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Mod | | | Forums66 Topics128,110 Posts1,056,241 Members48,437 | | 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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| | | | Joined: Oct 2003 Posts: 5,152 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Oct 2003 Posts: 5,152 | The '54 235 would be a full pressure motor and the pickup version is the same length as the earlier motor. I'd call that '54 motor a good choice.
Since you have a '50 motor in the truck now, are you sure you have the original bellhousing and transmission in the truck now?
The later transmission is different both where it meets the bellhousing and inside. If you have the original transmission in the truck, and want to keep it, you need to stay with the original bellhousing. The early transmission does not have synchos and has a little lever on the shifter to allow shifting into reverse.
RustedNuts put an SM420 in his early GMC COE, he may come along and be able to tell you more about what that takes.
1955 1st GMC Suburban | 1954 GMC 250 trailer puller project | 1954 GMC 250 Hydra-Matic | 1954 Chevy 3100 . 1947 Chevy COE | and more...
It's true. I really don't do anything but browse the Internet looking for trouble... | | |
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