okcjeeper

Can our 4.0 straight 6's be converted to an HEI ignition system? If so anyone have any info?

prerunner1982

You know I was looking into that the other day when I came across a GM HEI distributor for the 4.2 but I figured being computer controlled they probably already had an HEI type ignition... or atleast have the same capability/out put of one. If this was a good upgrade I would imagine we would have heard about it already since it seems to be a popular mod for the 4.2ltr. I am also interested in this if anyone has any further info.

BlueXJ

Only ignition upgrade I have heard about that accomplished much of anything is the Jacobs ignition system. They are a little pricey but their testimonials from some other forums seem promising. HERE
It seems that they have been bought ou by Mr. Gasket along with several other smaller companies.

Howler_GT

GM HEI's can be modded to FIT into any motor.

Example: 1982 Chrysler 5th Ave 318 w/auto



**Howler's handiwork. GM HEI head grafted onto Mopar dist. base with machined shaft. Cured all hard starting/ wet starting and Lean-Burn Computer isses (it replaced Lean-Burn) I made several of these units. The one pictured ran for over 60K after I sold the car. 5th Ave got hit hard in rear. Owner removed drivetrain and junked car.**

FITMENT is one thing WORKING PROPERLY is another. I am unsure at this moment if there is wiring compatability -OR- if this system would cause computer to fault or give an annoying CEL/SES light.

Might want to check with Davis Unified Ignitions (D.U.I. for short...)
Thier systems are what originally gave me the idea to try what I did with that 5th Ave. That and I didn't feel like forking over almost $400.
Guess Im a cheapo that way.

Did this answer the question??? Probably not.
But at least it was a good excuse to post some pic of my work.
Bad Howler, baaaaad, badbadbad.

okcjeeper

Answered enough to know I have no desire to screw with it..