strength of the gm 9 bolt

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Mar 13, 2003 | 06:10 PM

89firechicken

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From: Bellevue, NE

strength of the gm 9 bolt

ok now i have a 89 formula how can i tell if i have a 9 bolt or not. also if i do have a 9 bolt how much power will this rear handle with a posi and a 3.73 or 4.10 gear?

Mar 13, 2003 | 06:50 PM

definitive1

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From: Hamden, CT

Look at the rear end cover and count how many bolts there are holding it on.

I have heard that the 9 bolt is stronger than the 10 bolt, dont hold me to that though. Search the boards and see what u find...

Mar 13, 2003 | 09:34 PM

89firechicken

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From: Bellevue, NE

so a 9 bolt will have 9 bolts and a 10 will have 10 is that right?

Mar 13, 2003 | 10:36 PM

CamaroEFI

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From: Summerville, SC, USA

i have also heard that 9 bolts are stronger but my friend had one in his 84 z and it didn't last that long. i know that doesn't mean much though

Mar 14, 2003 | 07:22 AM

DJP87Z28

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From: Florida

Car: 1987 Black IROC-Z (SOLD)

Anything mechancial will fail if you abuse it enough.

Mar 14, 2003 | 09:43 AM

curt86iroc

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From: Hillsborough, NJ

Car: 1990 IROC

Engine: L98

Transmission: TH700-R4

yea, a 9 bolt is a lot stronger than a 10 bolt. the 9 doesnt have c-clips and the axles are stronger.....

Mar 14, 2003 | 09:47 AM

89firechicken

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From: Bellevue, NE

ok so how can i tell if i have a 9 bolt

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Mar 14, 2003 | 11:20 AM

DJP87Z28

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From: Florida

Car: 1987 Black IROC-Z (SOLD)

You answered the question yourself in one of your previous Posts.

Mar 14, 2003 | 06:14 PM

formul8!!

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From: www.thirdgentech.com

Car: 2004 GTO

Engine: LS1

Transmission: T-56

According to 9bolt.com, the 9 bolt rear is supposedly stronger than the Dana 44.

Min has 87,000 original miles on it and with regular oil changes with Redline synthetic, it has worked perfectly after 400+ drag strip passes.