Neal Chance Racing Converters Unveils Brand New Line Of GM 4L80 Torque Converters

General Motors used the 4L80 transmission and 6L80 transmission in numerous vehicle platforms. These transmissions are robust enough to handle a lot of horsepower and offer overdrive, which makes them great for high-performance applications. Neal Chance Racing Converters (NCRC) has developed a line of torque converters for these transmissions that really unlock their performance potential.

Most of the 4L80 and 6L80 torque converters on the market still use junkyard passenger-car cores originally designed for low-power street vehicles. While these converters do work, they aren’t ideal for high-performance racing applications. NCRC saw an opportunity to improve the design of these converters and used a blank-slate approach to make it happen.

“About six or seven years ago, with our Pro Mod format converters, we were tired of trying to use passenger converter cores,” Marty Chance from NCRC says. “When we started making billet stuff, we realized how inefficient it is to use a passenger vehicle converter core out of the junkyard that was designed for grocery getting, or the power curve of your grandma’s grocery getter.”

Instead of relying on recycled cores, NCRC began applying the lessons learned from its billet Pro Mod converters to a more affordable platform.

“That’s where we got to thinking, not everybody can afford a billet converter. So, let’s take our technology based on our billet converter for our Pro Mod program and stamp our own pumps and turbines. Then we’ve got a less expensive version that everybody can afford.”

This is how NCRC’s 4L80 and 6L80 torque converter program was born. The new converters NCRC offers are made with new parts from the ground up, there isn’t a single ounce of OEM DNA in these units. The company invested a substantial amount of money in the program to create a torque converter that would work in a 500-horsepower street cruiser all the way to a 3,000-horsepower drag-and-drive machine.

Inside these 4L80 and 6L80 torque converters, you’ll find:

• 10-strut mechanical diode
• Pro Mod stators
• Triple-disc lockup clutch (instead of a typical single clutch)
• Neal Chance proprietary clutch system
• Pro Mod XT turbine impeller

NCRC also offers multiple pump designs (10°, 20°, and 30° angles) to allow tuning flexibility. There is also a bolt-together version of each converter that allows racers to change components themselves, making the converter serviceable without sending it back to the manufacturer.

“The goal is to bring Pro Mod converter technology to a broader market, from street-driven LS-powered cars to extreme drag-and-drive builds. These converters can be configured in multiple ways and use one of the 1,000+ stator options we offer. It’s a great way to really get the most out of a 4L80 or 6L80 transmission,” Chance states.

You can learn more about Neal Chance Racing Converters’ new 4L80 and 6L80 units on the company’s website.