Flexplate Adapter Speedway Motors Gold Center

Description

Product Overview

The Speedway Motors Flexplate Adapter is engineered for high‑performance LS engine swaps. Constructed from cold‑rolled premium steel with a gold iridite finish, it features double‑welded ring gears and a thickness 0.035″ greater than stock, meeting SFI 29.1 certification for safety and strength. Dimensions are 14.3 x 14.3 x 0.8 inches, weighing 7 pounds, and it fits the center position of the drivetrain.

Usage

Designed for automotive enthusiasts and professional builders, this adapter works with GM TH350, 700R4, 200‑4R, 4L60, and Powerglide transmissions, making it ideal for street, track, and off‑road applications. It accommodates 10.75″ and 11.066″ (11.1″) torque converter bolt patterns, allowing seamless integration with a wide range of converters.

Why Choose Us

Speedway Motors combines decades of engineering expertise with rigorous quality control. The adapter’s thicker, SFI‑certified design reduces stress on the starter and transmission, extending component life. By using the factory LS starter, it cuts conversion costs while delivering race‑ready durability.

Key Features

• Compatible with multiple GM transmissions for versatile engine swaps
• Supports 10.75″ and 11.1″ torque converter bolt patterns
• Double‑welded ring gears for high‑horsepower durability
• SFI 29.1 certified and 0.035″ thicker than stock for added safety
• Gold iridite finish provides corrosion resistance and a premium look

FAQ

Will this adapter work with a factory LS starter?

Yes, the design is optimized to mate directly with the factory LS starter, eliminating the need for additional adapters.

Can I use this flexplate with an 11.1″ torque converter?

Absolutely, it is engineered to fit both 10.75″ and 11.066″ (commonly referred to as 11.1″) torque converter bolt patterns.

Is the gold iridite coating durable?

The gold iridite finish provides excellent corrosion resistance and maintains its appearance under high‑temperature conditions.

What is the SFI 29.1 certification?

SFI 29.1 certification ensures the flexplate meets stringent safety standards for high‑performance automotive applications.

How much heavier is this adapter compared to stock?

It weighs 7 pounds, which is comparable to stock units, but the increased thickness adds strength without a significant weight penalty.