Drag Race 4/7 Swap 279/286 Solid Roller Cam for Chevrolet Small Block

MECHANICAL ROLLER-400 c.i.+ engines, good heads, high compression, 0.900 base circle.


SBC - 1955-57 models have an oiling groove in the rear journal. The listed part numbered cams will not fit these models, so if you require a camshaft with the oiling groove, please call us at 1-800-999-0853 or click here to contact us, and we will assist you with placing an order.

Grind Number: 47S 312R-8
Engine Family: Chevrolet 262-400 c.i. 8 Cylinder (1958-1998)
RPM Operating Range: 5,000-7,500
Cam Type: Solid Roller
Lifter Style: Solid Roller
Camshaft Series: Drag Race 4 and 7 Swap Firing Order (.900" Base Circle)
Camshaft Gear Attachment: 3-Bolt
Usage: Strip
Valve Springs Required: Yes
Camshaft Material: Billet Steel
California Proposition 65: WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov
Advertised Intake Duration: 312
Advertised Exhaust Duration: 325
Intake Duration at .050 Inch Lift: 279
Exhaust Duration at .050 Inch Lift: 286
Intake Valve Lift: 0.679
Exhaust Valve Lift: 0.645
Lobe Separation: 108
Assembly Lubricant Included: No
Valve Timing @ 0.05 Lift:
Exhaust Close ATDC: 35
Exhaust Open BBDC: 71
Intake Open BTDC: 32
Intake Close ABDC: 67
Note Description
14Requires upgraded gear, thrust button & wear plate
Component Part Number
Break-In Lube: 159
Distributor Gears: 412
Lifter Kit: 891-16
Rev Kit: 4000
Steel Retainers: 732-16
Timing Set: 3100KT
Valve Locks: 611-16
Valve Seals: 503-16
Valve Springs: 999-16