I have a 1980 D-150 225 Slant Six truck. It has an electronic ignition system in it. Does it have the same distributor (P3690788) they sell as th electronic ignition upgade for vehicles that have points? If I do some performance upgrades on the motor do I need to re-curve it? If so how?

I am really new to this, so any help would be appreciated.

There's two electric ignition distributors. One is the same basic design as the Mopar Performance unit with a different advance curve, and the advance curve can be changed by tinkering with the springs and weights. The other is the Lean Burn unit, which has no mechanical or vacuum advance provisions whatsoever. If your distributor has a vacuum advance can, it's the same basic one they sell as the upgrade over points.

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"Mad Scientist" Matt Cramer
'66 Dart - turbocharged 225
My blog - Mad Scientist Matt's Lair

1. *-Single pickup, with vacuum advance and centrifugal advance
   *-Single pickup, without vacuum advance, without centrifugal advance
   *-Dual pickup, with vacuum advance, with centrifugal advance
   *-Dual pickup, without vacuum advance, without centrifugal advance

And that's not counting all the variation in advance system calibration.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Oops. Didn't know about the difference between single and dual pickups. Does one have any advantages over the other?

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"Mad Scientist" Matt Cramer
'66 Dart - turbocharged 225
My blog - Mad Scientist Matt's Lair

The dual-pickup units are used with Lean Burn (and maybe with ESA? Not sure). The single-pickup unit is the preferable unit to start with when tuning.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Mine is the single pick-up, vacuum advance.
I saw somewhere that the distributors have badges on them (Part no.s?)
Could I tell what I have from any numbers on these plates?

Then you're all set to go—now go read all the dist recurving info that's been posted here over the last few years (we've really had some lengthy threads on it...go search "recurve"!) and do your thing.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Dan, I have a lean burn system with a vacuum advance distributor. How can I tell if it's a dual pick up? Also, will it help to convert it over to the GM HEI ignition? I'm want to get rid of the lean burn ignition.
Thanks

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85' D100
225cid
A833OD

Dan, I don't recall ever seeing a dual pickup, vacuum/mechanical advance. What were they used on ?
PS: does anyone have a single pickup, no advance distributer, they would part with, for the cost of shipping?

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

Can't recall off hand. Might've been an early ELB setup.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

If the distributor connector is a single 2-wire item, it's single-pickup. The dual-pickup distributors have a 3-wire and a 2-wire connector. Or pop off the cap and look. If you see something that looks like this, it's a single-pickup distributor:



If you see something that looks like this, it's a dual-pickup distributor:


HEI is a good way to do that!

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Dan, I have a single pick up, would you recommend this distributor for the HEI conversion?

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85' D100
225cid
A833OD

If it's got a vacuum advance (and the vacuum advance is working, then yep!

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Can you only use vacumn advance for that conversion to hei???

It's not that you can "only use vacuum advance" (not sure what you mean by this), it's that you wouldn't want to use one of the non-vacuum-advance distributors.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.