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COMP Cams 12-770-8 - Camshaft CS XR274 R-10, image 1 of 5
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COMP Cams 12-770-8 - Camshaft CS XR274 R-10

Sold by Complete Street Performance

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$577.95

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About this product

COMP Cams 12-770-8 - Camshaft CS XR274 R-10

Camshaft - Xtreme Energy - Mechanical Roller - Lift 0.564 / 0.570 in - Duration 274 / 280 - 110 LSA - 2200 / 6200 RPM - Small Block Chevy - Each

Great for power touring. Needs 2500+ stall, easy on parts. Rough idle.

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 contact us, and we will assist you with placing an order. WARNING: Camshaft Optimized for use with a Melanized or Nitrided distributor Gear. Not compatible with cast or Steel Gears without similar surface treatments. Failure to utilize the proper distributor Gear will void all warranties and/or return policies.

Camshaft Series: Xtreme Energy
Usage: Street/Performance
Basic Operating RPM Range: 2,200-6,200
Lifters Included: No
Assembly Lubricant Included: No
Camshaft Material: Austempered Ductile Iron
Engine Family: Chevrolet 262-400 c.i. 8 Cylinder (1958-1998)
Cam and Lifter Kit Upgrade: CL12-770-8
Amazon ASIN: B000V9ET1G
K-Kit Upgrade: K12-770-8
SK-Kit Upgrade: SK12-770-8
C.A.R.B. Exempt for Racing and Off-Road Only Vehicles?: Yes, but must be a race/competition only vehicle.
C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967?: Yes, but must meet tailpipe emission standards for year of vehicle.
C.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?: Yes, but must meet tailpipe emission standards for year of vehicle.
C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967?: Yes, but must meet tailpipe emission standards for year of vehicle.
C.A.R.B. Exempt for On-Road Vehicles?: No
C.A.R.B. Exemption Reason: N/A
C.A.R.B. E.O. Number: N/A
Grind Number: XR274R
Camshaft Gear Attachment: 3-Bolt
Cam Type: Solid Roller
Camshaft Gear Attachment: 3
Valve Springs Required: Yes
Lifter Type: Solid Roller
Intake Duration at .050 Inch Lift: 236
Exhaust Duration at .050 inch Lift: 242
Advertised Intake Duration: 274
Advertised Exhaust Duration: 280
Lobe Separation: 110
Intake Valve Lift: 0.564
Exhaust Valve Lift: 0.57

Description supplied by Complete Street Performance through its current Shopify listing. Product, performance, and health claims are the seller’s and have not been independently verified by StorkScout.