Manual to Auto Differential Conversion
 

I tried searching under various terms, and couldn't find it.

Anyhow, I want to convert from a the manual 4.10 to the auto 3.9.

Is it at direct swap?

If it isn't, would it be easier to convert, or swap the ring&pinion?

Is there an aftermarket source for gears?

Thanks!

It should be a direct swap. I just dont know why you would want to do it.

well i try to keep it under the hat, since there are some haters, but i did an LS1 swap. with the added torque 1st gear is worthless, and 2nd gear almost as bad(spins the entire time, this is with 275s in the rear). I think I could actually get better ETs, and improved MPG with the 3.9.

Hell I might be wrong. I might be better off just getting some stickier and wider tires.

I don't have an answer but have you looked into something like Jimlab's Cobra IRS swap?

yes I have, and i am seriously considering the Cobra IRS for the future. I was just thinking of doing this in the interim. I am not big into drag racing, that is why I am not going straight to the Cobra diff.

Ah gotcha. Have you read up on the auto-to-manual conversions? I would imagine there would be relevant commentary there (even if it is going the other way). Link in the FAQ thread.

good call. i will read into it. most likely a lot of it will apply in reverse. :D