| |
Click on image for the lowdown. 
====
| | | Forums66 Topics128,155 Posts1,056,868 Members48,456 | | 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!
| | THANKS!
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: Nov 2016 Posts: 57 'Bolter | | 'Bolter Joined: Nov 2016 Posts: 57 | So, we figured this possibly original axle is 4:57.
I'd like to drive it occasionally faster than 40 mph,
so - I've read changing just Ring & Pinion can be tricky
but I'm up for it. Swapping whole axle might be easier,
but the frame has that goofy angle, needing custom
brackets and welding. (no 220 or welder ... yet)
t h o u g h t s ? Looking for 3:23 kind of ratio.
I realize I'll also be doing bearings and shims and such.
1960 C20 Platform
| | | | | Joined: Jul 2016 Posts: 196 'Bolter | | 'Bolter Joined: Jul 2016 Posts: 196 | 323's are great. I have swapped ring an pinion many times. its doable just take your time
1961 apache
| | | | | Joined: Apr 2001 Posts: 7 New Guy | | New Guy Joined: Apr 2001 Posts: 7 | Are there any other R&P ratios even available for the old Eaton rearends? | | | | | Joined: Apr 2005 Posts: 2,101 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 2,101 | Do a search on the HO52 and HO72 rear ends. There is a lot of info here. The only gear set available for the corporate axle is a 4:10 from the 68-72 C-20's with an auto trans. Probably not much luck finding a R&P, likely need to find a used assembly.
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
| | | | | Joined: Nov 2016 Posts: 57 'Bolter | | 'Bolter Joined: Nov 2016 Posts: 57 | yeah ... it's a HO52.
Was afraid of that. Might just have to go
full axle swap. Shame, since this one in
good shape; just not happy with ratio.
1960 C20 Platform
| | | | | Joined: Apr 2005 Posts: 2,101 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 2,101 | You could leave the rear end and swap in an overdrive transmission.
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
| | |
|
|
| |
