As I said in your other post is what type of transmission are you running? Are there speedometer adapters available for it? I'm running a SM420 and got a speedometer adapter since I changed the rear end gears. With my 3.55 gears, I cruise at 60+ running at 2200 rpm.


Craig

My '50 Chevy 3100 5 window, '62-235cu, 3:55 rear
My truck ....... Respect The Rust
If I'm not working on my truck, '65 m00stang or VW camper, I'm fishing with the wife or smoking Salmon.