Welcome to the Michigan FBody Association website.
The Michigan FBody Association is a centralized website for FBody enthusiasts to discuss what's going on in the Michigan area. MiFbody.com was created to allow for an easy one-stop place to find out what's going on in Michigan as far as FBody events, to find out what clubs are available in your immediate area, and for an easy place to post classifieds for items you want to sell! Our goal was to create a more close-knit community of FBody enthusiasts in the state of Michigan, and to bring Camaro and Firebird enthusiasts alike together for some amazing FBody events!
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The GM 8.5in rear end is a 10 bolt, I believe isn't the 7.5in a 10 bolt also? So Since the 7.5/8.5" is the size of the ring gear is it possible to put a 8.5" gear in place of the 7.5" gear thus making the 10 bolt stronger?
12 bolt is 8.875" so its only .375" bigger then a 8.5" 10 bolt. The weakness from my understanding is that the 7.5" gear is small. Bigger gear more strength. So its almost the same size as a 12 bolt. Now the Dana 60 on the other hand is a 9.75". So a 8.5" would be similar to a GM 12 bolt in strength.
Originally posted by Yoshi94
Mines about an inch bigger than Kyles. I need to get one of those
Originally posted by ryanwarby01
Put it this way, if you have a money tree a LT1 is a wood chipper!
The major weakness in a 10 bolt is the case strength. Under high loads it flexes which makes the gear contact less that idea which eventually leads to failure.
I'd rock the 60 considering what people do to them for rock crawling, a 9" robs more power and is weaker. So the Dana 60 is like 100lbs more. I guess it would even out in the end but Dana > Ford.
Originally posted by Yoshi94
Mines about an inch bigger than Kyles. I need to get one of those
Originally posted by ryanwarby01
Put it this way, if you have a money tree a LT1 is a wood chipper!
Don't get me wrong, the S60's are nice but the 9" is way more user friendly when it comes time to work on it. It's hard to beat the simplicity of the 9" and the fact that it works so well and is one strong unit is a plus...also there is an absolute ass load of aftermarket goodies for it.
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