Question about Fitment for Iroc replica Rims
Joined: May 2009
Posts: 4,915
Likes: 41
From: Far West
Car: 1986 Camaro Z28 IROC-Z
Engine: 350 Tuned Port Injection, for now.
Transmission: 700R4
Axle/Gears: Posi - 3.23
Re: Question about Fitment for Iroc replica Rims
A PE1 wheel is the iconic 86-87 IROC wheel. Not sure is 85 had it. But you can further investigate on www.IROC-Z.com .
Joined: Dec 2005
Posts: 6,499
Likes: 31
From: Macon, GA
Car: 1992 Camaro RS
Engine: Vortec headed 355, xe262
Transmission: T56
Axle/Gears: 9-bolt 3.70
Re: Question about Fitment for Iroc replica Rims
They had it in 85. The 16 inch wheels were part of the IROC package in 85.
Joined: May 2009
Posts: 4,915
Likes: 41
From: Far West
Car: 1986 Camaro Z28 IROC-Z
Engine: 350 Tuned Port Injection, for now.
Transmission: 700R4
Axle/Gears: Posi - 3.23
Thread Starter
Supreme Member
Joined: Feb 2004
Posts: 1,581
Likes: 3
From: So Cal
Car: 89 IROC Z28
Engine: 357 TPI
Transmission: 700R4
Axle/Gears: 3.42 Posi
Re: Question about Fitment for Iroc replica Rims
WHAT!!!!!! If you don't know what is a PE1, well I'll just leave it as that. Besides, Mexicali has a lotta good shops. Where are you from, specifically?
To distinguish a 1986 IROC-Z on the street, they had a third brake light on the rear hatch at the top. They had the PE1 Aluminum Wheels. The double stripe just above the ground effects had the black stripe on the bottom. The IROC-Z door emblems were towards the front of the door under the sideview mirror.
No convertible was available in 1986
Leather was not an available fabric in 1986
The 5.7 Liter 350ci engine was still not available in 1986
All 305 TPI LB9 motors (1985-1992) came with one of two basic cams. An easy way to identify the type of cam on an LB9 car is to look at the tach: the lesser cams have a yellow line at 4500 and red line at 5000; the hotter cams have a yellow line at 5000 and red line at 5500.
To distinguish a 1986 IROC-Z on the street, they had a third brake light on the rear hatch at the top. They had the PE1 Aluminum Wheels. The double stripe just above the ground effects had the black stripe on the bottom. The IROC-Z door emblems were towards the front of the door under the sideview mirror.
No convertible was available in 1986
Leather was not an available fabric in 1986
The 5.7 Liter 350ci engine was still not available in 1986
All 305 TPI LB9 motors (1985-1992) came with one of two basic cams. An easy way to identify the type of cam on an LB9 car is to look at the tach: the lesser cams have a yellow line at 4500 and red line at 5000; the hotter cams have a yellow line at 5000 and red line at 5500.
Supreme Member
Joined: Jul 1999
Posts: 2,758
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From: Ahead of you...
Car: 1984 LG4 Camaro
Engine: 350 Roller Motor
Transmission: Level 10 700R4
Axle/Gears: Strange 12 bolt 3.42
Re: Question about Fitment for Iroc replica Rims
For reference, a 5" backspacing is the most you can run in the front, along with a 17" wheel (or a 18" that contacts the tie rod end). For the most part, aftermarket IROCs are 8" wide and have the same offset all around - which pulls the rear wheels out to the same points in the wells and helps handling by increasing the track width.
Joined: May 2009
Posts: 4,915
Likes: 41
From: Far West
Car: 1986 Camaro Z28 IROC-Z
Engine: 350 Tuned Port Injection, for now.
Transmission: 700R4
Axle/Gears: Posi - 3.23
Re: Question about Fitment for Iroc replica Rims
For reference, a 5" backspacing is the most you can run in the front, along with a 17" wheel (or a 18" that contacts the tie rod end). For the most part, aftermarket IROCs are 8" wide and have the same offset all around - which pulls the rear wheels out to the same points in the wells and helps handling by increasing the track width.
Supreme Member
Joined: Jul 1999
Posts: 2,758
Likes: 11
From: Ahead of you...
Car: 1984 LG4 Camaro
Engine: 350 Roller Motor
Transmission: Level 10 700R4
Axle/Gears: Strange 12 bolt 3.42
Re: Question about Fitment for Iroc replica Rims
If you go higher than 5" backspacing on the front, it will hit the tie rod ends. Some 18" wheels will tuck the rod ends into the barrel making higher BS possible. When you run the same BS all around, it brings the rear wheel track out (wider) as the factory wheels have different BS front to rear...
Joined: May 2009
Posts: 4,915
Likes: 41
From: Far West
Car: 1986 Camaro Z28 IROC-Z
Engine: 350 Tuned Port Injection, for now.
Transmission: 700R4
Axle/Gears: Posi - 3.23
Re: Question about Fitment for Iroc replica Rims
Ok. Now I see. So in other words, I can get 16" IROC replicas and install them and everything will be fine, other than the read wheels sticking out slightly more than the front wheels right?
