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Click on image for the lowdown. 
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| | | Forums66 Topics128,056 Posts1,055,798 Members48,426 | | 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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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Apr 2005 Posts: 2,097 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 2,097 | As HRL stated 4 bolt side cover units are Muncie's even though some of them were made in the Saganaw plant. The transmission you have is likely from a Nova or Chevelle with the correct truck side cover. A 64-66 truck would have had a short tail housing. (except for overdrive units). GM changed the gear "pitch" in 64 and none of the internal components interchange with the 63 and earlier units. It may be a bit more "heavy duty" than the earlier transmissions as some of the gears are slightly wider. Fred
1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes 1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes 2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans 1947 Willys CJ2A w/F-Head engine
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