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My 2000 TransAm



LS1GTP said:
And coming from the guy with a GT?

Do you just assume he doesn't have a faster car?
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Like I even care that my cars a gt? It's a Grand Prix. It'll never be anything special. My car is a cheap pos daily. And it performs that function well.
 
What vehicles came with a factory 12 bolt rear end anyway? I've never looked much into that. If this one breaks again I will see about getting one of those. I don't want to get into that now I just cammed the car, bought HP tuners and it still needs a few repairs. I can't afford a bigger rear now.


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Repairs BEFORE mods man..

12 bolts aren't that great, go with a 9" at least. But at that point, you might as well go with a strange dana s60 and never have to worry about it.
 


Just because they're a little heavier?

I wouldn't want a whiny rear end just to save a little weight going with a 9".
 
i hate fords, but the ford 9 inch rear is one of the best rears you can drop in a car with HP.

then again, my brothers 600 hp chevelle had a built 12 bolt gm rear, full posi carrier unit with 4.11 gears. it took a good beating. and he sold it when he crashed the car, so it still worked.
 
I thought the rear ends out of late model fords were an 8.8"? And it's a good amount of work to make those work and get the right bolt pattern rim in the back
 
I believe the 9" is from older cars, it's just the design though, the fbody 9" doesn't necessarily originate from fords.
 


asite57 said:
I thought the rear ends out of late model fords were an 8.8"? And it's a good amount of work to make those work and get the right bolt pattern rim in the back
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im pretty sure putting a ford 9 inch requires a lot of fab work, custom, tubes, and axles. you can buy a new 9 inch.

a built 12 bolt would be easier and cheaper in the long run.
 
my brother had 600 hp if not more on a 12 bolt rear. and he drag raced it with slicks, no failures. a full posi is a must. this was in a full curb weight 72 chevelle. not a light car at all.

back in the 80's that ran 600 or more iirc for the posi with the 4.11 gears, and the cost of a rebuilds labor at the shop. dont know what parts cost today tho. maybe more, maybe less.?

at the end of the day, the 10 bolt sucks a dick, and the 12 will hold up to his hp, im sure hes no where near 600 hp.
 
They sell bolt in 9" rears for fbody's.

For the money you're spending on the 12 bolt, you might as well go big or go home and get the s60.
 
asite57 said:
But he'd probably break a built 12 bolt
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scottydoggs said:
my brother had 600 hp if not more on a 12 bolt rear. and he drag raced it with slicks, no failures. a full posi is a must. this was in a full curb weight 72 chevelle. not a light car at all.

back in the 80's that ran 600 or more iirc for the posi with the 4.11 gears, and the cost of a rebuilds labor at the shop. dont know what parts cost today tho. maybe more, maybe less.?

at the end of the day, the 10 bolt sucks a dick, and the 12 will hold up to his hp, im sure hes no where near 600 hp.
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New school vs old school.

"Must prevent any possible failures and waste money."

vs

"Lets see if we can break it." Alternatively: "If it ain't broke, don't fix it."


LS1GTP said:
They sell bolt in 9" rears for fbody's.

For the money you're spending on the 12 bolt, you might as well go big or go home and get the s60.
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Take this next post seriously.

He might just have some experience going fast.

02 WS6 TA said:
9" FTW. I've never broken mine, and that's sayin' something. LOL

Oh, and S60s suck. Track fail.
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I read up on rear ends for a while (before I decided to sell the car) and I know the quirks of each. 9" just tends to whine a little even if you don't beat on it, while the s60 is heavier but won't whine.

They're both proven rear ends (and both cost around the same), I just prefer the s60.
 
It would have to be something that came in another car from factory. I can't have a full rear end shipped from the US. I'm not making that much HP up here. We are at 5000ft, my best guess is that it would be around 300 rwhp if I'm lucky. I never have used and I don't plan to use slicks so maybe I don't necessarily have to go for the absolute best.
 
Well plan to fab some stuff, otherwise 10 bolt is your only factory option. There's an 8.5 factory 10 bolt but that's basically just as useless as your 7.5.
 
Juanmiguel said:
It would have to be something that came in another car from factory. I can't have a full rear end shipped from the US. I'm not making that much HP up here. We are at 5000ft, my best guess is that it would be around 300 rwhp if I'm lucky. I never have used and I don't plan to use slicks so maybe I don't necessarily have to go for the absolute best.
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Your most definitely making more then 300whp these motors make 300whp+ from the factory lol you have cam headers ect
 
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