What is the main benefit of using these retro-fit hydraulic roller lifters?

These lifters allow you to upgrade your AMC V8 engine from a flat tappet camshaft to a hydraulic roller setup. This generally leads to improved valvetrain efficiency, reduced friction, and the potential for higher RPM operation.

What does 'lowest leakdown rate' mean for engine performance?

A low leakdown rate means the lifter holds oil pressure more effectively. This ensures consistent valve lash and proper operation of the valvetrain, especially important for reliable performance and preventing potential issues at higher engine speeds.

Are any other parts needed to install these lifters?

To complete a hydraulic roller conversion, you will typically need a compatible hydraulic roller camshaft, roller rocker arms, and pushrods. It is recommended to consult the COMP Cams installation instructions or a qualified mechanic for a complete parts list and procedure.

COMP Cams AMC Hydraulic Roller Lifters 8960-16

Name: COMP Cams Lifter AMC Hydraulic Roller L
Brand: COMP Cams
SKU: comp-cams-comp-cams-lifter-amc-hydraulic-roller-l-t14-4395003
Price: 987.46 USD
Availability: BackOrder

COMP Cams Lifter AMC Hydraulic Roller L

$987.46

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 Lifter AMC Hydraulic Roller L. Upgrade your AMC 290-401 with these retro-fit hydraulic roller lifters for improved performance.

Key Features

Fits AMC 290-401 V8 engines originally equipped with flat tappet cams.
Retro-fit design allows for hydraulic roller upgrade without block modification.
Patent-pending piston offers precise fit for lowest leakdown rate.
Trapped air escapes the piston for faster lifter pump-up.
Axles are produced from heat-treated 52100 steel for increased wear resistance and strength.
Lightweight body design contributes to overall valvetrain efficiency.

⚠️ 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

COMP Cams is well-known for its performance valvetrain components, and these Retro-Fit Hydraulic Roller Lifters are a prime example of their commitment to improving engine performance. If you're working on an AMC V8 engine originally equipped with a flat tappet camshaft, these lifters are designed to let you upgrade to a hydraulic roller setup without needing to change your block. This is a significant advantage for anyone looking to get more out of their classic AMC 290, 304, 360, or 401ci engine.

What sets these lifters apart is their patent-pending design. The precise piston fit is engineered for the lowest possible leakdown rate, meaning the lifter maintains oil pressure more consistently. Furthermore, the patent-pending piston design allows trapped air to escape, which helps the lifter 'pump up' faster. This is crucial for ensuring proper valve lash and consistent operation, especially during initial startup and at higher RPMs. The lifter bodies themselves are lightweight, and the axles are made from heat-treated 52100 steel, a strong material chosen for its increased wear resistance and overall durability under the stresses of engine operation. This set includes all 16 lifters needed for a complete engine build.

With a standard .904-inch diameter, these lifters are designed to fit directly into blocks that originally used flat tappet lifters, making the conversion straightforward. The seat height is 2.30 inches, and each lifter weighs in at 145 grams. This is a well-built set from a trusted name in performance parts, offering a solid path to improved valvetrain efficiency and performance for your AMC V8.