Adjustable Transmission Crossmember for 1964-1987 Chevy GMC C10 C20

In this review the JY PERFORMANCE Adjustable Transmission Crossmember is evaluated for drivers restoring or modifying 1964-1987 Chevy and GMC C10/C20 trucks, Blazers, and Suburbans. The bottom line: it is a practical replacement that keeps the factory transmission angle for correct driveshaft alignment while offering adjustability for lifted or lowered vehicles, and the primary reason to buy is its straightforward fit and functional design that addresses alignment without complex modification.

Key Features

• Fitment: Designed specifically for 2wd 1964-1987 C10 and C20 trucks, Blazer, and Suburban so installers can expect direct compatibility with common frame hole patterns.
• Adjustable design: The crossmember adjusts to maintain the factory transmission angle, which helps preserve proper driveshaft alignment after suspension changes.
• Heavy duty steel: Constructed from robust steel to provide a solid mounting point compared with softer factory rubber mounts, contributing to consistent transmission positioning.
• Black powder coat: A black powder coated finish offers corrosion resistance and a clean appearance under the truck for longer service life.
• Service support: The seller commits to answering questions within 24 hours, providing a clear avenue for help during installation or fitment checks.

Who It's For

This crossmember is best for classic Chevy and GMC C10/C20 owners who are lifting or lowering their 2wd trucks and need an adjustable transmission mount that preserves factory transmission angle and simplifies driveshaft alignment. It is also useful for restorers who prefer a steel mount over worn rubber components to improve long-term positioning.

Those who should look elsewhere include owners of 4wd vehicles or those needing a mount engineered for extreme off-road abuse without reinforcement; also buyers seeking a fully vibration-isolated rubber solution may prefer a different mount type.

Pros & Cons

Pros

• Good fit and alignment for the intended 1964-1987 2wd C10/C20 applications.
• Adjustability simplifies retaining factory transmission angle after lifts or drops.
• Heavy duty steel and powder coat finish improve durability and appearance versus aged rubber mounts.
• Responsive seller support with answers within 24 hours.

Cons

• Some customers reported failures under use, suggesting occasional sturdiness concerns under heavy stress.
• Not a vibration-isolating rubber mount, so NVH may differ from factory rubber solutions.

Specifications

Our Verdict

The JY PERFORMANCE Adjustable Transmission Crossmember is a practical, value-oriented choice for vintage Chevy and GMC 2wd truck owners who need to maintain driveshaft alignment after suspension changes. Its adjustable steel design and powder coat finish make it a sensible upgrade from deteriorated rubber mounts, though buyers seeking maximum toughness or isolation should confirm load requirements before fitting.

Frequently Asked Questions

Will this fit a lowered C10?
Yes, the crossmember is adjustable and intended for lifted or lowered 1964-1987 2wd C10/C20 applications to retain the factory transmission angle.

What material is it made from?
The unit is made from heavy duty steel with a black powder coated finish for corrosion resistance.

Is installation difficult?
Installation is straightforward for someone comfortable with basic driveline and frame work, and the seller offers 24 hour question support if issues arise.