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Click on image for the lowdown. 
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| | | Forums66 Topics128,034 Posts1,055,533 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: Mar 2010 Posts: 1,660 Curmudgeon | | Curmudgeon Joined: Mar 2010 Posts: 1,660 | Go to the Parts Wiki link. Dimensions are given for the front and rear bushings (slip and press fit). 1937 to early 50 are slip fit and doweled. 1950 later to 54 press fit and no dowels. Rear axle gears wear out and I imagine it's easier to swap out the axle and tube. Also the brakes changed from Huck to Bendix in 1951. http://www.gmpartswiki.com/getpage?pageid=121710
"Adding CFM to a truck will only help at engine speeds you don't want to use."
"I found there was nothing to gain beyond 400 CFM."
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