My corvette use a big cap HEI dis:




So the distance between the "pins" inside the cap should be greater vs a small cap dis with external coil?

Is this reflected in the bin file ?
My 1991 corvette has crazy amount of part time / crusing spark advance, around 46.
On a camaro same year, same TPI but with a small cap dis with external coil, the timing is not even close that at the same MAP/RPM.

Is that why, or am I thinking totally wrong here..

Cheers

Aluminum heads vs iron heads is why.

Hmm, there you go. Dident know that the same year Camaro hade iron heads..
Makes sense.

Thanks for explaning

//Anders