Putting the truck to work...and gear/trans question!

[Jobe72]

Quick shot of me putting the ole' truck to work...hauling a 63 caddy carcass.

The truck is bone stock with 350/350 and 3.07 gears.
How hard is it to swap to 3.73's?
Also might be interested in a 700r4 swap, is this pretty simple or require alot of mods?

Thanks

Bryan

[martindc1]

The gears aren't too hard, depends on how greasy you feel like getting. You might look around for somebody w/ a 3.73 truck who wants to trade you rear axles. For instance, if you lived in Ohio I would entertain the idea haha.

[Jobe72]

What is involved in changing gears? I've never done it obviously. Is it just a center section replacement or pull both axles out as well? I'm guessing the latter...but...

[cdowns]

it's a very delicate precise job requireing some special tools// factory service manuals have step by step instructions aaas well as the tool list//factory service manuals are available thru most board vendoes very cheaply priced for nice reprinted books

if you dont do it right the first time you can trash about $500 worth of parts

[Fitz]

Originally Posted by Jobe72

Quick shot of me putting the ole' truck to work...hauling a 63 caddy carcass.

The truck is bone stock with 350/350 and 3.07 gears.
How hard is it to swap to 3.73's?
Also might be interested in a 700r4 swap, is this pretty simple or require alot of mods?

Thanks

Bryan

There's fewer moving parts in a diff than in your lawn mower and it isn't hard to set one up correctly, but it has to be done carefully. First one I did took all day. Now I can disassemble, set one up and re-assemble it in about 2 hours. The GM factory Service manual for your model year will show you how to do it. The manual covers C-10 through C-50 and covers the two speed axle as well as the conventional diff. The manuals are available on e-bay
and several automotive bookstores for 20-30 bucks and is well worth the investment.

This is a GM pub, not a Chilton's, Haynes or any other aftermarket crap and looks like this: