Why do I need spring seats for my LS1 engine build?

Standard shims can fail under the extreme spring pressures and high RPMs common in racing engines. These hardened steel alloy seats protect your cylinder heads and ensure the spring stays properly located, preventing potential valvetrain issues.

What is the difference between these seats and older designs?

Older designs often required significant cylinder head machining to accommodate an external cup. These seats feature an internal locator shoulder, making them easier to install without extensive head modification while still holding the spring securely.

What is included in this set?

This set includes 100 spring seats. This quantity is typically enough for multiple engines or provides extras for your build.

COMP Cams LS1 Spring Seats Set of 100 4695-100

Name: COMP Cams Spring Seat Gm LS1 Eb 1.300in - Set of 100
Brand: COMP Cams
SKU: comp-cams-comp-cams-spring-seat-gm-ls1-eb-1-300in-set-of-100-t14-4392279
Price: 332.71 USD
Availability: BackOrder

COMP Cams Spring Seat Gm LS1 Eb 1.300in - Set of 100

$332.71

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 LS1 spring seats, set of 100. Hardened steel alloy protects heads and locates springs.

Key Features

Set includes 100 spring seats for GM LS1 engines.
Made from a thin, hardened steel alloy to withstand high spring pressures and RPM.
Protects the cylinder head and the spring shim from damage.
Features an inside diameter locator shoulder to keep the spring centered.
Outer diameter is 1.300 inches and thickness is 0.060 inches.

Secure CheckoutFast Shipping631-982-0042

Product Details

COMP Cams is well-known for making performance valvetrain components. If you're building a high-RPM LS1 engine, especially for racing, you know that standard shims can struggle under extreme spring pressures. This set of 100 spring seats from COMP Cams offers a smart solution to protect your cylinder heads and keep your springs properly located.

These seats are made from a thin, hardened steel alloy, which is much tougher than older shim designs and can handle the demands of high-RPM operation. Unlike some previous designs that required extensive machining to fit, these feature an inside diameter locator with a shoulder that fits within the spring cup. This design helps keep the spring centered and stable, preventing it from shifting under load. The 1.300-inch outer diameter and 0.060-inch thickness are designed to work with many LS1 cylinder heads.

This set includes 100 seats, giving you plenty for multiple engines or if you need extras during your build. They are a straightforward way to add durability and reliability to your LS1 valvetrain.