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| | | Forums66 Topics128,014 Posts1,055,328 Members48,419 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
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on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
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#25010 10/22/2002 2:07 AM | Joined: Oct 2002 Posts: 77 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2002 Posts: 77 | NEED HELP. JUST INSTALLED 3.73 GEARS WHAT IS THE COLOR CODING FOR TRANNY SPEEDOMETER GEAR?
OR DOES ANYONE KNOW ANY FORUMLA FOR FIGURING THIS OUT. | | |
#25011 10/22/2002 4:37 PM | Joined: Feb 2000 Posts: 5,191 'Bolter | | 'Bolter Joined: Feb 2000 Posts: 5,191 | Was the speedometer correct before you changed rear gears? If it was you can figure out what gear to buy. If you had a 4.10 gear and changed to a 3.73, you decreased rpm by 10%. So now, pull out your current speedometer gear and decrease it 10%. If it wasn't correct before check out this link on speedometer ratio and testing. Joe H speedometer shop | | |
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