Ok, that’s a pretty obscure Bowie reference, but then a Borg Warner T10 4-speed is a pretty obscure box of gears today. You can only stare at something with that much potential, looking all greasy and rusty and sad, before you gotta recast your schedule and make it look its worth.

So into the truck it went along with the rebuild kit my loving spouse got me for Christmas (seriously ladies, no sweaters; buy car parts or wrenches and you’ll be amazed how often the trash and recycling get taken out).

This was a good project to take ’round to my friend Tom’s engine shop, given he has every tool known to man, a large heated workspace and experience rebuilding this very gearbox.
He shook his head at the price I paid. “A hundred and ten bucks?,” he said. “It was worth that 30 years ago.” A customer stopped over and he liked it too. When he heard the price, he said, “You stole it.”
We cracked the case and internals looked good–so good in fact that changing the oil might have been enough for another 50,000 miles. But my mission was a rebuild….


(This tool for removing the press-fit speedometer drive gear is handy.)
Things came apart pretty well, though those thick C-shaped snap-rings are tenacious. I pinched my hand pretty good with the handle when the snap-ring jaws slipped off the clip–but there’s no sympathy for non-permanent injuries here. Tom just says, “toughen up.”

Next step was to de-gunk. Fortunately, one of the tools on hand is a pressure washer. Every shaft, gear, housing and other metal component big enough not to fall through the cage floor got the pressure wash and solvent treatment. Bolts and smaller stuff just got solvent, and then polishing on a wire wheel. The wheel also zipped all the rust off the shifter rods.

It was a promising start–and fun, so time was in warp drive. The devoted half day sped by on afterburners with only disassembly and some cleanup checked off.Not sure why I thought this would be a one-day project. The brain cells behind that determination have been reassigned from Logistics Department to Beer Tasting.
There was more wrenching ahead. Stay tuned!…
Kris, you are aware that Hurst DOES make a Competition Plus shifter that will fit a BW-T10?
http://www.hurst-shifters.com/catalogpdf/2-Manual-Shifters/Appsmanlshft1.pdf
I’m thinking the one for the earliest Vette would fit your application well.
Much more solid and crisper than the factory units, which were pretty mushy, even when new.
Cool news, Dave. Thanks for the tip. I\’m keen on fitting my NOS one, but I don\’t want to cut any levers, and I\’m cautious about taking it apart–something the factory expressly discourages. (\’Course much more complicated fabrication has already gone into the distributor and Rover shift-lever remote.)
My Hurst for a \’66 Saginaw does bolt up but I haven\’t checked the levers yet. I think there\’ll be a conflict because they\’re in opposite order of size: the factory Buick\’s has the long lever furthest from the case extension, while my Hurst has it closest. May be I can mix and match rods and make something work, though the speedometer fitting is right there. If not, I\’ll see what it would take to make it work and if it\’s too extreme, I\’ll hunt down one like your link shows. I\’ll post a snap of mine shortly.
MotorMouth Kris Palmer, freelance auto writer and editor, blogs about vintage cars, the collectible auto scene and just about anything else that goes vroom.
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