difference between VSS part numbers

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07-08-2018, 08:21 PM

91 camaro racer

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Car: 91camaro rs,2014 silverado 5.3L

Engine: 5.7Lcarb,5.3L

Transmission: 700-r4, 6L80

Axle/Gears: strange 3.73's

difference between VSS part numbers

i need a new vehicle speed sensor. i see that there are 2 options for 1991 700r4. they are both for electric speedometers. part numbers 10456088 and 10456089. the speedo gears i am using are 15 drive and 43 driven.

10456088 link-

https://www.amazon.com/ACDelco-213-197-Original-Equipment-Vehicle/dp/B0016I5AK0/ref=sr_1_2?s=automotive&ie=UTF8&qid=1531099260&sr=1-2&keywords=10456088

10456089 link-

https://www.amazon.com/ACDelco-213-198-Original-Equipment-Vehicle/dp/B0016IBR34/ref=sr_1_1?s=automotive&ie=UTF8&qid=1531099196&sr=1-1&keywords=10456089

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07-08-2018, 09:31 PM

rt66er

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Car: 1990 Pontiac Firebird Formula

Engine: L31 350 TPI

Transmission: Tremec TKX

Axle/Gears: 3.23 Posi

Re: difference between VSS part numbers

Someone else should verify, but my understanding is the 6088 is for 3X tooth driven gear and the 6089 is for 4X tooth driven gear. I hope so, because I purchased a 6089 so I can install a 44-tooth driven gear to correct for my 2.73 to 3.23 rear gear swap.