Does your '54 have a stock 235 in it? While a T85 is stronger I doubt that a regularly driven 235 would damage a T86. My son blew 3 T86s in his Studebaker wagon but they were behind a supercharged 289 Stude V8 driven hard for thousands of miles. The R10 OD was in Packards, Studebakers, Chevys, Kaisers, Buicks, Fords, Mercurys, Cadilacs, Hudsons, and many more. I've never seen a Borg OD that broke that wasn't abused. Basically an R10 has three planetaries and an R11 has four. I agree with the Preacher in that I wouldn't put a lot of money in a T86 OD. If you like to tinker and can get them cheap you can make them work. By cheap I'm thinking scrap price, nothing to lose. There are good ready to use tranys out there for a good price. Borg ODs are a classic and fun approach to reducing engine wear and improving gas milage. Our inlines have much to gain from a good OD. Beater
