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Mod | | | Forums66 Topics128,119 Posts1,056,313 Members48,439 | | 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: Sep 2006 Posts: 8 Wrench Fetcher | | Wrench Fetcher Joined: Sep 2006 Posts: 8 | I have a 55.1 with stock torque tube rear end at 3.90:1 ratio. I have heard that a powerglide torque tube rear from a Chevy car can be installed as a bolt up to give a lower ratio and higher highway speeds. The only problem being that the axles have to be re-drilled for the six-lug bolt pattern. I have also heard that 6-lug axles exist for the powerglide rears as well. Anybody have any experience with this? It seems a cheaper and easier solution than Patrick's 3.55:1 gear set, especially since I have to find and use a '47-'53 carrier as the gear sets don't fit the '54-'55.1 carrier anyway.
thanks,
Andy | | | | | Joined: May 2001 Posts: 7,438 Extreme Gabster | | Extreme Gabster Joined: May 2001 Posts: 7,438 | A '55.1 should have an open shaft. | | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | There have been a lot of posts on this along the way & someone broke it all down a few weeks ago. The powerglde rear section will only fit the 46 on back trucks.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: Sep 2006 Posts: 8 Wrench Fetcher | | Wrench Fetcher Joined: Sep 2006 Posts: 8 | Yes, it is true that the 55.1 SHOULD have an open driveline, but mine does not as Chevrolet used up their torque tube setups before switching to the open driveline in early '55. | | |
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