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Technical Articles for Part Number CCA-12-252-4
COMP Cams Xtreme Turbo Camshafts
Camshaft, Hydraulic Flat Tappet, Advertised Duration 256/263, Lift .447/.444, Chevy, Small Block, Each
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Estimated Ship Date: Oct 23, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
12-252-4
Part Type:
Product Line:
Summit Racing Part Number:
CCA-12-252-4
UPC:
036584078760
Cam Style:
Hydraulic flat tappet
Camshaft Use:
Street/Strip
Basic Operating RPM Range:
1,800-6,000
Intake Duration at 050 inch Lift:
212
Exhaust Duration at 050 inch Lift:
212
Duration at 050 inch Lift:
212 int./212 exh.
Advertised Intake Duration:
256
Advertised Exhaust Duration:
263
Advertised Duration:
256 int./263 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.447 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.444 in.
Valve Lift with Factory Rocker Arm Ratio:
0.447 int./0.444 exh.
Lobe Separation (degrees):
112
Remanufactured:
No
Computer-Controlled Compatible:
No
Grind Number:
XT256H
Valve Springs Required:
Yes
Quantity:
Sold individually.
COMP Cams Xtreme Turbo Camshafts
Get higher rpm for the street with COMP Cams Xtreme Turbo camshafts. They help build pressure between the engine and turbo for faster spool-up and deliver a wide powerband without compromising peak power. They are designed to focus on systems with boost-to-back pressure ratios that are similar to those on most modern turbo systems. Go extreme with Xtreme Turbo camshafts 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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