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Mod | | | Forums66 Topics128,024 Posts1,055,395 Members48,422 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
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| | | | Joined: Jan 2001 Posts: 687 Shop Shark | | Shop Shark Joined: Jan 2001 Posts: 687 | Chevy did make a 4 speed truck transmission that would fit jam up in your '64. It's a 3 speed with 4th gear being overdrive (and it's been talked about quite a few times in the past on the bolt).
It's called a New Process A833 transmission and the GM RPO code is "MY6". Not the best ratios, probably not as strong as the Super T10 or the heavier duty 4 speed Muncies, but a pretty good box.
The .73 overdrive makes for nice cruising on the interstates. I have one in my '66 shortbed stepside and it was a bolt in replacement for the old column shift 3 speed.
-ftyler | | |
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