Many years ago when I installed my Patrick's 3:55 rear end gears, I had to go thru all this Speedometer reading adjustment. Back then, we had a very local speedometer shop to helped me out but I still had to give them the truck tire reading for a full revolution. The above stuff that Dan provided is it.


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.