Speedo Gears for T-5, or other method of calibration.

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Aug 1, 2001 | 11:21 AM

89Iroc-ZL98

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Joined: Jan 2000

Posts: 105

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From: CT

Car: 1989 Chevrolet Camaro IROC-Z

Engine: 5.7L TPI

Transmission: WC T-5

Speedo Gears for T-5, or other method of calibration.

I have just swapped a T-5 in place of my 700R4 and need to calibrate my speedometer. The tranny has what looks like a purple (7 tooth?) drive gear with a Red (19 tooth?) driven gear. I believe the donor car had 3.23 rear gears. What do I need to adjust to my 2.77's (245/50ZR16 tires)?

Is there any way to calibrate the speedo without removing the drive gear? I'm looking to get as close as I can for now as I plan to swap in 3.4x gears this winter (any suggestions going from 2.77's in a 9-bolt to 3.4x?) so I don't want to spend much $$ on this.

Thanks in advance for the help.

Aug 2, 2001 | 12:41 PM

89Iroc-ZL98

Thread Starter

Member

Joined: Jan 2000

Posts: 105

Likes: 0

From: CT

Car: 1989 Chevrolet Camaro IROC-Z

Engine: 5.7L TPI

Transmission: WC T-5

anyone??

Aug 2, 2001 | 03:59 PM

Omar

Senior Member

Joined: Jul 1999

Posts: 994

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From: San Diego, CA

If you want to correct your speedo for your 2.77's, you will have to remove your drive gear and replace it with a 9T.

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1989 IROC-Z 5.7L
NOS 5151 150HP kit
ProBuilt 700R4, PI Vigilante 2800 stall lockup
Baer Brakes 12" Sport System