Speedometer

Pfiffle · 02-24-2008, 10:13 AM

I'm in the process of changing my open rear 2:41 axle to a 3:73 posi on my 76 Cutlass. The new axle will be an 8.5 10 bolt also. Anyway my speedometer will be way off, right? Is there a conversion chart or formula that I can use to correct it with regards to the speedometer gears/hardware? Thanks. Tom.

88 coupe · 02-24-2008, 10:53 AM

http://www.transmissioncenter.org/GM...eter_Gears.htm

Norm

Pfiffle · 02-24-2008, 11:27 AM

Excellent. Thanks Norm.

02-24-2008, 10:13 AM	#1 (permalink)
Pfiffle Senior Member Join Date: Jul 2006 Posts: 105	Speedometer I'm in the process of changing my open rear 2:41 axle to a 3:73 posi on my 76 Cutlass. The new axle will be an 8.5 10 bolt also. Anyway my speedometer will be way off, right? Is there a conversion chart or formula that I can use to correct it with regards to the speedometer gears/hardware? Thanks. Tom.

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02-24-2008, 11:27 AM	#3 (permalink)
Pfiffle Senior Member Join Date: Jul 2006 Posts: 105	Excellent. Thanks Norm.