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Old 07-27-2013, 08:07 PM   #1
Pro Stock John
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18x9.5 40mm offset on the front

I bought a set of matching fronts for my car, 18x9.5 ZR1 replicas, 40mm offset.

Rears, just tied e brake cable back, 305/45R 18 Nitto NT05Rs:




I have Nitto 265/50/18's on the rims for the front



Did some work to fit them:

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13.15@106 1.95 | 100% Stock
12.37@112 1.85 | + Kooks Headers/Cats + 20" 555R + CAI + BW TB + UDP + Tune
12.06@113 1.70 | + CD 3200 + 18" NT05R + RCR Intake + NE OTR + GPI Tune
11.84@115 1.59 | + 3.91s + Race Star 17x7 Fronts
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Last edited by Pro Stock John; 07-27-2013 at 08:19 PM.
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Old 07-27-2013, 08:15 PM   #2
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Ground this down info from a sux2bu thread:



But the tire rubs strut





I think 5mm spacer might be enough just ordered it





So there you have it. I've seen one other guy run the ZR1/Z06 fronts, JacFab, I don't know what tires he had up front. But for this combo, can get the wheel to work, but the tires I have rub the strut assembly. I will try 5mm spacer, and if that's still tight I'll go 8mm and pay $70 from that place that custom makes them. I ordered some for $33 with free shipping (5mm).
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PROJECT HEAVY CHEVY
Camaro Now: Mods for the Masses Part I | Part II
13.15@106 1.95 | 100% Stock
12.37@112 1.85 | + Kooks Headers/Cats + 20" 555R + CAI + BW TB + UDP + Tune
12.06@113 1.70 | + CD 3200 + 18" NT05R + RCR Intake + NE OTR + GPI Tune
11.84@115 1.59 | + 3.91s + Race Star 17x7 Fronts
10.90@125 1.47 | + GPI VVT Cam + BW Ported Heads + CD 3800

Last edited by Pro Stock John; 07-27-2013 at 08:25 PM.
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Old 07-28-2013, 11:27 AM   #3
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I'm going to put some painters tape on the strut after I try the spacer. As I'll have 2 5mm spacers, I'll try one and if it's still scuffing I'll look at doing 10mm but I think 5mm might be enough I didn't hear them rubbing.
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PROJECT HEAVY CHEVY
Camaro Now: Mods for the Masses Part I | Part II
13.15@106 1.95 | 100% Stock
12.37@112 1.85 | + Kooks Headers/Cats + 20" 555R + CAI + BW TB + UDP + Tune
12.06@113 1.70 | + CD 3200 + 18" NT05R + RCR Intake + NE OTR + GPI Tune
11.84@115 1.59 | + 3.91s + Race Star 17x7 Fronts
10.90@125 1.47 | + GPI VVT Cam + BW Ported Heads + CD 3800
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Old 07-28-2013, 12:11 PM   #4
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It would have been a lot easier to pull the pads out, put them in a vice and cut the weights off there. That way you wouldn't have nicked the calipers.

Did you get a weight on the wheels or tires?
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Old 07-28-2013, 03:53 PM   #5
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Yeah I'd like to powdercoat the calipers anyway, maybe this will push me.

I can go outside and weigh a wheel + tire, brb.
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PROJECT HEAVY CHEVY
Camaro Now: Mods for the Masses Part I | Part II
13.15@106 1.95 | 100% Stock
12.37@112 1.85 | + Kooks Headers/Cats + 20" 555R + CAI + BW TB + UDP + Tune
12.06@113 1.70 | + CD 3200 + 18" NT05R + RCR Intake + NE OTR + GPI Tune
11.84@115 1.59 | + 3.91s + Race Star 17x7 Fronts
10.90@125 1.47 | + GPI VVT Cam + BW Ported Heads + CD 3800
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Old 07-28-2013, 04:01 PM   #6
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I'm getting 57.8 Juan.
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PROJECT HEAVY CHEVY
Camaro Now: Mods for the Masses Part I | Part II
13.15@106 1.95 | 100% Stock
12.37@112 1.85 | + Kooks Headers/Cats + 20" 555R + CAI + BW TB + UDP + Tune
12.06@113 1.70 | + CD 3200 + 18" NT05R + RCR Intake + NE OTR + GPI Tune
11.84@115 1.59 | + 3.91s + Race Star 17x7 Fronts
10.90@125 1.47 | + GPI VVT Cam + BW Ported Heads + CD 3800

Last edited by Pro Stock John; 07-28-2013 at 09:34 PM.
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Old 07-28-2013, 05:41 PM   #7
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Posted in the Free Wheel Offsets thread. Those are going to look slick once you get them on there.
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Old 07-28-2013, 09:37 PM   #8
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Thanks, they are tasty:



Jason, the spacers: http://www.ebay.com/itm/231018011293...84.m1439.l2649

I don't understand the toe out adjustment you said, never done that before. To answer your question, the tire and rim are not perfectly flush I can measure if you like. But the tire is not mega wider.
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PROJECT HEAVY CHEVY
Camaro Now: Mods for the Masses Part I | Part II
13.15@106 1.95 | 100% Stock
12.37@112 1.85 | + Kooks Headers/Cats + 20" 555R + CAI + BW TB + UDP + Tune
12.06@113 1.70 | + CD 3200 + 18" NT05R + RCR Intake + NE OTR + GPI Tune
11.84@115 1.59 | + 3.91s + Race Star 17x7 Fronts
10.90@125 1.47 | + GPI VVT Cam + BW Ported Heads + CD 3800
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Old 07-29-2013, 12:56 PM   #9
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Ughhh John. You know your business partner happens to be very good at Camaro offsets and information, right?

