What are the spec's on the GTO rear-end

**gtobob** · 08-29-2005, 01:01 PM

Does any know the size and spec's for the GTO rear-end. I know the ratio is 3.46 but don't know the size and bolt type.

**Sarge** · 08-29-2005, 01:58 PM

Hey man...now I thought you had broken all of your rear end

Didnt you already replace your posi/drivetrain? Or was that GTODoug...hell I can't remember....

**gtobob** · 08-30-2005, 03:04 AM

No that was not me I just bust my rear-end getting to work and going home.

**Sarge** · 08-30-2005, 05:36 AM

Well......I am old and senile

I beleive the stock rear end is a 7.5 inch 10 bolt POS basically from a S-10...
Go Moser and be done with it

The Harrop Diff cover does significantly improve things...and subframe bushings should be good to go up to arounf 450RWHP....then your gonna need drive shafts / axles etc. It never stops does it

**gtobob** · 08-30-2005, 06:32 AM

Thanks I am looking to change out the Ring and Pinion gear to something different not really looking for it to handle more power. I am planning to stay below the 450 HP range and will not be drag racing the car.

**Rob** · 08-31-2005, 08:30 AM

10 bolt from S-10?

The rear gear is small, can't remember what it actually was as its been awhile. But is was 7-7.5 on the back side and another inch on the tooth side. About twice as thick as a GM 7.5" 10 bolt. Gear contact is also quite big.

They are extremely strong for their size. Many Monaro/Commordore's running 11's without problems. Some in the 10's too.

Diff Technics sells gears for this rear. They are not a sponsor over here so can't really give the url.

**Sarge** · 08-31-2005, 09:24 AM

Originally Posted by Rob

10 bolt from S-10?

The rear gear is small, can't remember what it actually was as its been awhile. But is was 7-7.5 on the back side and another inch on the tooth side. About twice as thick as a GM 7.5" 10 bolt. Gear contact is also quite big.

They are extremely strong for their size. Many Monaro/Commordore's running 11's without problems. Some in the 10's too.

Diff Technics sells gears for this rear. They are not a sponsor over here so can't really give the url.

I was making an hypothetical analogy to stress a point

They are rather flimsy stock....