Russ,
The MSD (7AL-2
Russ,
The MSD (7AL-2) has been a constant for many, many year is this car...as the original Dino/Digiplex unit proved to be marginal, at best. As the BB has no cold starting mechanism or enrichment devices, a start after a prolonged sitting could result in a (fouled) plug change.
The gap...after alot of thought, conversations with MSD and NGK, I arrived at .035". Keep in mind that the compression of my engine is now at 11:1 versus the stock 8.8:1. The higher compression required a .005"-.010" reduction in the gap I had planned on using. MSD wants big gaps...NGK says not to open the plugs larger than .008"-.010" than the nominal gap the plugs came with...
And larger plug caps (can) cause greater cap and rotor wear...
Honestly, I was totally amazed at the cold driveability, as this is NOT one of the BBs stong suits.
Regards,
David