What drivetrain modifications are needed for this camshaft?

This camshaft requires an aftermarket torque converter with a stall speed of 2800 RPM or higher, along with lower gear ratios. You will also need to upgrade your intake, headers, and exhaust system to properly utilize its performance potential.

Will this camshaft affect my power brakes?

Yes, Thumpr camshafts typically reduce vacuum at idle. If your vehicle has power brakes, you will need to install a vacuum canister, pump, or hydroboost system to ensure they function correctly.

What compression ratio is recommended for this camshaft?

This camshaft is designed for engines with a minimum compression ratio of 9.5:1 to achieve optimal performance and its intended aggressive idle characteristics.

COMP Cams Thumpr Camshaft A8 295T H-107 T 10-604-5

Name: COMP Cams Camshaft A8 295T H-107 T Thumper
Brand: COMP Cams
SKU: comp-cams-comp-cams-camshaft-a8-295t-h-107-t-thumper-t14-4389787
Price: 378.83 USD
Availability: BackOrder

COMP Cams Camshaft A8 295T H-107 T Thumper

$378.83

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 Thumpr camshaft (10-604-5) for AMC V8s. Creates an aggressive idle and improves horsepower.

Key Features

This product is a COMP Cams Thumpr camshaft, part number 10-604-5.
Designed for AMC 290, 304, 343, 360, and 401 cubic inch V8 engines.
Creates an aggressive, hard-hitting exhaust note at idle.
Delivers excellent horsepower gains and a broad torque curve.
Requires an aftermarket torque converter (2800+ stall), lower gear ratio, intake, and headers.
Typically reduces vacuum at idle, necessitating a vacuum canister, pump, or hydroboost for power brakes.

⚠️ 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 Thumpr camshaft is designed for AMC V8 engines, specifically the 290, 304, 343, 360, and 401 cubic inch displacements. It's built to give your muscle car or street rod that unmistakable, aggressive idle sound that turns heads, while also boosting horsepower and broadening the torque curve. The camshaft's design features early intake valve opening and extended exhaust duration, creating significant valve overlap for that race-car-like idle.

To make the most of this camshaft and ensure your drivetrain stays in its powerband, it requires an aftermarket torque converter with a stall speed of 2800 RPM or higher, along with lower gear ratios. You'll also need to upgrade your intake, headers, and exhaust system. Because this camshaft typically reduces vacuum at idle, vehicles equipped with power brakes will need a vacuum canister, pump, or hydroboost system to maintain proper braking function. This camshaft is intended for street/strip use and requires at least 9.5:1 compression.