GEAR 3.73's or 3.42's

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Jun 4, 2002 | 08:28 AM

86IROCTHD

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Member

Joined: Aug 2001

Posts: 483

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From: Dallas, Tx

Car: 88 Trans Am

Engine: lt1 intaked 355 makin 277 on 25 psi of fuel pressure and stock timing :)

Transmission: A4 stock... that moved a mobile dyno a foot shifting into 2nd :)

GEAR 3.73's or 3.42's

guys whats the most common set up out there? got 3.08 gears now but need more........ please help

Jun 4, 2002 | 09:18 AM

86IROCTHD

Thread Starter

Member

Joined: Aug 2001

Posts: 483

Likes: 0

From: Dallas, Tx

Car: 88 Trans Am

Engine: lt1 intaked 355 makin 277 on 25 psi of fuel pressure and stock timing :)

Transmission: A4 stock... that moved a mobile dyno a foot shifting into 2nd :)

please

please help BTW its a 9 bolt and a series 2 carrier.....

Jun 4, 2002 | 11:22 AM

82camaro

Supreme Member

Joined: Nov 1999

Posts: 2,860

Likes: 3

From: NE

Car: 82 camaro SC

Engine: 350

Transmission: 700r4

Are you sure you have 3.08's in that 9 bolt rear? The tech database shows 50 86 irocs produced with the 9 bolt and they had the 350 engine.
9 bolt gears are: 2.77, 3.27, 3.45
10 bolt gear on an 86 Iroc are 2.73, 3.23, 3.73 (depending on transmission and G92 option)

Jun 4, 2002 | 12:12 PM

88 427 Camaro

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Joined: Jul 1999

Posts: 931

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From: Mpls, MN USA

Car: 88 Camaro

Engine: 427 BBC

Transmission: T400

3.08 was a rare factory ratio for 9 bolts. To run a 3.45 or a 3.73 gear, you will also need a series 3 posi carrier. All the 9 bolt parts you need are at www.9bolt.com

Miles

Jun 4, 2002 | 12:43 PM

86IROCTHD

Thread Starter

Member

Joined: Aug 2001

Posts: 483

Likes: 0

From: Dallas, Tx

Car: 88 Trans Am

Engine: lt1 intaked 355 makin 277 on 25 psi of fuel pressure and stock timing :)

Transmission: A4 stock... that moved a mobile dyno a foot shifting into 2nd :)

spacer

do they make a spacer for a series 2 carrier? or do i have 2 have 1 made? 400 buck is alot for a new carrier........... or does any1 have them in a good used condition?