Drag Race 4/7 Swap 284/296 Solid Roller Cam for Chevrolet Big Block 396-454, MECHANICAL ROLLER-Fast bracket, good heads, 13:1 comp, 5000+ stall, small nitrous. BBC - 1965-66 396 c.i. 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:
- 5,000-8,500
- Intake Duration at .050 inch Lift:
- 286
- Exhaust Duration at .050 inch Lift:
- 296
- Duration at .050 inch Lift:
- 286 int./296 exh.
- Advertised Intake Duration:
- 321
- Advertised Exhaust Duration:
- 336
- Advertised Duration:
- 321 int./336 exh.
- Intake Valve Lift with Factory Rocker Arm Ratio:
- 0.748 in.
- Exhaust Valve Lift with Factory Rocker Arm Ratio:
- 0.748 in.
- Valve Lift with Factory Rocker Arm Ratio:
- 0.748 int./0.748 exh.
- Lobe Separation (degrees):
- 112
- Computer-Controlled Compatible:
- No
- Material:
- Billet Steel
- Camshaft Gear Attachment:
- 3-bolt
- Valve Springs Required:
- Yes
- Grind Number:
- 47S 321R12
- Hot Lash:
- 0.026 in. int./0.028 in. exh.
- Camshaft Usage:
- Drag race
- Camshaft Manufacturers Description:
- Mechanical Roller - Drag Race 4 & 7 Swap: Fast Bracket, good heads, 13:1+ compression., 5000+ stall, small N2O.
- Quantity:
- Sold individually.
- Make:
- Chevrolet
- Engine Family:
- Chevy big block Mark IV
- Engine Sizes:
- 6.5L396-7.4L/454
- Years:
- 1967-1990
- Engine Family:
- Chevy big block Gen V
- Engine Sizes:
- 7.4L/454
- Years:
- 1991-1995
