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Discussion in 'Engine Topic' started by PHROG, Sep 14, 2021.
Has anyone here tried a Pertronix D72000 in the OEM HEI used in the ZZ4?
I had one of those modules in a Mallory distributor (stock type), it went south in short order. YMMV
I'm not sure there's a lot of benefit to the module swap on that distributor.
What are you trying to accomplish?
Pertronix claims the module will give multiple spark at lower RPM like a CD box. Ultimate goal is the best possible fuel mileage in a 34 Chevy coupe that cruises at 2500 rpm/75 mph.
I seriously doubt you could do an effective multi-spark with a unit that small. Petronix is known for enthusiastic advertising on its ignition products.
If I was doing an HEI build out - this is what I would use
The HEI's biggest weakness is heat buildup. Moving the coil off the cap deals with that.
That said, for most street motor's a properly tuned HEI (with a good curve kit) is more than up to the task. You'll probably find more efficiency with dyno tuning than part-swapping
and removing its module from the hellacious oven it's in and mounting it remotely on a heat sink ...
as GM did on later trucks w/ L30 & L31 V8 & L35 V6
$12 solution to a $400 problem, I like it.
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If I didn't live in the land of brokerage fees and half price money, I'd buy one of these today: https://progressionignition.com/
Get the small cap one with separate coil, dial in your timing specs and go.
oooohh I like that
Oh heck yeah, now that's what Santa needs!