LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

What size bolt for crank hub 97Z?

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Sep 22, 2004 | 06:26 PM

#1

remaxracer45

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Joined: Oct 2002

Posts: 1,875

From: Wisconsin

What size bolt for crank hub 97Z?

I have a 97Z which had a underdrive pulley on it, took it off and want to replace it with the correct bolts? These are the bolts which hold on the balancer and pulley hub, stock stuff.
Shawn

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Sep 22, 2004 | 08:10 PM

#2

shoebox

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Joined: Dec 1969

Posts: 27,728

From: Little Rock, AR

Re: What size bolt for crank hub 97Z?

crank pulley bolts
7/16-14 x .88
GM p/n 9442448

crank hub bolt
7/16-20 x 2¼
GM p/n 9440024

crank hub bolt washer
GM p/n 10128306

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