Tommyv8

iTrader: (8)

How did you guys get Weld Prostars, Draglites or Rodlites (pretty much the same fitment IIRC) to fit over the stock calipers on your LS1 cars? This is mainly for the back wheels since the fronts are pretty easy to fit with just a small spacer. I'll have to put a different rear end on the car soon so this would be a good idea to decide how to get my 15x8 Prostars on there, or decide to just give up and sell them. I'm kinda leery about shaving my calipers down to the point that they may crack or accidentally grinding into the caliper pins and ruining them. I just put new pads on there so I know that makes a lot of grinding neccessary.

kierstyn

iTrader: (5)

Small spacer in the front and on the rears I painted the calipers and rotated the wheel then ground where it was taking the paint off until it stopped taking it off. Oh and i have ls1 brakes in case you are wondering why a lt1 guy is posting! lol

Tommyv8

iTrader: (8)

Did you have to take so much metal off of the rear calipers that it makes you nervous driving on them?

bongva

iTrader: (7)

do they not have certain drag lite setups that will fit an ls1 f-body?

SuperSam

iTrader: (7)

Grinded the hell outta the rear break clippers.

Pro Stock John

iTrader: (34)

We now have companies like Billet Specialties and Weld Racing that sell rims that require very little grinding and can hold up on the street. If you run a spacer in the rear you won't have to do much grinding but you won't much thread engagement with your lugs.

BriancWS6

iTrader: (18)

I ground my rears, used a 5/16 spacer for the front. I haven't been worried about the rears failing.

Squirts11

iTrader: (14)

I don't have prostars, but I thought this was a good read:

http://www.freewebs.com/casper9t9/dragwheelinfo.htm

^^Possibly a sticky?

LSWNDR

No offense to anyone on this forum guys, but honestly sometimes the answers that can have your project on hold for days until somebody with knowledgeable solutions to a problem decides to not think it's retarded to ask questions when thats what this site is all about information, trial, an error.... So with that being said i've been stuck in the same boat for awhile now with these damn drag lights, but i haven't given up on grinding out the solution so here is my progress.... Not completely finished yet, but......

kierstyn

iTrader: (5)

Yes it takes alot of grinding just use the paint on the calipers and rotate the wheel grind where it takes paint off. Paint and repeat! lol

95maroz28

iTrader: (21)

i ground just enough to get away with 7/32" spacers all around. you dont have to grind the front with 5/16" spacers but i did a little to run a smaller spacer.

Pro Stock John

iTrader: (34)

I ground enuff on my rears so I did not have to run any spacers in the back when I ran Draglites and then Pro Stars. Caliper was a lot smaller afterwards.

LSWNDR

Have any of you guys had any problems with your breaks since you've done this?? I'm not gonna risk it on the front since they do most of your stopping... So i put on a quarter in spacer in front. I'm gonna attempt to grind the rears completely though.

kierstyn

iTrader: (5)

Just do the spacer in the front with longer studs to compensate and grind the hell outa the rears. I run mine with no spacer in the rear also.

Tommyv8

iTrader: (8)

I meant to ask this as well: Are all of the grinding-related caliper failure horror stories that we read on here usually associated with the front calipers? I don't plan on grinding the fronts since a 5/16" spacer seems to work fine and I have 2.5" ARP studs on there, which are stronger and 1" longer than stock (5/16 of which is used up by the spacer but still a big improvement). I don't wanna weaken the brakes that do 70% of the braking. Are the rear brakes less prone to cracking since they only handle 30% of the stress?
BTW what part of St. Louis are you in LSWNDR?

I'm hesitant to put spacers on the back because that's where all of the torque is being applied, as opposed to the fronts which just hold the car up as it rolls along. Also, the tires would stick out a little with a spacer. I would have longer ARP studs on the back though, either 2.5" or 3.25". Think I would be OK with a good spacer (as opposed to the crappy universal Mr. Gasket ones I have on the front) and 3.25" ARP studs? I'm not really launching too hard at this point.

BOBS99SS

iTrader: (2)

Can somone tell me what backspacing I need to fit the fronts 15x7 or 15x6 and the rears 15x10 prostars maybe I missed it but I called summit and they didn't know sorry if it was posted and I missed it thanks guys god bless

Z28/2002

iTrader: (27)

You are not going to get a 15x7 or 15x6 to clear the front calipers


You need a 15x10 with 7.5" of backspacing for the rear

MATTREDSS

iTrader: (16)

I grounded and test fitted until had clearance. I'm using 1/4 spacer up front with no grinding and grinding the rear caliper with 3/8 spacer. I'm running 15x8 out back for the time being, eventually I will switch to 15x10s and run no spacer, going to have to grind some more.

kierstyn

iTrader: (5)

The amount of grinding for the ls1 brakes sucks it can be done but takes time. I changed my rearend and went back to lt1 brakes all the way around this time and it was alot less grinding like 15 mins. lol

Camaro396

iTrader: (14)

I used to run Prostars on my Camaro, but could never get the fear of knowing my Calipar was now paper thin out of my mind, so I sold them for some Weld RT wheels.

Welds RTS wheels will fit front AND rear with NO grinding, and NO spacers, so although it is recommended that you always use a hardened ARP stud with drag wheels, you can use your stock length wheel studs safely.