[william27103]

picking the differential for my camaro

1980 camaro
383 stroker (410 - 450 horsepower range)
bowtie overdrives 700r4 trans
original gm 10 bolt in the car (non posi)

I want to go with a limited slip posi
and with 3.55 or 3.73 gear ratio

can anyone recommend a unit that would do the job

it's a street car that will probably driven quite a bit

Thanks,
Will

[Deuce]

I would change rear ends.......completely

A 9 inch Ford is the perfect rear end ......Strong, easy to work on and plentiful. You have spent $$$ on the OD, the engine and now The rear end......

The center section drops out the front ....so gear changes are simple....and I always have a few to choose from. Drilling the GM 5 on 4.75 wheel pattern is simple ( if you want the stock Camaro pattern........most wheels like Weld have two patterns ) And the Camaro is leaf springs so.....it is a easy conversion. There are lots of 9 inch Fords as narrow or more so than the Camaro.....


DEUCE

[william27103]

if i go ford 9", i'm probably going to buy a currie rear complete with new axles and go ahead and do a conversion to rear disc brakes, which i have a bunch of questions about that too, but i'll ask when i get there.

thanks for the advice, i was trying to talk myself into going to the ford 9" anyway

[brainsboy]

I have a detroit locker in my ford 9" and love it, no clutches to wear out, and has been holding up to 500+hp. The Ford limited slip units never seem to last very long for me.

In fact I also have a Aerospace Engineering aluminum disk brake set-up im not using, if your interested.

[Deuce]

Originally Posted by william27103

if i go ford 9", i'm probably going to buy a currie rear complete with new axles.

Currie makes good stuff.....no doubt..
I have had excellent results in a street car with Factory Ford stuff.

I have used a 65 Ford passenger car rear end housing and 31 spline axles. Sent the Housing out the be marrowed ( I use Moser Engineering but there are LOTs of choices ) and respline one axle and end up at 56 inches



56 inches measured this way...
With a Detroit Locker ....my BigBlock Nova ( 3200 lbs. ) and a 4 speed could not kill it. The Nova went high 10's in basically street trim but with 10 inch slicks...

The cost of narrowing a housing is around $125 and the respline axle cost is $75 ...so for $200.......plus the center section......you can be good to go...

[M&M CUSTOM]

And you will like the 3.73 with the power you will be able to put down, along with the overdrive of the 700R4 giving you pretty decent mileage too.

I run the same combo in my car, and it chirps the tires on hard acceleration upshifts while giving me an average of 19 MPG too.