I've just got my GM HEI up and running. I have not yet put any miles on it. That will happen in the next few days.
I've got a question to those that had already done the GM HEI conversion. Have you had any long term problems using the HEI ? burning out rotors ? caps etc ?
Any ill effects ? I just want to be ready just incase. Thanks Guys

_________________
Mostly Old Parts And Rust
1933 Desoto Coupe 426 Hemi
1946 Dodge dumpbed pickup 2.5 Turbo 4cyl
1964 Dodge A100 pickup 273 automatic
2002 PT Cruiser Woody edition

We have at least 3 of them running right now and they have all been on the road for over 2 years. No problems with any of them. Of course a module could go bad, and I keep a cheap spare in the glove box just in case. But no problems yet.

Rick

_________________
2 Mopars come with Spark plug tubes. One is a world class, racing machine. The other is a 426 CI. boat anchor!

12.70 @ 104.6

That's what I was hoping to hear. What about anyone else ?

_________________
Mostly Old Parts And Rust
1933 Desoto Coupe 426 Hemi
1946 Dodge dumpbed pickup 2.5 Turbo 4cyl
1964 Dodge A100 pickup 273 automatic
2002 PT Cruiser Woody edition

How many GM cars have you heard of crapping out because their HEI failed?

I would say they are pretty much bullet proof. Now if you are using a twenty five year old part found in a pick & pull perhaps that item may be approaching its design life, perhaps not. I don't recall reading any negative leanings on this site regarding their longevity and reliability.

One should take care to construct a good heat sink when converting to GM HEI heat being its nemesis.

_________________
67' Dart GT Convertible; the old Chrysler Corp.
82' LeBaron Convertible; the new Chrysler Corp
07' 300 C AWD; Now by Fiat, the old new Chrysler LLC

What he said.
I have had mine in since 2007 and have not had to replace it.
When I first did the conversion i used a heat sink from a computer. I burned that module in no time, less then a week.
Replaced the module and heat sink and haven't had any issues since.
Here is my setup https://onedrive.live.com/redir?resid=D ... oto%2c.JPG

Dave

_________________
86 Miser 170,000+
2 1/4" exhaust
Holley 1920 #55
HEI MSD BLaster 2
17.8 mpg

Havnt had mine on as long as some around here but going on a good couple years now running mine. Had one module fail, but it was an old one just to do the conversion.

Key points: good heat sink, good ground, and good power supply... Use quality wires and connectors, wrap everything up nice, and for best results upgrade the coil to a low ohm/ high out-put unit at the same time.

_________________
"if it aint broke, fix it till it is"
78 Plymouth Volare Super Six wagon
89 Volkswagen Golf GTI 16v
92 Chevrolet K1500 5.7
98 Ford Escort ZX2 zetech

Currently I have been running hei on my year round daily driver 69 D100 for about 4 years with no issues. I did upgreade to the Accel unit just because it revs a bit higher than a stock hei unit.
I did also run a hei unit on a Scamp with a mild 360 as a year round daily for about 7 years with no issues.

I had an HEI module go bad,, new part, had about a month of service on it,, then engine would intermittantly miss then die when warm.

The HEI module was exchanged under warranty,, has been fine since