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Instruction Sheets for Part Number CCA-11-677-20
Technical Articles for Part Number CCA-11-677-20
COMP Cams Xtreme Energy Pro-Plasma Nitrided Camshafts 11-677-20
Part Number: CCA-11-677-20
COMP Cams Xtreme Energy Pro-Plasma Nitrided Camshafts
Camshaft, Mechanical Flat Tappet, Advertised Duration 274/280, Lift .568/.578, Chevy, Big Block, Each
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Estimated Ship Date: Dec 21, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
11-677-20
Part Type:
Product Line:
Summit Racing Part Number:
CCA-11-677-20
UPC:
036584177876
Cam Style:
Solid flat tappet
Camshaft Use:
Street/Strip
Camshaft Manufacturers Description:
Very strong mid-range torque and throttle response, 2500+ stall.
Basic Operating RPM Range:
2,000-6,400
Intake Duration at 050 inch Lift:
236
Exhaust Duration at 050 inch Lift:
242
Duration at 050 inch Lift:
236 int./242 exh.
Advertised Intake Duration:
274
Advertised Exhaust Duration:
280
Advertised Duration:
274 int./280 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.568 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.578 in.
Valve Lift with Factory Rocker Arm Ratio:
0.568 int./0.578 exh.
Lobe Separation (degrees):
110
Camshaft Gear Attachment:
3-bolt
Intake Valve Lash:
0.016 in.
Exhaust Valve Lash:
0.016 in.
Remanufactured:
No
Computer-Controlled Compatible:
No
Grind Number:
XS274S
Valve Springs Required:
Yes
Quantity:
Sold individually.
COMP Cams Xtreme Energy Pro-Plasma Nitrided Camshafts
An excellent performing cam in street carbureted applications, just got more extreme! COMP Cams Xtreme Energy Pro-Plasma Nitrided camshafts give you the benefits of their best-selling cam with extreme durability. Pro-Plasma nitriding gives these cams increased hardness for improved initial and long-term wear characteristics. The race-proven process is the best way to increase the durability and lubricity of flat tappet camshafts. Don't be blinded by the bling of other shiny cams--choose COMP Cams Xtreme Energy Pro-Plasma nitrided camshafts.
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Some parts are not legal for use in California or other states with similar laws / regulations
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