Figuring speedo gears.... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

44th Miss Inf · 11-21-2005, 04:17 PM

Anyone know the formula to figure out which speedo gears (the one that goes on the tailshaft, and the one the cable attaches to) I need? I have both wiped out in my transfer case (208C, 82 model) My speedo was off, and since I am buying new gears, would like to get the speedo right.
Truck is a 82 3/4T 4x4 w/ 3.73 gears and 33 inch tall tires.

Thanks,
Virgil

swb85 · 11-21-2005, 06:54 PM

Try here. This is where I figured out my speedo gears.

http://novaresource.org/speedo.htm

79BIG10 · 11-21-2005, 10:21 PM

Also try here http://www.73-87.com/7387garage/drivetrain/speedo.htm

44th Miss Inf · 11-22-2005, 10:44 AM

Thanks, I did a search, but must not have been using the right key words. These helped me figure out what I needed.

Thanks again,

Virgil

11-21-2005, 04:17 PM	#1
44th Miss Inf Registered User Join Date: Sep 2002 Location: Liberty, Mississippi Posts: 672	Figuring speedo gears.... Anyone know the formula to figure out which speedo gears (the one that goes on the tailshaft, and the one the cable attaches to) I need? I have both wiped out in my transfer case (208C, 82 model) My speedo was off, and since I am buying new gears, would like to get the speedo right. Truck is a 82 3/4T 4x4 w/ 3.73 gears and 33 inch tall tires. Thanks, Virgil

11-21-2005, 06:54 PM	#2
swb85 On a budget like Fred Sanford Join Date: Oct 2005 Location: Topeka, KS Posts: 2,031	Re: Figuring speedo gears.... Try here. This is where I figured out my speedo gears. http://novaresource.org/speedo.htm __________________ '85 Silverado swb: 383 stroker, 10.5:1, vortec heads, 232/238 roller cam, RPM air gap, performer 750 carb, stainless longtubes, 3" duals/super 44's, T56/4.11 383ci build / exterior refresh thread '98 Camaro z28: 370ci twin turbo 370ci build '01 Tahoe LT 4x4: 5.3, longtubes/ory, magnaflow duals, custom tune....wife's DD

11-21-2005, 10:21 PM	#3
79BIG10 I'm back with 2nd truck! Join Date: Feb 2002 Location: Texas Posts: 3,774	Re: Figuring speedo gears.... Also try here http://www.73-87.com/7387garage/drivetrain/speedo.htm __________________ 1979 Chevrolet Bonanza Big10 "Tootsie Roll" 1985 Chevrolet Silverado (wife's) Member of the Southern Bowties Club "Don't underestimate how sexy a fat man who drinks to excess can be." Homer Simpson

11-22-2005, 10:44 AM	#4
44th Miss Inf Registered User Join Date: Sep 2002 Location: Liberty, Mississippi Posts: 672	Re: Figuring speedo gears.... Thanks, I did a search, but must not have been using the right key words. These helped me figure out what I needed. Thanks again, Virgil

Thread Tools
Show Printable Version Email this Page
Display Modes
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.