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Old 02-15-2008, 09:18 PM   #1
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Join Date: Feb 2007
Location: anderson ,sc
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Car: 89 formula
Engine: carbed 350
Transmission: t5
Axle/Gears: 3.73 posi

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1988 iroc?
did all 1988 l98 iroc come with posi rearend? and with drum brakes?
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my daliy driver is a 89 formula 350 with 9.75 cr ,195 trick flow heads, xe274h cam, holley intake, holley 750dp, t5, posi 3.73. best of 12.985@ 102 cutting out. sunday drive run on bald street tires 14.0 @104.95.
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Old 02-15-2008, 09:31 PM   #2
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Location: NC johnston co
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Car: 1988 IROC-Z
Engine: 350 TPI
Transmission: 700r4
Axle/Gears: 2.77 posi stock

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Re: 1988 iroc?
nope they can be either a limited slip or a full posi and both iroc can come with disk or drum..
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Old 02-15-2008, 09:35 PM   #3
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Car: 89 formula
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Re: 1988 iroc?
Quote:
Originally Posted by alpine247 View Post
nope they can be either a limited slip or a full posi and both iroc can come with disk or drum..
did any come with one wheel peel>?
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Old 02-15-2008, 09:44 PM   #4
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Re: 1988 iroc?
My RPO code says G80 2.73 AXLE POSITRACTION, LIMITED SLIP
lol which one does it have? For some reason its a one legger though. so either someone swapped it out or maybe the posi unit is bad?
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Old 02-15-2008, 10:17 PM   #5
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Car: 1984 Toyota Supra
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Re: 1988 iroc?
Quote:
Originally Posted by alpine247 View Post
nope they can be either a limited slip or a full posi and both iroc can come with disk or drum..
You do know that a Limited Slip and a Posi are the same, right? Posi - short for Positive Traction, was GM's name for a Limited Slip Rear End.

The one legger is called an Open Differential, or an Open Carrier.
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Old 02-15-2008, 10:17 PM
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Reload this Page 1988 iroc?
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1988, 410, differential, do, iroc, limited, posi, positive, slip, supra, toyota, traction, unit
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