i live just north of detroit-i have a 302 engine with a holley four barrel in my 1966 mustang-does anyone know of a dyno testing facility in the area-i want to have the
engine specs checked and any issues corrected-i have a slight vibration in the engine either in park or in gear-thanks

 

I duno.....?

Check the dwell of your distributor. You may just need a good tuning.