Quote from: S412gofast on June 14, 2022, 01:14:32 PM...
Carlquist modified the slot in mechanical advance plate. Welds it up and machines to .380. This allows for 18° init and 36-37° total timing.
+1 Set same timing on 67 GT350 with original engine and highly recommend. At 14-16° initial, RPMs would slow with headlights on. With 18° initial, car doesn't seem to notice the additional load and RPMs maintained. Much better for Saturday night cruising

Accomplished 18° initial by swapping in FE distributor cam on 10L slot and thin sleeve on limit post.