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Yeah I get what you're saying I got mine because I was looking for a posi and I figured if I found one might as well be a upgrade from the 7.5 can't complain to much I paid $400 and it came with a new set of gears. No one likes a one wheel peel

Pontiacgp I had a 81 cutlass before I got my 87 and I ran a 255/60/15 in the rear with a 3.750 back space on a 8 wide rim with no clearance issues at all but for my 87 after I swap the 7.5 for my 8.5 imma get torque thrust 2's now could you answer this for me I wanna run a 255/60 or a 275/60/15...

I have a 87 cutlass with a gn 8.5 rear if that matters imma run a 15x8 rimin the back with either a 255/60 or 275/60 tire what would be my ideal back spacing without rolling the fender lip or rubbing and imma run a 15x7 possibly 8 in the front with a 235/60 what would be a good back spacing for...

Yeah they go for the same amount here that's why I started doubting if it was a posi or not. The guy I bought off of said "back in my day they were going for $600-$800 I don't know what they're worth now" I told him rebuilt ones or good ones go for about $1,000-$1400 from what I found so far

I didn't find it either I just got lucky and put a ad on Craigslist and some guy that needed money to move had it he also had a few 9's for like $500-$600. I really wasn't trying to brag or anything everything I read on the codes are back and forth one forum will say that the 8.5 gu6 3TJ code is...

Nah not bragging haha I just keep needing reassurance on everything I doubt myself to much and I bought it a few months back. And the guy I bought off of had it in a regal it has 4:11's in it right now and the code on the axle is gu6(I think) 3tp everything I looked up says 8.5 3:42 he gave me...

awhile back I bought a 8.5 that came with new 3:42 gears for $400. Now the axle reads 3TP I looked it up now my question is that a posi rear end? If I spin the tire both spin in the same direction so I'm sure it is just need some reassurance thanks

My engine guy talked to me about the compression I just told him just keep me away from race gas and then the next day he called and said its gonna be 11:1 and I won't be able to run any less than 93 octane and up so I said alright that'd be fine. I was gonna do aluminum heads but didn't have...

Alright I have a few questions so here's the first I'll start with my build 1968 350 olds .030 over Speed pro forged Pistons with 2 valve reliefs Block has been decked heads have been shaved not sure how much Comp cams roller tip rockers and valve springs Olds big block valves with a 3 angle...

Just out of curiosity anyone have any idea what the stock bob weight for a 1968 350 olds with all stocks parts is

Yeah I plan on racing it like my one post said it'll be more like a weekend warrior and to the track car I'm not sure what I want it to run I didn't have a exact number to aim and you're right when you said I was building the engine around the cam I had a lot of the parts already before I took...

I'm pretty sure I can't go any lower than 10.25:1 on the cam and the spec card from comp cams doesn't tell me

The main use for the car is just street or strip nothing major and my engine guy said he's gonna have me at 11:1 and to run only 93 or up which I'm not complaining the most it'll be driven at one time is to break it in and after that it'll just be a weekend warrior or car show car not gonna be...

I know I asked this before but I have more information this time so I'm wondering what kinda hp I'll have Specs: 350 olds .030 over Speed rpo forged pistons with 2 valve reliefs #5 heads 3 angle valve job shaved and big block valves 307 bronzed lined connecting rods (for nitrous) Stock polished...

My tag reads 461-2183AA1207 it looks like

How do I find out what model it is all I see is a big 424 on the bellhousing

I was wondering how much hp can a stock 200r4 transmission handle

Yeah that don't look bad and nice car I think that's what imma do

Yeah I know I never like tires sticking out of the wheel well that's why I figured a inch or inch and a half wouldn't look so bad but yeah I might just do the 275's I mean they looked pretty good on it before but the tires where dry rotted and rims were bent I'm surprised it made it all the way...

I have a 81 cutlass supreme when I first bought the it had 275/60/15 tires on the back I wanna know what's the widest tire I can go with Idc if it sticks a inch or inch and a half past the wheel well but just no to much and need a idea with what backs pacing to go with on rims right now I have...