- 9,580
- 218
- 63
- Location
- Dickson,TN
You can get a tach that reads a piece of magnetic tape stuck to the flywheel pulley.jwaller said:I tried to have my truck dyno'd but with a tach signal they couldnt do it. so what I did was time myself from 2000rpms in 5th gear and go WOT and see how long it took to accelerate to 2500 rpms. I was able to knock about 3.4 sec off my time.