Compatible Rear ends?

[paul63c10]

Well my rear end decided to off itself this weekend. The teeth have all broken off. I was wondering though what rear ends I could fit back there between the wheel wells. I currently have a 4.11. But I was looking to go with a 3.73.

Any input would be greatly appriciated. thanks guys.

[jimmydean]

A straight bolt in would be another coil spring 6 lug rear. But if you don't mind a little work and you are running 6 lug front, you could easily swap for a 70+ 4x rear if I'm not mistaken. Just need to weld on some spring perches. You can use your old axle to know where to place them on the new one.

[Rogue]

I put a '68 3.73 posi in mine.
Bolt in swap of the right width but still 6 lug.

[Captainfab]

Is your truck a C10 or a C20?

[junglefire]

Hey.. someone's parting a '68 in my area..

would a "3/4 ton Dana 60 Rear end" help me out?
i must have a high gear ratio in my stock '66 rear end.. it tops out around 55/60mph with a crate 350 engine.

http://orlando.craigslist.org/pts/2581464613.html

Originally Posted by Rogue

I put a '68 3.73 posi in mine.
Bolt in swap of the right width but still 6 lug.

[junglefire]

never mind. i just looked up the dana 60 and it would probably be worse than what i have.

[Captainfab]

Well that depoends on what you have now. Is your truck a C20 now? If so and if it has the Eaton HO52, you have either 4.11 or 4.57 gears. The 4.57's seem to be most common in my area. The Dana 60's in the '67-'72 trucks have gears from 3.54 to 4.11's. I have a Dana 60 from a '71 C20 that has 3.54 gears. I wouldn't rule it out until you can confirm the gear ratio.

In the CL ad it says he is parting out a '68 C10, but yet he lists a 3/4 ton Dana 60. Hard to tell just what he has. It could be a 6 lug Dana 60, which is very rare.

Originally Posted by junglefire

Hey.. someone's parting a '68 in my area..

would a "3/4 ton Dana 60 Rear end" help me out?
i must have a high gear ratio in my stock '66 rear end.. it tops out around 55/60mph with a crate 350 engine.

http://orlando.craigslist.org/pts/2581464613.html

Originally Posted by junglefire

never mind. i just looked up the dana 60 and it would probably be worse than what i have.

[paul63c10]

Originally Posted by Captainfab

Is your truck a C10 or a C20?

its a short step side. c10.

[Captainfab]

Well then there is no reason to look at 3/4 ton rear ends. What you have now is a 12 bolt, unless you have a GMC. Most all C10's from '63-'82 came with the 12 bolt. The rear ends from '63-'70 were of the 6x5.5" wheel bolt pattern. The '71-'82's had the 5x5" wheel bolt pattern, and were also 1.5" wider. Do you want to stay with the 6x5.5" wheel bolt pattern or are you wanting to convert to the 5x5" along with front discs? The 3.73 gears are failrly common. There were also 3.42's and 3.08's available in the factory 12 bolts.

Originally Posted by paul63c10

its a short step side. c10.