Speedo

Lencross · 10-18-2009, 02:34:33 AM

My Speedometer isnt reading right...any idea how I can adjust it?

73 Z · 10-19-2009, 10:02:07 PM

if its a 4 speed u can change out the plastic gear @ the trans, that matches your rearend gearing. some times they go bad or the trans or rearend came from a different donor. my 4 speed came from a chevelle so the speedo out put gearon that trans didnt match my 373 rear gearing on the 73 Z

Twisted_Metal · 10-19-2009, 10:53:15 PM

There are two ways to adjust a speedometer...

Change the speedometer gears or add a conversion box between the transmission and the cable.

Here's a link to a speedometer gear calculator.

When you figure out the gears you need... Here's a link to buy them.

I'm not sure who sells speedometer ratio converter "boxes".

nicpiccamaro73 · 10-20-2009, 11:08:36 AM

I'm not sure who sells speedometer ratio converter "boxes".[/quote]

Stewart Warner makes them but I do not know where to get them. I found them on the net once but do not remember where. I know they were pricey though. So hopefully you can do it with trans speedo gears.