Superlift TruSpeed Speedometer Calibrator

[ctfan]

I just sold my old 80 K-10 and I am now thinking of putting bigger tires on the truck. Most likely 285's. I am wanting to make sure that the speedo is correct after I do this and want to know any info on them. National Tire and wheel has them for 181.00 Good price, or is there a better place? Is there something else that might work better? I don't have the money for a programmer so this is my only route.

Thanks

 

William

[black0o]

if you want to change the tire size the speedometer will read a wrong reading if you want to know the diffrance there is a calculator in

http://www.granatellimotorsports.com/speedcal.htm

download the program and calculate the new tire size with the stock one