Well I'm finally getting around to installing my 3.42's. A noticeable change I hope from the 2.73's . Anyways , my 86 Trans Am appears to have the electronic sensor on the tailhousing. I've gotten the info on the speedometer gear changes I need to do (15 tooth gray #8642620 drive and 41 tooth yellow #25513048 driven ). But what about this sensor. Does it also have to be replaced or can the existing one be used

 

Someone..... It's an automatic if that helps.

 

It can be re-used. Check out this link: Speedo Gears

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GM Master Tech
ASE Master Tech + L1
Savannah, GA

'87 Trans Am
S/D TPI retrofit including functional PassKey,
22# injectors,
Whatever chip I feel like burning,
JET AFPR, Ported Plenum,
TB Coolant Bypass, Custom Cold Air,
SSM SFC, KYB Shocks, Boxed LCAs, Wonder Bar,
8mm Accel wires,
Flowmaster Exhaust,
16" GTA rims,
Corvette Servo,
3.73 Posi
4wheel Disc Brakes
Summit 1-5/8" headers, 2.5" Dynomax catback.

Best 1/8: 9.519@72.74

'97 Bonneville SSE

[This message has been edited by GMTech (edited August 19, 2001).]