89 and Rear Disc Brakes
Thread Starter
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
89 and Rear Disc Brakes
Were all disc brake rear ends in 1989 nine bolts?
JamesC
JamesC
Thread Starter
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
Apparently with 2.77's, 3.27's. and 3.45's. Anyone know what speedo gears I'd need for a T-5 (with 3.27's or 3.45's) and/or what the length of the rear end is? Also, were the 9-bolts all limited slip?
JamesC
JamesC
Last edited by JamesC; Dec 17, 2003 at 06:44 AM.
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Joined: Mar 2001
Posts: 6,420
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From: Fort Mill, SC, USA
Car: '88 Iroc, '91 RS, and a '70 RS
Engine: 5.7 TPI; 5.0 TBI; ZZ4/T56 on the ag
Transmission: A4, A4, slated to be a T56
I can't answer all you asked, but all 9 bolts were NOT posis. I've seen many posts from guys running 3.08 open drum 9 bolts....wierd huh..
Joined: Nov 1999
Posts: 1,790
Likes: 22
From: Monroe,NC
Car: 90 Formula
Engine: 305
Transmission: 700R4
Axle/Gears: 9 bolt/3.27
I don't think you can the exact speedo gears for the 9 bolt ratios anymore. I just recently swapped in a 2.77 9 bolt and wound up using the gears for the 2.73 ratio. This shouldn't make any real difference,maybe a 1/2-1 mph difference between the two. The dealers however still have all the gears for the 10 bolt ratios so you should be able to get them. Just tell the dealer what ratio you have and they should be able to hook you up.
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iTrader: (7)
Joined: Mar 2001
Posts: 6,420
Likes: 5
From: Fort Mill, SC, USA
Car: '88 Iroc, '91 RS, and a '70 RS
Engine: 5.7 TPI; 5.0 TBI; ZZ4/T56 on the ag
Transmission: A4, A4, slated to be a T56
Yep, like Mongoose (Mike) said. Although I can't input for your 5 speed, the gears for the 2.73/2.77, 3.23/3.27, and 3.42/3.45 (10/9 bolt ratios) with autos are all the same for 9 and 10 bolts. The 2-5 hundredths make no difference in MPH in these applications, so it would stand to reason that the 5 speed gears would interchange in the same manner.
www.700r4.com
Ed
www.700r4.com
Ed
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