Friends don't let friends hack their cars up or run spacers. I have failed you.

Tony
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Old 07-29-2013, 01:31 PM   #10
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I like how the ZR1 wheels look but running a little spacer was not my plan. We'll see how this goes.
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PROJECT HEAVY CHEVY
Camaro Now: Mods for the Masses Part I | Part II
13.15@106 1.95 | 100% Stock
12.37@112 1.85 | + Kooks Headers/Cats + 20" 555R + CAI + BW TB + UDP + Tune
12.06@113 1.70 | + CD 3200 + 18" NT05R + RCR Intake + NE OTR + GPI Tune
11.84@115 1.59 | + 3.91s + Race Star 17x7 Fronts
10.90@125 1.47 | + GPI VVT Cam + BW Ported Heads + CD 3800
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Old 07-29-2013, 01:57 PM   #11
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So no spacers needed for the rear then? I smell my possible rear drag setup...where did you get them?(sorry if I missed it)
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Old 07-29-2013, 02:02 PM   #12
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No spacer in back, but you have to tie back the e-brake cable or it might rub on the edge of the wheel.
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PROJECT HEAVY CHEVY
Camaro Now: Mods for the Masses Part I | Part II
13.15@106 1.95 | 100% Stock
12.37@112 1.85 | + Kooks Headers/Cats + 20" 555R + CAI + BW TB + UDP + Tune
12.06@113 1.70 | + CD 3200 + 18" NT05R + RCR Intake + NE OTR + GPI Tune
11.84@115 1.59 | + 3.91s + Race Star 17x7 Fronts
10.90@125 1.47 | + GPI VVT Cam + BW Ported Heads + CD 3800
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Old 07-29-2013, 02:17 PM   #13
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I got mine tied back already from a little rub.
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Old 07-29-2013, 02:31 PM   #14
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27-30 range would have been a better front offset. You'll likely need a 10mm spacer to make them not look silly and tucked too far into the car.
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Old 07-29-2013, 02:36 PM   #15
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Cool good to know. Ordered 5mm, we'll see.
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PROJECT HEAVY CHEVY
Camaro Now: Mods for the Masses Part I | Part II
13.15@106 1.95 | 100% Stock
12.37@112 1.85 | + Kooks Headers/Cats + 20" 555R + CAI + BW TB + UDP + Tune
12.06@113 1.70 | + CD 3200 + 18" NT05R + RCR Intake + NE OTR + GPI Tune
11.84@115 1.59 | + 3.91s + Race Star 17x7 Fronts
10.90@125 1.47 | + GPI VVT Cam + BW Ported Heads + CD 3800
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Old 07-30-2013, 09:59 AM   #16
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Posted to me in a different thread:

Quote:
Originally Posted by ihada69L78 View Post
PSJ,[ATTACH][/ATTACH]

Thought I'd let you know what I found out about using 18X9.5 Vette wheels on the front.
I'm running square 295-45-18's on Grand Sport wheels. The section width is 11 3/16. I had the same problem with no strut clearance and went with AKATA 5mm spacers. I found two issues. The AKATA spacers I got last fall are 5 7/8" diameter and the wheel mounting pad is 6". Might not be a problem but I thought I'd make you aware of it. Biggest issue is that when you use a 5mm spacer you only have 4 and 3/4 threads of the lug nut on the stud. (DOT requires 6 threads on new manufactured products.) I used Gorilla 68148 ET lug nuts to get enough threads on the stud. Again, might not be a problem????
I've got some 3mm spacers ordered in hopes I can use the factory nuts since I think they are stronger than using ET nuts. I'm sure it would not be an issue if you only go fast in a straight line. In addition to the drag strip, I go to the road course occasionally.
Hope this helps.

IHADA69l78. Gary
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PROJECT HEAVY CHEVY
Camaro Now: Mods for the Masses Part I | Part II
13.15@106 1.95 | 100% Stock
12.37@112 1.85 | + Kooks Headers/Cats + 20" 555R + CAI + BW TB + UDP + Tune
12.06@113 1.70 | + CD 3200 + 18" NT05R + RCR Intake + NE OTR + GPI Tune
11.84@115 1.59 | + 3.91s + Race Star 17x7 Fronts
10.90@125 1.47 | + GPI VVT Cam + BW Ported Heads + CD 3800
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Old 07-30-2013, 12:11 PM   #17
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PSJ

Did you measure the section width of your tires yet?
The GM part # for 7mm longer wheel studs is 11588810, but the ET lug nuts is easier. Look at them and you'll see what I mean.
My 3mm spacers are supposed to ship today so maybe i'll know if they will work with the stock lugs by this weekend. 3mm spacers should be 1/8" clearance with an 11 3/16 section width tire.
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