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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: 79350pu on August 31, 2006, 11:30:00 pm

Title: speedometer
Post by: 79350pu on August 31, 2006, 11:30:00 pm

Hi All
  On my '79 1/2-ton 4x4, I have a 4" lift with 33" tires.  A couple of years ago I remember somebody posted the formula to change the speedometer gear.  It had to do with the gear ratio, size of tires, etc.  If anyone can remember it or a website, I'd appreciate it.

Rick, 79chevy 1/2 ton 4x4 project

Title: Re: speedometer
Post by: roundedline on September 02, 2006, 10:32:00 am

Try here: www.73-87.com/7387garage/...speedo.htm

Chris Lucas
www.73-87chevytrucks.com
www.captkaoscustoms.com
Project Su
Jimmy 2WD Project