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How to Identify a World Class T5 Transmission

by Floyd Drake III

The Borg Warner T5 five-speed manual transmission has been used by most auto manufacturers in many different models since 1982. Two versions of the T5 exist, the World Class (WC) and non-World Class (NWC). T5s are commonly found in Ford Mustangs, Chevrolet Camaros, Pontiac Firebirds and Chevrolet S-10 pickups. The WC designation was first used the 1985 5.0 liter Ford Mustang and then on Camaros/Firebirds in 1988. Chevy S-10 use started in 1993. T5 production ended for production vehicles in 1995. Identification requires both ID tag decoding and visual differentiation between WC and NWC models.

1

Find the ID tag attached to one of the transmission's tail-housing bolts. The tag has a five to seven-digit model number, with the final three-digits, the model application number, being the most important. The number follows this pattern: 13-52-XXX.

2

Match the model application number to a T5 model number listing similar to one found on the Mongosgarage website. All T5 ID codes begin with "13-52" the final three digits are the numbers to be referenced to this listing.

3

Identify the differences between the WC and NWC T5 transmissions. According to the FlatheadV8 website, the main differences are in the bearings and synchros, however, there is one external difference-the front counter-shaft bearing retainer. The NWC has a one-piece design that looks like a large freeze-plug and the WC has a two-piece design resembling two concentric circles. An illustration appears on the FlatheadV8 website.

About the Author

A native of New Haven, Conn., Floyd Drake III began writing in 1984. His work has appeared in the "New Haven Register," Medford's "Mail-Tribune" and the "Ashland Daily Tidings." Drake studied journalism at Southern Connecticut State University. After working as a reporter in Oregon, he is now based back home in New Haven.

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