:
- 47S 312R-8
- Hot Lash:
- 0.020 in. int./0.022 in. exh.
- Camshaft Usage:
- Circle Track/Drag Race
- Camshaft Manufacturers Description:
- Mechanical Roller - Oval Track 4 & 7: Great torque, 10:1+ compression, 4000+ stall.
- Quantity:
- Sold individually.
- Make:
- Chevrolet
- Engine Family:
- Chevy small block Gen I
- Engine Sizes:
- 4.3L/262-6.6L/400
- Years:
- 1958-1995
