Pinging

I cut the slots at .430 which is 30 degrees [checked]and my can is 11 so ill have to weld em up again and recut to get about 20.. ill run it and get the garbage gas out of there and put good gas back in and reset and retest...ill be back when that's all done..thanks all..j

18---20 is a pretty good starting point for even a mild engine

Here's a chart I found on the www. Slot lengths are distributor degrees................

Dimensions for Mopar distributor slots, in DISTRIBUTOR degrees

Modifying advance slots
degrees / slot size
6.............. .340
7................355
8................375
9................390
10...............405
11.5 ...........420
12...............435
13...............445
14...............460
15...............475
16...............490
17...............505
18...............520