Jan, the HEI is a pretty rugged piece of equipment, as long as you're talking about the stock GM unit. Pertronix- - - - -now, that's another subject! Getting unburned gas into the exhaust system is a good way to blow your mufflers off or split some pipes, hoiwever!

I have seen a setup with a small spray nozzle threaded into the tailpipe behind the muffler, and a spark plug mounted back there to light things off. A quick squirt of gas through the sprayer from a small electric pump, and a spark from the plug- - - - -and there's a 6-foot plume of flame out of the pipes! It's VERY illegal in most places around here!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!