neogenesis2004

iTrader: (12)

you and kurt rohmer been havin butt secks?

olderguy

iTrader: (19)

I would think seriously of moving the intake filter up into the trunk and maybe cut louvres of some sort to let a lot of air in. A deep puddle or driving in heavy rain will fill the system(and motor) with water.

cjernigan

iTrader: (13)

Water injection?

y8s

iTrader: (8)

pontiac?

TurboTim

iTrader: (9)

Thanks for the concern Bruce. I was told not to touch that as the owner "spend hours" doing it. It's a strictly drag race car anyways, if he's racing in rain then something more important is wrong. And the trunk is full of really trick fuel system components.

yah matt it's an '04 GTO. It goes somewhere in the 8's at some insane boost level. See what you coulda done Philip?

Philip

and destroyed diffs left and right, fun.

magnamx-5

iTrader: (7)

He probably runs a 9 inch in there at that power level or better.

Philip

a 9 inch what? It would have to be a complete custom subframe as the GTO diff is unique.

magnamx-5

iTrader: (7)

well never mind that is a 12 bolt. Maybe with some good gears and cryo it will last a few passes.

Philip

very limited selection and very expensive, about 600 bucks for a gear set unless someone else has or does decide to make gears for them, but I doubt it since the car ran for 3 years and was DC'd.

TurboTim

iTrader: (9)

Yeah it is a custom subframe, you can see it in the first picture.

While there's not as may ratio choices as a 9 inch, there's still plenty of ratios available for the 12 bolt.

According to DTS (Drivetrain Specialists):
The 9 inch is much heavier than the 12 bolt, but not much stronger. The additional pinion support bearing adds a lot of weight but not much more strength. 12 bolt ring gear is 8.875" compared to, well, 9" in the 9 inch, so there's not a huge difference there. 12 bolt cost less than an equivalent 9 inch.

DTS says they could build a Dana 60 for a lot less money than the 9 inch while being much stronger and weighing roughly the same. It has a 9.750 ring gear.

This guy has "many" (not sure the number) passes on that 12 bolt gearset. He's already on his second turbo.