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What type of rearend came on a 86 IROC posi???

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What type of rearend came on a 86 IROC posi???

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Old

Feb 21, 2003 | 04:26 PM

#1

Thread Starter

Senior Member

Joined: May 2001

Posts: 509

Likes: 1

From: N/a

Car: 1986 IROCZ

Engine: LB9....rebuilding coming soon

Transmission: rebuilt 700R4

What type of rearend came on a 86 IROC posi???

I am getting new gears and need to know

:hail: 342s

Old

Feb 22, 2003 | 01:42 AM

#2

Senior Member

Joined: Oct 2002

Posts: 694

Likes: 0

From: Glasgow Kentucky

Car: 04 Vette

Engine: LS1

Transmission: 4L60E

Axle/Gears: 2.73

If it has a rubber plug in the inspection cover it is a 9-bolt if not it`s a ten bolt.

Old

Feb 22, 2003 | 06:55 AM

#3

Riley's35089rs+

Supreme Member

Joined: Nov 2001

Posts: 2,743

Likes: 1

From: heartland

Car: 89rs (previous 2.8)

Engine: 406

Transmission: 700r4 (for now)

uh ...count the bolts in the inspection plate.....plugs can be and are swapped very easily..

Old

Feb 22, 2003 | 12:28 PM

#4

Supreme Member

Joined: May 2002

Posts: 4,099

Likes: 2

'86 came with the weak Saginaw 10 bolt. If it is a posi rear and was never replaced, you are living on borrowed time.

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