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Click on image for the lowdown. 
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| | | Forums66 Topics128,034 Posts1,055,547 Members48,425 | | 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
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Sep 2009 Posts: 35 Apprentice | | Apprentice Joined: Sep 2009 Posts: 35 | I have the original tranny it has a smaller hole for the bell housing I was going with the sm456 as I thought this would be an ugrade from the original but upon my research I found the improvement was only minor rather than a crucial upgrade. thanx | | |
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