JH I went to an HEI the "simple way." You read on and on how you need a great big E core coil, and ETC but I didn't go that route
There was a thread the other night about "what to get away with" insofar as heat sink for an HEI. Mine is mounted on the flat of the firewall between the heater and the wiper. There was already a small hole drilled there by the previous owner, so I made use of one of them. Notice that I use a stock factory coil, no ballast. Gone through two hot summers now Tach and power junctions are made right at the coil.
The mounting:
The diagram: The arrow off to the right hooks to the brown and dark blue hooked together, including the regulator "IGN" terminal. Take note of the distributor connector polarity
I also threw one together for emergencies
But the main reason I was spurred to build the last one is that I ended up test firing two engines, and that proved VERY handy. Hook up coil hi tension, ground, and battery, and plug in the dist. and you have fire
THAT'S RIGHT!! I fired this right up with no exhaust manifolds. If I ever build a rat, I might just use about 2" straight out for exhaust, "Rolls Merlin style"