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Technical Articles for Part Number CCA-20-309-4
COMP Cams Magnum Muscle Camshafts
Camshaft, Hydraulic Flat Tappet, Advertised Duration 268/276, Lift .464/.464, Mopar, Small Block, Each
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Estimated Ship Date: Oct 22, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
20-309-4
Part Type:
Product Line:
Summit Racing Part Number:
CCA-20-309-4
UPC:
036584610830
Cam Style:
Hydraulic flat tappet
Camshaft Use:
Street/Strip
Basic Operating RPM Range:
1,800-5,800
Intake Duration at 050 inch Lift:
222
Exhaust Duration at 050 inch Lift:
226
Duration at 050 inch Lift:
222 int./226 exh.
Advertised Intake Duration:
268
Advertised Exhaust Duration:
276
Advertised Duration:
268 int./276 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.464 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.464 in.
Valve Lift with Factory Rocker Arm Ratio:
0.464 int./0.464 exh.
Lobe Separation (degrees):
110
Remanufactured:
No
Computer-Controlled Compatible:
No
Grind Number:
268AH-10
Valve Springs Required:
Yes
Quantity:
Sold individually.
Notes:
Fits factory ID number 2899206.
COMP Cams Magnum Muscle Camshafts
These Magnum Muscle camshafts follow the tradition of excellence that COMP Cams is famous for. These cams offer a step up from original equipment cam designs. They are stronger than stock, and are tailored to the traditional high-compression engines of the '60s and '70s, through to the design techniques of today.
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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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