So i'm running a thumpr cam in my 357 sbc dome pistons with an hei streetfire dizzy and after fighting to get it to run properly i just gave up on using a light. now i managed to get this thing to run beautifully by ear and test drives....i threw the light on it and i'm getting a reading of 2 degrees AFTER tdc and 8 btdc with advance hooked up and it runs great! now i've got people telling me i'm one tooth out on my dizzy but as far as i kno you cannot be out a tooth on HEI distributors, it would be one plug tower out but then it would run like absolute garbage which isn't the case. i'm wondering if my time light is hooped? (its my father's from the late 80's lol) i rather enjoy the truck running great and the power the cam gives me but i'm uneasy about the atdc timing...anyone run into this?
