What kind of gears do I have?
Thread Starter
Senior Member
iTrader: (2)
Joined: May 2002
Posts: 504
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From: Hollywood, FL
Car: '88 Black GTA, T-tops, digital dash
Engine: 5.7 TPI w/custom chip
Transmission: 700R4
Axle/Gears: 9 bolt 327 posi
What kind of gears do I have?
My car is missing the codes in the glove compartment since I got it. It does have a posi diffferential as I saw the little plate saying it. It has 4 wheel disc brakes too and a WS6 suspension. It has 9 bolts. So, how can I know what ratio gears does it have? Thanks in advance.
Last edited by Davidgou; Jan 18, 2010 at 11:56 PM.
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Re: What kind of gears do I have?
My car is missing the codes in the glove compartment since I got it. It does have a posi diffferential as I saw the little plate saying it. It has 4 wheel disc brakes too and a WS6 suspension. It has 9 bolts. So, how can I know what ratio gears does it have? Thanks in advance.
85-90 9 bolt equipped f-bodies were available with either standard open differentials or limited slip versions as well as several different ratios including: 2.77, 3.08, 3.27 (G92 w/auto), 3.45 (G92 w/stick), and a few 3.70 ratio's came in some 85 & 86 Firebird's w/L69, stick & G92=Very Rare!
Here's another link to check:
https://www.thirdgen.org/1988-pontiac-firebird
JamesC
Last edited by JamesC; Jan 23, 2010 at 09:54 AM.
Thread Starter
Senior Member
iTrader: (2)
Joined: May 2002
Posts: 504
Likes: 0
From: Hollywood, FL
Car: '88 Black GTA, T-tops, digital dash
Engine: 5.7 TPI w/custom chip
Transmission: 700R4
Axle/Gears: 9 bolt 327 posi
Re: What kind of gears do I have?
The best way is to drop the diff cover and take a peek. The following from the FAQ section may provide some useful info:
85-90 9 bolt equipped f-bodies were available with either standard open differentials or limited slip versions as well as several different ratios including: 2.77, 3.08, 3.27 (G92 w/auto), 3.45 (G92 w/stick), and a few 3.70 ratio's came in some 85 & 86 Firebird's w/L69, stick & G92=Very Rare!
Here's another link to check:
https://www.thirdgen.org/1988-pontiac-firebird
JamesC
85-90 9 bolt equipped f-bodies were available with either standard open differentials or limited slip versions as well as several different ratios including: 2.77, 3.08, 3.27 (G92 w/auto), 3.45 (G92 w/stick), and a few 3.70 ratio's came in some 85 & 86 Firebird's w/L69, stick & G92=Very Rare!
Here's another link to check:
https://www.thirdgen.org/1988-pontiac-firebird
JamesC
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