Can someone please help figure out what speedo gears I need? I went from a 2.72 or 2.73 to 3.73. My drive gear is a Red 17 and the driven is a Red 37. Please help.

------------------
1988 Camaro Sport Coupe: Orignally: 305 TBI 700r4
Now: 1974 355CI, 2bolt, Badger Flat Head Pistons w/ valve relief, Melling high performance street cam, GM Cast Vortec Heads, Edelbrock RPM Air Gap Intake, Edelbrock 600cfm w/ electric choke, GM HEI w/ vacuum advance, Weiand Low Profile Air Cleaner, Mallory 5 port Fuel Pressure Regulator, 3.73 Posi, Mr. Gasket Throttle Cable Bracket, Corvette Shift Servo, 16" IROC Wheels, Every thing else is STOCK
Best Times:60ft 2.26 1/8th 9.68 @ 73.63 Hoosier Q/T
https://www.thirdgen.org/rides/index.tgo?action=view&rideid=7480

 

for 245/50-16's in the back You will need a 15 tooth (gray Drive Gear) and a 45 tooth (Light blue driven gear)

------------------
91 Z28 5.7l Camaro
T-56,McLeod Street Clutch, Cross Drilled Brakes, KYB's,AFPR, 3.73 Gears, Borla Adjustable Cat Back, Hypertech Chip, Hooker Headers.
more to come....
My 91 Z28

 

A 15T Gray (8642620) Drive and a 44T Dk. Gray (9780470) Driven should work. Need your tire size to tell exactly.

[This message has been edited by Apeiron (edited November 19, 2001).]

 

245/50 16'S is the size I have. What gears should I use for 255/50's?

 

15T/44T for 255's
15/45T for 245's