Are these rocker arms suitable for all Small Block Chevy engines?

These specific rocker arms are designed for the intake valves of Small Block Chevy engines that are equipped with Twisted Wedge heads. They use a 3/8" stud. Twisted Wedge heads require standard SBC exhaust valve rockers.

What is the maximum spring pressure these rocker arms can handle?

These Ultra Pro Magnum rocker arms are designed to withstand up to 850 pounds of open spring pressure. They are covered by a lifetime warranty against breakage of the rocker bodies.

Do these rocker arms come with all the necessary hardware for installation?

This product listing is for the rocker arms themselves. It is recommended to refer to the manufacturer's installation instructions or consult a professional to ensure you have all the required hardware and tools for proper installation.

COMP Cams Rocker Arms 1.6 Ratio 3/8" Stud 1609-1

Name: COMP Cams Rocker Arm CS Tw 1.6 3/8 Ultra
Brand: COMP Cams
Price: 48.82 USD
Availability: InStock

COMP Cams Rocker Arm CS Tw 1.6 3/8 Ultra

$48.82

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COMP Cams Ultra Pro Magnum rocker arms for SBC with Twisted Wedge heads. 1.6 ratio, 3/8" stud, 850lb spring pressure. Part# 1609-1. Direct fit.

Key Features

Fits a wide range of vehicles, including many Chevrolet, Buick, and Cadillac models.
Designed for Small Block Chevy intake valves with Twisted Wedge heads.
Features a 1.6 ratio to increase valve lift.
Uses a 3/8" diameter stud.
Constructed from investment-cast 8650 chromemoly steel for strength and rigidity.
Black oxide exterior finish helps prevent corrosion and increases durability.

⚠️ 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

If you're working on a Small Block Chevy engine with Twisted Wedge heads and need to replace the intake rocker arms, these Ultra Pro Magnum units from COMP Cams are a solid option. They're designed to handle up to 850 pounds of open spring pressure, making them suitable for many performance builds. The 1.6 ratio helps to increase valve lift, which can improve airflow into the cylinder.

These rocker arms are built from investment-cast 8650 chromemoly steel, giving them a strong and rigid foundation. COMP Cams uses an arched, web-like design that increases strength while also reducing the moment of inertia for better dynamic balance. The black oxide exterior finish not only looks good but also helps prevent corrosion and adds durability. Inside, you'll find oversized trunnions, precision-sorted needle bearings, and hardened roller tips for smooth operation and long life. The design also accounts for optimized retainer and valve spring clearances, so you can use most common spring diameters and +.050" locks without issues.

These are specifically for the intake valves on SBC engines with Twisted Wedge heads, using a 3/8" stud. Remember that Twisted Wedge heads use standard SBC exhaust valve rockers. This part fits a wide range of vehicles, including many Chevrolet, Buick, and Cadillac models from the 1980s and 1990s.