84 z28 rear differential

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Sep 1, 2005 | 08:08 AM

dmp7777777

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Joined: Jul 2004

Posts: 115

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From: illinois

Car: 1982 z28

Engine: 350

Transmission: th350

84 z28 rear differential

whats the possibility of an 84 z28 having a factory posi and whats the standard gear ratio in this year model, lookin at a parts car sunk in the earth

Sep 1, 2005 | 08:12 AM

ede

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Joined: Aug 1999

Posts: 14,811

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From: Jackson County

very good not sure on ratio. think the one i had was 3:42

Sep 1, 2005 | 11:52 AM

Z28cross-fire

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Joined: Aug 2004

Posts: 456

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Car: '94 Z28

Engine: LT1 350

Transmission: 4L60E/A4

It's going to have 3.23, 3.42 or 3.73 depending on the transmission. If manual, automatically makes it 3.73. If it's automatic tranny it could be either of the three. Check the RPO codes if they're still there.

GU5 - 3.23
GU6 - 3.42
GT4 - 3.73
G80 - posi
G92 - performance