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| | | | Joined: May 2023 Posts: 443 'Bolter | | 'Bolter Joined: May 2023 Posts: 443 | I'm going to need to replace my ring and pinion and as most know the options are limited..
I've got a 4 speed tranny and was wondering what is a good gear ratio so it can cruise fairly well..
Looking at a 3.55:1 and a 3.90:1
what are pros and cons or options.
Thanks for any help to this backyard mechanic
1954 Chevy 3100One problem solved doesn’t seem to shorten the list Montgomery, ALIn Project Journals | | | | | Joined: Feb 2021 Posts: 98 'Bolter | | 'Bolter Joined: Feb 2021 Posts: 98 | Its going to be hard to find a 3:90:1. I was lucky to find a NOS 3:90:1 on eBay, I need that particular ring and pinion because the truck is 4 wheel drive and it needed to match the front differential. | | | | | Joined: May 2015 Posts: 11,150 Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums | | Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums Joined: May 2015 Posts: 11,150 | Your stock ratio is 3.90:1 (but your R&P look bad). In order to use a 3.55:1 gear set, you'll need a differential case from a 47-53 1/2 ton truck. The optional 3.55:1 gearset won't fit on your differential case.
Kevin 1951 Chevy 3100 work truckFollow this saga in Project JournalPhotos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together. | | | | | Joined: May 2023 Posts: 443 'Bolter | | 'Bolter Joined: May 2023 Posts: 443 | Thanks for the info. I’ll see if I can find a 3:90
Ps: found a used good condition 3:90 on eBay and ordered it. Said it came out of a 54 3100 and had been stored for about 30 years. Fingers crossed.
Last edited by T-Doug; 06/25/2023 12:23 AM.
1954 Chevy 3100One problem solved doesn’t seem to shorten the list Montgomery, ALIn Project Journals | | | | | Joined: Oct 2021 Posts: 6,941 'Bolter | | 'Bolter Joined: Oct 2021 Posts: 6,941 | The wonders of modern technology. You located the part almost instantly and will have it in a week or less. How did anybody restore antique cars before the internet?
You'd have been reading Hemmings for maybe months, calling everybody in local and national Chevy clubs, writing letters and posting want ads, and traveling around the country to swap meets. Maybe you'd get the part you needed in 6 months or so.
1950 Chevrolet 3100 (Ol' Roy)
1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)
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