Drag Race 280/292 .900 Base Circle Solid Roller Cam for Chevrolet Small Block

MECHANICAL ROLLER-355 cu.in. and up, ported head, 5500 stall in light car. .900 base circle.

SKU
12-727-9
$374.98

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: 317ER-6
Engine Family: Chevrolet 262-400 c.i. 8 Cylinder (1958-1998)
RPM Operating Range: 5500-7,800
Cam Type: Solid Roller
Lifter Style: Solid Roller
Camshaft Series: Drag Race (.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: 317
Advertised Exhaust Duration: 330
Intake Duration at .050 Inch Lift: 280
Exhaust Duration at .050 Inch Lift: 292
Intake Valve Lift: 0.66
Exhaust Valve Lift: 0.63
Lobe Separation: 106
Assembly Lubricant Included: No
Valve Timing @ 0.02 Lift:
Exhaust Close ATDC: 59
Exhaust Open BBDC: 91
spec-card-valve-timing
Intake Open BTDC: 53
Intake Close ABDC: 84
Note Description
14Requires upgraded gear, thrust button & wear plate
46Must use bronze tip fuel pump pushrod when using high pressure or high volume pump
Component Part Number
Break-In Lube: 159
Distributor Gears: 12200  /   412
Lifter Kit: 891-16
Rev Kit: 4000
Steel Retainers: 731-16  /   732-16
Timing Set: 3100KT
Valve Locks: 611-16
Valve Seals: 503-16
Valve Springs: 944-16  /   999-16