anyone know of an alternative to MSD cap

famous bob said
I aint no expert, but have never understood why a person needs a phased rotor on a Chrysler big block. I had to clearance my raised port head a hell of a bunch, clock the (fast) electronic dist. in a cetain way, because its based on a short chevy shaft. Then adjusted the dist. drive gear , and lined everything up on number one. Doesn`t make any diff. what location no.1 is , as long as it`s right . ???????????

2nup350 said
it's because using the timing controls in teh F.I. can make the rotor so far away from the contact point that the spark will want to jump to the next wire contact rather than the correct one. it just makes the spark stronger and more stable when fiddling with timing. Imagine if you could have the rotor perfectly aligned with the contact even though the initial timing of your engine was set at 12 deg.

You must phase the rotor when running a locked distributor to ensure the rotor placement during the full sweep of advance. An unlocked distributor actually adjusts it's phasing as it advances to maintain the relation of rotor/terminal. If you do not phase it, the rotor will advance to the point where it's throwing spark to the next terminal vs the desired terminal