I recently put a GM 3.73 gear fro my stock 3.42, and the Hypertech progrmmer only goes to a 3.42 opion. The gear of course threw off my speedo. Now I have to calibrate it using the tire heigth option on the programmer but I'm not sure as to what to set th tire heigth at. I have a set of 245/50/16's o the car. If anyone has switched to this size gear and has an answer plase lt me know. Thanx guys!
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Speedo correction for a 3.73 gear
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Speedo correction for a 3.73 gear
01\'Y87 Firebird:Gt1 cam,Vig.3000 stall
AR stage 3 heads/intakes to be installed
www.cardomain.com/id/firehawknwv
www.vaperz.com
PEWTER MAFIA/ Kristen's "PEWTER MAFIA KING"
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