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Technical Articles for Part Number CCA-12-863-9
COMP Cams Oval Track Camshafts
Camshaft, Mechanical Roller Tappet, Advertised Duration 291/304, Lift .648/.645, Chevy, Small Block, Each
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Overview
Brand:
Manufacturer's Part Number:
12-863-9
Part Type:
Product Line:
Summit Racing Part Number:
CCA-12-863-9
UPC:
036584015475
Cam Style:
Solid roller, Retro-fit
Camshaft Use:
Drag race
Basic Operating RPM Range:
3,700-7,600
Intake Duration at 050 inch Lift:
263
Exhaust Duration at 050 inch Lift:
272
Duration at 050 inch Lift:
263 int./272 exh.
Advertised Intake Duration:
291
Advertised Exhaust Duration:
304
Advertised Duration:
291 int./304 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.648 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.645 in.
Valve Lift with Factory Rocker Arm Ratio:
0.648 int./0.645 exh.
Lobe Separation (degrees):
108
Intake Valve Lash:
0.016 in.
Exhaust Valve Lash:
0.020 in.
Remanufactured:
No
Computer-Controlled Compatible:
No
Grind Number:
291TKNR-8
Valve Springs Required:
Yes
Quantity:
Sold individually.
Notes:
.900 base circle. These lift specs are with 1.5 in. rocker. Designed for 415-430 c.i.d. engines.
COMP Cams Oval Track Camshafts
COMP Cams oval track camshafts are designed specifically for racing applications. They are available to complement a variety of engine configurations, track lengths, and conditions--simply order the model that fits the needs of your particular make and model. Before you start the next oval track race, install the winning camshaft edge from COMP Cams.
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Instructions & Calculators
Some parts are not legal for use in California or other states with similar laws / regulations
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