As you can see I currently have a 5.3, 373 gear and a Radix.

This winter I"ll be doing a 6 litre or a 408 and will need more strength in the trans and rear. I'm planning a "built" 80 or 85 trans and 4.10 gears.

I'll do the gears and axle first and I'm wondering what to get. I see a lot of Eaton users. Why is that? Why not Strange or Mosher or????

I have no reason to not go for the Eaton but I'd rather buy because I know why to go in a certain direction and I'm curious who you recommend as a seller.

Thanks, Jim

 

Eaton is a manufacturer of differentials, and damn good ones. Strange and Moser specialize in axles and such, that is why you hear Eaton so much with the diffs. They are the best choice for the street IMO over say an Auburn.
As for gears, get the Motive Performance or OE GM gears. Both can be bought almost anywhere- Randy's, National Drivetrain, etc.

 

i have an eaton and motive gear 4.10's. this was the first and only time i've ever set up gears. i must say i did a good job. quiet as can be and i've been beating on it ever since.

 

Will 550 rwhp require larger than stock axle's? What rear do I have? 10 bolt, 12 bolt??

 

Just my personal experience - Toms Differentials.