3.7 ratio diffs

**GFORCE1320** · 01-29-2009, 09:31 AM

Who would be interested in some 3.7 ratio diff assemblies?
These would be the complete center sections ready to bolt in (case, diff, gears, ect..)
I still need to get a good shipping cost, price would be right at about $1,000. before shipping.

Thanks
Chris

**r33pwrd** · 01-29-2009, 09:32 AM

If 3.7 is thought to be a good ratio im in...

**99-LS1-SS** · 01-29-2009, 09:38 AM

It's the ratio that the manual transmission GXP's have. The automatic GXP's have the 3.27. Whether it's a good ratio or not depends on what you are looking for.

**GRRRR8** · 01-29-2009, 09:40 AM

For a M6 it is. Very steep for an auto in a DD. Probably OK with a 28in tire in a highly modded N/A car. 3.27-3.45 would be a better choice.

**GFORCE1320** · 01-29-2009, 10:26 AM

The 3.91 and 3.73 ratios are popular in the GTO world, both in the auto and manual cars.

**r33pwrd** · 01-29-2009, 10:29 AM

so dumd question... do the GXP and GT share the same rear diff housing?

**GFORCE1320** · 01-29-2009, 10:33 AM

I dont see why the wouldnt. If they come out with a different diff housing then it would explain why GM is broke, LOL

**GRRRR8** · 01-29-2009, 10:48 AM

The G8s have a 4.02 1st gear ratio with a 6 speed auto. The housings are the same. GXP gets 3.27 with the A6 and 3.70 with the M6.

**GFORCE1320** · 01-29-2009, 10:53 AM

I hope to have these on my web site within the next day or 2. I just need to get the shipping cost locked down.

**GeorgeInNePa** · 01-29-2009, 11:46 AM

They have to be 3.70s? You'll move 3.27s and 3.45 much quicker.

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