What kind of idle can I expect with this camshaft?

This Big Mutha' Thumpr camshaft is designed for aggressive performance and will produce a very rough idle. This is typical for high-performance camshafts intended for street and strip use.

What other components are recommended to use with this camshaft?

To achieve optimal performance, it's recommended to pair this camshaft with an engine that has a 9.5:1 compression ratio, a torque converter with at least a 2800 RPM stall speed, and appropriate intake, gears, and headers.

Can this camshaft be shipped to California?

No, this camshaft is not CARB approved and cannot be shipped to California due to emissions regulations.

COMP Cams Camshaft 48-602-10 Hydraulic Roller for Chevy 348-

Name: COMP Cams Camshaft C409 47S299THR8
Brand: COMP Cams
SKU: comp-cams-comp-cams-camshaft-c409-47s299thr8-t14-4392544
Price: 818.79 USD
Availability: BackOrder

COMP Cams Camshaft C409 47S299THR8

$818.79

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 Camshaft C409 47S299THR8BMT 243/257 HRlr Chev

Key Features

Fits Chevrolet 348-409 engines.
Hydraulic roller camshaft with a 4/7 swap design.
Intake duration is 243 degrees, exhaust duration is 257 degrees.
Designed for street and strip performance applications.
Requires a 9.5:1 compression ratio.
Needs a 2800+ RPM stall speed torque converter.

This camshaft is designed for Chevrolet 348 and 409 engines. Please consult manufacturer fitment data for specific vehicle compatibility.

⚠️ 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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Product Details

This is the COMP Cams Big Mutha' Thumpr camshaft, part number 48-602-10, designed for Chevrolet 348 and 409 engines. It's a hydraulic roller camshaft featuring a 4/7 swap design, with intake duration at 243 degrees and exhaust duration at 257 degrees. This camshaft is built for street and strip applications, aiming to significantly change your engine's performance profile.

To get the most out of this camshaft, you'll need to ensure your engine is set up correctly. It requires a minimum of 9.5:1 compression ratio to operate effectively. You'll also want to pair it with a torque converter that has at least a 2800 RPM stall speed, along with appropriate intake, gears, and headers to complement its aggressive nature. Be aware that this camshaft produces a very rough idle, which is characteristic of its high-performance design and intended for those who prioritize power and sound over a smooth, quiet operation.

Please note that this camshaft is not CARB approved and cannot be shipped to California. It is also subject to California's Proposition 65 warning.