89 Formula Speedo Interchange 120 to 140?
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From: Rhinelander, WI
Car: 89 Formula
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 9 Bolt 3.27
89 Formula Speedo Interchange 120 to 140?
I am new to this site and I did try reserach this question. I have a 89 Formula with a 305 TBI, automatic car with the 120 mph speedo and 6K tach. Will a 89 Trans Am GTO 140mph 8K tach cluster interchange and work correctly? I did this once on my 86 many years ago and it worked ok but the Holland interchange book doesn't show this particular application. Your help is apprecaited.
Thanks,
Jim
Thanks,
Jim
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