Hey guys, guess my first question is more general but, how does the 6AL compair to the stock HEI? I guess you have to remove the HEI module to make it work?
Also with burning proms, the prom IS still in full controll of the timing curve even with a 6al correct? I dont want to ever loose precise controll of th timing curve
Thanks

------------------
1985 IROC-Z
TPI 305, 700R4 with shift kit, richmond 3.73's, auburn pro series posi, crane compucam 2030, ported plenum, gutted air boxes, all the little insignificant stuff.

 

Nope, just use the original point trigger lead to trigger the MSD.
So yes, the ecm still is in charge of the timing.
All your CDIs just give you a faster raise time on the coil, and the spark occurs with less ringing of the coil. On SOME engines can be good, on some won't matter. I've never had any good luck with MSD, but have with Crane. FWIW

 

So are you recommending against MSD and staying with stock HEI?



------------------
1985 IROC-Z
TPI 305, 700R4 with shift kit, richmond 3.73's, auburn pro series posi, crane compucam 2030, ported plenum, gutted air boxes, all the little insignificant stuff.