LOST 10mph AND ABOUT 6 TENTHS

[monte8616]

Originally Posted by MR DERBY CITY

When I weld on my car I ALWAYS disconnect my MSD and all grounds to the engine block. Jerry Doughty from Louisiana was the racer that had to DE MAGNETIZE his stocker. Perhaps him or his brothers could jump in here on this thread. I remember it involved a compass and a cell phone ...his stocker had the same symptoms as your car....

I don’t think anything was in the car when we welded but still a good thought - thank you! Nothing is a bad idea at this point!