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 1985 iroc z 
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Joined: Fri Apr 14, 2017 8:50 am
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Location: Woodstock ontario
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Post 1985 iroc z
Hey everyone. New to the site. Anyways I'm currently restoring a 1985 iroc Z and want aftermarket torque arm and cross member for a t5 . Any recommend brands etc? Having trouble locating anything on line that's worth venturing


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Fri Apr 14, 2017 11:44 am
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Joined: Tue Aug 01, 2006 4:33 pm
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Location: cooltown - OTTAWA!!!! ya!!
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Post Re: 1985 iroc z
Try UMI Performance's website and see what they have. They should have anything you need

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These cars are JUNK. And I own one.


Mon Apr 17, 2017 9:32 am
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Joined: Mon Feb 01, 2010 12:26 pm
Posts: 212
Location: Ottawa
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Post Re: 1985 iroc z
What about the Spohn stuff? I'd get the torque arm that mounts to the cross member or change your trans mount to the energy suspension one if you don't mind d vibrations or the 4th gen type so you don't tear the stock one apart.

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86 IROC
LQ4/T56/3.50 8.8 (next step..TC76)
Build thread: http://ls1tech.com/forums/conversions-hybrids/1819001-1986-iroc-turbo-lq4-t56-build-ac.html
Formerly 95 LT1 [LE2.2]/T56/4.11 9 Bolt..12.6@114MPH


Tue Apr 18, 2017 10:10 am
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Joined: Fri Feb 24, 2017 3:04 pm
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Post Re: 1985 iroc z
Hey, 'bout time you got on here! Car was looking/sounding nice on the weekend. Make sure you post something up in the new member's thread!


Tue Apr 18, 2017 10:29 am
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Joined: Sun May 13, 2007 10:48 am
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Post Re: 1985 iroc z
A poly transmission mount should have come from the factory on these torque arm cars, Do yourself a favour and be sure to get one of those as well. The stock trans mounted torque arm bracket is fine unless you are going to increase power substantially ( north of 400whp ) but I also recommend a poly torque arm bushing up front as well. Out back the stock rear lower control arms work fine if you box them in with some welded flat stock and use the 1LE ( high durometer ) bushings. We put these in the last build we did and they seem to perform every bit as well as the poly/tubular arms and dont have the same level of harshness. The stock panhard rod is poo, I would upgrade that as well. IIRC there was or is an outfit called founders performance or something like that who sold low price but decent looking suspension components for third gens. You'll probably have better luck checking out what the fourth gen guys run over at LS1tech as the rear suspension is identical between third and fourth gens.

thirdgen.org as well if you havent found that site yet is the biggest information resource for these cars. Have fun

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1987 IROC ww 99 LS1,TR224/112, STG2 heads ported by American Speed, P Gold springs, LS6 intake, SVO 30's, Ported TB, Comp Cromo Push rods, Katech Rod bolts, LS6 oil pump, T56, SW LT's, 8.8 hybrid rear 3.73, 275/40/17 MT ET streets, lots more
12.1 @ 112 mph 1.69 60'

89 R7U 1LE Players Challenge car all stock.


Thu May 04, 2017 8:32 am
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