Joined: Dec 2005
Posts: 6,499
Likes: 31
From: Macon, GA
Car: 1992 Camaro RS
Engine: Vortec headed 355, xe262
Transmission: T56
Axle/Gears: 9-bolt 3.70
Re: Question about Fitment for Iroc replica Rims
Emphasis on slightly. Every car with aftermarket IROC wheels will 95 percent likely have the same offset front to rear - can you tell the rears stick out? I sure cant.
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From: Central Texas
Car: GTA
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: Aussie 9-bolt/3.27 posi
Re: Question about Fitment for Iroc replica Rims
Junior Member
Joined: Dec 2010
Posts: 49
Likes: 0
From: Whitney, TX
Car: 1987 IROC-Z
Engine: 383 stroker, 1st F.I. TPI
Transmission: 700R-4. Modified to handle engine
Axle/Gears: 10 bolt 3.42 posi
Re: Question about Fitment for Iroc replica Rims
I'll only have them that way for another week. That's when the 17's arrive.
Joined: May 2009
Posts: 4,915
Likes: 41
From: Far West
Car: 1986 Camaro Z28 IROC-Z
Engine: 350 Tuned Port Injection, for now.
Transmission: 700R4
Axle/Gears: Posi - 3.23
Re: Question about Fitment for Iroc replica Rims
I have 0 offsets on mine. I'm running 245/50's all the way around. They are inside the fenderlip 100%. Nothing sticks out. AND, I can rotate them. That's a big plus when you have a daily driver.
I'll only have them that way for another week. That's when the 17's arrive.
I'll only have them that way for another week. That's when the 17's arrive.
Junior Member
Joined: Dec 2010
Posts: 49
Likes: 0
From: Whitney, TX
Car: 1987 IROC-Z
Engine: 383 stroker, 1st F.I. TPI
Transmission: 700R-4. Modified to handle engine
Axle/Gears: 10 bolt 3.42 posi
Re: Question about Fitment for Iroc replica Rims
Where are you? I'm in Texas, near Waco.
Joined: May 2009
Posts: 4,915
Likes: 41
From: Far West
Car: 1986 Camaro Z28 IROC-Z
Engine: 350 Tuned Port Injection, for now.
Transmission: 700R4
Axle/Gears: Posi - 3.23
Re: Question about Fitment for Iroc replica Rims
Southern California.
Thread Starter
Supreme Member
Joined: Feb 2004
Posts: 1,581
Likes: 3
From: So Cal
Car: 89 IROC Z28
Engine: 357 TPI
Transmission: 700R4
Axle/Gears: 3.42 Posi
Re: Question about Fitment for Iroc replica Rims
What part of SoCal? I'm in Orange County. Why are you on probation?
Joined: May 2009
Posts: 4,915
Likes: 41
From: Far West
Car: 1986 Camaro Z28 IROC-Z
Engine: 350 Tuned Port Injection, for now.
Transmission: 700R4
Axle/Gears: Posi - 3.23
Re: Question about Fitment for Iroc replica Rims
WAY down south. Remember the 2010 7.2 Easter Earthquake in Baja California? Right there, In the Imperial Valley. As for the probation, well its a long story. Let me put it like this,,,, I ask the Big Man a question, he repllies quick. I ask him another question, and BOOM!!! He answers quick. But when I ask him if he can remove me since Ive been on good behavior for several months already,,, I get no reply. Ive asked around 5 times if i can get my probation removed and he wont answer me. I think he is just waiting for me to mess up so that he can have a good reason to ban me.
Junior Member
Joined: Jul 2010
Posts: 53
Likes: 0
From: CaLi
Car: 1989 iRoC-Z, 1991 Rs
Engine: L98, L03,Lsx swap soon
Transmission: 700r4
Axle/Gears: G92 3.27,10 bolt 3.23
Re: Question about Fitment for Iroc replica Rims
Did you ever lower the rear?! Curious to know if they rubbed and if you have any pixs would be nice
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Joined: May 2007
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Re: Question about Fitment for Iroc replica Rims
Anybody know anything about these rims:
http://customwheelsmarket.com/18irchwhri.html
They they have a
Wheel offset: 0mm, Wheel Backspacing: 4.50".
Direct fit - No spacers or modifications required
I know the front and rear have different backspacing on my IROC, but theirs are the same for both.
Do they look right when mounted? Just curious i don't much about rims in general.
Thanks in advance
http://customwheelsmarket.com/18irchwhri.html
They they have a
Wheel offset: 0mm, Wheel Backspacing: 4.50".
Direct fit - No spacers or modifications required
I know the front and rear have different backspacing on my IROC, but theirs are the same for both.
Do they look right when mounted? Just curious i don't much about rims in general.
Thanks in advance
OK.. I have read all about the rims.. But what size tire are you going to run?
I ask because I like those rims as well.
Thanks.
Joined: May 2009
Posts: 4,915
Likes: 41
From: Far West
Car: 1986 Camaro Z28 IROC-Z
Engine: 350 Tuned Port Injection, for now.
Transmission: 700R4
Axle/Gears: Posi - 3.23
Re: Question about Fitment for Iroc replica Rims
$190 per rim. Ummmm. I'll stick with my PE1's.
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