| |
Click on image for the lowdown. 
====
| | |
9 members (moparguy, Bill Hanlon, GRNHydra, Otto Skorzeny, mason86, klhansen, Gray_Ghost, mick53, Hawkman),
93
guests, and
2
robots. | | Key: Admin,
Global Mod,
Mod | | | Forums66 Topics128,069 Posts1,055,886 Members48,428 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: May 2005 Posts: 96 Shop Shark | | Shop Shark Joined: May 2005 Posts: 96 | Hi,
Does anybody have experience with a HEI and a flame thrower system? I been told it interrupts the ignition for some time to get some ignitable unburned mixture into the exhaust.
Did anybody try it with an ignition box?
Can it damage the HEI?
Thanks,
Jan
| | | | | Joined: Feb 2004 Posts: 29,777 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,777 | 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!
| | | | | Joined: Aug 2007 Posts: 1,859 Grumpy old guy playing with trucks, cars, and boats | | Grumpy old guy playing with trucks, cars, and boats Joined: Aug 2007 Posts: 1,859 | I second Jerry's comments on blowing mufflers. I did the original flamethrower - basically it cuts ignition and raw fuel is then sent to the exhaust system. This allows the whole exhaust to fill up and then bang....new muffler time as the end seam failed.
I made a unit with a set of spare injectors I had from a Honda, a bosche fuel pump from a VW Fox along with a set of spark plugs, two coils and some 555 timers. The injectors were 18" up the tail pipe with the spark plugs 12" up from the end. Worked well enough for me to determine it would be a safety hazard with 8' flames shooting out of the tailpipe. doing some post research I found they are illegal in most states.
Scott
ps, if you still plan on going ahead, make sure your tail pipe extends past the bumper or you will mess up the paint and your bumper as you let off the gas, the flames waft upward if there is still fuel present.
The problems we face today can not be addressed at the same level of intelligence we were at when we created them - Albert Einstein Or with the same level of $ - Me
| | |
|
|
| |
