What is the recommended stall speed for this camshaft?

This COMP Cams XR274 R-10 camshaft is designed for power touring and requires a torque converter with a minimum stall speed of 2500 RPM to operate effectively and achieve its performance potential.

What is the idle quality of this camshaft?

This camshaft is known for producing a rough idle, which is typical for performance-oriented solid roller camshafts designed for increased power output.

Are there any restrictions on shipping this camshaft?

Yes, this camshaft is not CARB approved and cannot be shipped to California due to emissions regulations.

COMP Cams XR274 R-10 Solid Roller Camshaft 11-770-8

Name: COMP Cams Camshaft CB XR274 R-10
Brand: COMP Cams
Price: 610.12 USD
Availability: InStock

COMP Cams Camshaft CB XR274 R-10

$610.12

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

COMP Cams XR274 R-10 solid roller camshaft for Chevrolet Big Block 396-454 engines. Great for power touring with a rough idle.

Key Features

Fits Chevrolet Big Block 396-454 engines originally equipped with flat tappet camshafts.
Solid roller camshaft design for improved performance and reliability.
Intake duration of 236 degrees and exhaust duration of 242 degrees at .050 inch lift.
Recommended for power touring applications requiring a 2500+ RPM stall torque converter.
Offers reliable power gains with a characteristic rough idle.
Not CARB approved; cannot be shipped to California.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Will this fit your vehicle?

Product Details

This COMP Cams XR274 R-10 solid roller camshaft is designed for Chevrolet Big Block engines, specifically the 396 to 454 cubic inch displacements originally equipped with flat tappet camshafts. You'll receive the camshaft itself, ready for installation into your performance build. This camshaft is a popular choice for power touring applications, offering a significant boost in performance for vehicles like the Chevrolet Chevelle, Camaro, and Corvette from the late 60s and early 70s.

The XR274 R-10 features a 236-degree intake and 242-degree exhaust duration at .050 inch lift, making it a potent upgrade for those seeking more power. Its solid roller design means it needs a 2500+ RPM stall torque converter to operate effectively and is built to be reliable, providing strong power gains without being overly harsh on other engine components. Expect a rough idle with this camshaft, which is characteristic of its aggressive performance profile. It's important to note that this camshaft is not CARB approved and cannot be shipped to California.

When installing this camshaft, ensure your engine is set up to handle its demands. A minimum 2500 RPM stall speed torque converter is recommended, and it's designed for easy operation on engine parts. Always refer to the manufacturer's installation instructions for specific details regarding valve springs, pushrods, and other necessary components to ensure optimal performance and longevity.