The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Where to find a speedometer calibration box?

chastain90 · 10-07-2016, 09:10 PM

I found some on ebay. I guess they are called speed gear ratio box.

10-07-2016, 09:10 PM	#6
chastain90 Registered User Join Date: Jul 2009 Location: Chatsworth Ga Posts: 400	Re: Where to find a speedometer calibration box? I found some on ebay. I guess they are called speed gear ratio box. __________________ Build Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=706924