OK. Dizzy came new from Performance Distributors and was set with mechanical advance at 24 from their factory. That new Davis unit had a stripped screw at one location holding in the module, one of the pole wires to module loose and barely making contact with the module and that module lasted for four starts of the car, then needed to be replaced. Coil new with the Davis dizzy, no welding on car, no jumping other cars, and all of the ground straps intact and tight.
Engine was rebuilt 3 years ago including cam, timing chain, damper,crank, rods, pistons, rebuilt aluminum heads and intake with a Cliff built Quadrajet. Initial timing was set at 20 BTDC and ran 13 inches vacuum at 800 rpm and the engine really liked that timing. With the new dizzy, I ran a 12 gauge with from fuse box directly to dizzy, eliminating the 6AL control box and coil. Timing uses #1 cylinder ( drivers front) and vacuum module on dizzy points to drivers side. Yes, Summit unit uses correct pole/module set up for Pontiac and that new unit was partially dis-assembeld/ re-assembeled prior to install. Also, I changed the springs from the Davis unit to the new Summit unit to replicate the Davis vacuum setting and verified with a vacuum pump prior to install.
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