Changed Gears, Speedo's off
Thread Starter
Member
Joined: Jun 2006
Posts: 116
Likes: 0
From: Sault Ste Marie
Car: 1985 Trans-Am
Engine: 305 LG4 4bbl
Transmission: T-5
Axle/Gears: 3.27 Limited Slip
Changed Gears, Speedo's off
Hey all, OSS here;
last year I changed my rear end from a blown, open, 3.75 to a limited slip 3.42 rear end, and as a result, my speedo reads slower then I'm going. Any real way to correct this. Would I just have to get a speedo cable from a 3.42 car and run it in my car? Car is an 83Z
-OSS
last year I changed my rear end from a blown, open, 3.75 to a limited slip 3.42 rear end, and as a result, my speedo reads slower then I'm going. Any real way to correct this. Would I just have to get a speedo cable from a 3.42 car and run it in my car? Car is an 83Z
-OSS
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Joined: Aug 2004
Posts: 1,367
Likes: 0
From: Nanticoke, Pa
Car: 89 Firebird
Engine: 406 CI
Transmission: Pete K 700R4
Axle/Gears: 3:55
If you are running a 26 inch tall tire, I am pretty sure you need a grey 15 tooth drive gear and a 42 tooth driven gear to correct the speedo reading.
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
Yes, with the proper speedo gears.
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From what I gather, the poster is running at T-5. The following link will provide some part numbers that may be useful:
https://www.thirdgen.org/forums/tran...en+gear+sleeve
JamesC
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https://www.thirdgen.org/forums/tran...en+gear+sleeve
JamesC
Last edited by JamesC; Feb 26, 2007 at 03:52 PM. Reason: Automerged Doublepost
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