camaronut502

Ive tried searching but didnt really find a straight answer.....Im wanting to try these tires out but dont have a narrowed rear, is it a pain in the *** to get them to fit on a 2000 t/a? What exactly would it take, i know some beating of the inner fender, andything else? Also what back spacing on a 15x10? my calipers are already ground down to fit some previous 15x10's. Thanks for the help fellas!

--Matt

ATVracr

iTrader: (5)

15x10 with 7.5 backspace

cut the bump stops off.

worked fine for me, my rear is stock length.

Josh@KY-Turbo

iTrader: (120)

I am doing the same setup on my car. 15x10 Prostar's with a 7.5 BS. I cut the bump stops off and bought a setof Aerospace drag brakes. I am still waiting on the brakes to show so I can get it back o the ground.

Pro Stock John

iTrader: (34)

http://psj.ls1tech.com/gallery/main....d=10&g2_page=4

If you look on page 4 and 5 of my pictures, I have 28W's and 325 DR's on 15x9.75 Bogarts with a stock length rearend. I have some clearancing here and there, and the bumpstops are cut off.

If you run 15x10 7.5 Welds, you will have more inner clearancing because Welds tuck in MORE. Bogarts sit out a bit more, and that extra centimeter or two out makes a difference. On the flip side, you might have to roll your fenders with 325's + Bogarts, I did. Bogarts are like 7.25 backspacing I think.

gator's 99TA

iTrader: (2)

like others said. it fits. narrowing the rear makes it MORE difficult to fit the big tires.

Beaflag VonRathburg

iTrader: (176)

What made you decide to switch to the radials?

PS: What are the dimensions of your intercooler?

lisa33

Didnt cut the bumerstops, just a hammer and hammer....
http://www.nonameracing.se/photos/de..._Tullinge_06-1

juicedSS

iTrader: (18)

should have mine on this weekend or next week sometime if ya wanna swing by and look at them

camaronut502

Thanks for the info guys, backed up what i was thinking.

--Matt

Pro Stock John

iTrader: (34)

I have not switched per se, I have one set of each. But I plan to run in the GM LSx drag radial class this October so I wanted to try out a set.

My intercooler is a Griffin, www.LS1Speed.com can source them.

RUQWIKR

iTrader: (11)

Remember, on a "stock width" rear, there are two different widths in our cars. The mount points are the same on the LT1 vs. LS1 cars, but the axle housing is 1.5" per side NARROWER on the LT1 cars vs. the LS1 cars, unless you ordered an aftermarket rear with a different width than meant for your car.

I bought my 12-bolt from a friend (LS1 width), but if I was ordering, I'd order the LT1 width or narrower for a bit less weight plus more wheel backspacing options. No spacers, but no bumpstops, either. Wheels are 10" with 7" backspacing. Even with these 5-year old DR's, I have been in the 1.2x's with them!

Take care. Dave

Pro Stock John

iTrader: (34)

Dave, are you saying the 93-97 LT1 F-Body rears are narrower than the 98-02 LS1 F-Body rears? If so, I must disagree. The THIRD gen rears, 88-92, are 1.5 inches narrower than the Fourth gen rears.

RUQWIKR

iTrader: (11)

John, you are probably right, but it's 1.5" per side...it's been too long since I had an LT1 car (95 T/A)...either way, my point still stands on if I was ordering a rear for my car that I would go with the narrower version (or even more so)...thanks for the clarification. Take care. Dave

xpndbl3

iTrader: (23)

i thought third gen rears were 2 inches narrower per side, as we'd run 15x10 with 5.5" bs for a similar sized tire, although I'm looking for a tucked look and trying to run 6.5" bs since weld doesn't offer a 6" bs and besides bogarts I don't see any other company offering it either.

RUQWIKR

iTrader: (11)

I would have placed a bet saying the LT1 4-th Gen were the 1.5" per side narrower until John confused me or corrected me, which either is not hard to do. Strange Engineering shows "early" being 1.5" per side narrower than "late" rear ends for its bolt-in 12-bolt.

It shows 61.72" from axle face-to-axle face, outboard side, for the "early" rears and 64.72" for the "late" rears. Somebody go measure their stock LT1 4th-Gen rear and a stock 3rd-Gen rear to settle this unless someone knows for sure. Alternative measurement for their rears is to the end of the axle tubes (56.24" for the "early" and 59.24" for the "late" rears) - without the brake caliper mounts installed.

Not arguing, just want to properly realign the limited number of tidbits of trivia and other useless, and sometimes, useful information within my brain. Take care. Dave

cwaldt

iTrader: (4)

It was a little bit of work. But I don't think I did anything I wouldn't have done had I not narrowed the rear. Obviously it is well worth it to get the tires under there if you have the power to turn them.

Pro Stock John

iTrader: (34)

All 4th gens have the same length rearends and same mounting points for the suspensions. The only difference is that some years and models have different axles which relate to whether the car has traction control.

RUQWIKR

iTrader: (11)

Yep on the mount points like I mentioned above...now go get back on the dyno!

Lonnies Performance

iTrader: (16)

Early means 3rd gen 82-92 F-body. LT1 & LS1 only differ in the brake setups.

gator's 99TA

iTrader: (2)

we have put a rear that was spec'd for a 98 ls1 and put it in a 96LT1 camaro and it fit perfectly.