240 Trick Flow 440

Stock distributor vs the Summit/FireCore50.............

This the first time I've received a distributor from them that came with the advance locked out and the rotor phasing screwed up. It could have been a return that wasn't right and they resold it to us, or the tolerance stack of all the related engine parts added up to a phasing problem.

The red block on the distributor barrel is the location and width of the #1 cap terminal. You can the rotor's eye view of 36 degrees total advance and that the rotor isn't anywhere near the terminal. Then twenty degrees initial.

After the fix the twenty degrees initial covers the terminal and the when the rotor is at 36 degrees total it's still on the #1 terminal.

Now MSD has an adjustable rotor but no luck with the FireCore50. So my solution was to modify the reluctor. The stock on the left and the modified on the right. Only took two tries to get it right.