What is the purpose of a guide plate in an LS engine?

Guide plates are essential for performance LS engines running high-lift camshafts and stiffer valve springs. They ensure your pushrods stay properly aligned with the rocker arms, preventing wear and maintaining consistent valvetrain geometry.

What size pushrods and rocker studs do these guide plates fit?

These COMP Cams guide plates are specifically designed for 5/16" diameter pushrods and 8mm rocker studs, commonly found in many GM LS engine applications.

Are these guide plates suitable for stock LS engines?

While these guide plates are hardened and built for durability, they are most beneficial in performance applications with higher lift camshafts and spring pressures. For a stock engine, they may not be strictly necessary but will still ensure proper pushrod alignment.

COMP Cams GM LS1 Guide Plates 4854-8 | 5/16 Flat

Name: COMP Cams Guide Plates GM LS1 5/16 Flat
Brand: COMP Cams
Price: 35.95 USD
Availability: InStock

COMP Cams Guide Plates GM LS1 5/16 Flat

$35.95

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COMP Cams Guide Plates for GM LS engines with 5/16" pushrods and 8mm studs. Essential for high-lift cams.

Key Features

Fits 48+ vehicle make/model combinations.
Designed for GM LS engines with cathedral port cylinder heads.
Accommodates 5/16" diameter pushrods and 8mm rocker studs.
Flat, one-piece design with rounded contact points for smooth operation.
Hardened steel construction with a black oxide finish for durability.
Necessary for high-lift camshafts and high spring pressure applications.

⚠️ 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

If you're building a performance GM LS engine, especially one with cathedral port heads like the LS1 or LS6, you'll want to make sure your valvetrain is set up right. These flat, one-piece guide plates from COMP Cams are a necessary component when you're running higher lift camshafts and stiffer valve springs. They help keep your 5/16" diameter pushrods properly aligned with the rocker arms, preventing excessive wear and ensuring consistent valve operation under demanding conditions.

These guide plates are hardened and finished with a black oxide coating for durability, meaning they're built to handle the increased forces in a performance engine. COMP Cams used stereo lithography techniques to ensure an accurate fit, and they feature rounded contact points for smooth operation. This set includes all eight guide plates needed for a full engine build and is designed to work with 8mm rocker studs.

This set is a direct replacement for COMP Cams' own Ultra Pro Magnum Rocker Kit #16755-Kit, but they'll work with other compatible valvetrain setups as well. They fit a wide range of GM LS engines found in everything from Chevrolet Silverado trucks to Cadillac Escalades.