HEI wires

Anyone know if a computer controlled EF HEI can be used for an OF conversion. Sparky and I just noticed a four pole plug that is not present in other HEI pics. I have indicated where the wires come out of the distributor by orange in this pic: The pickup assembly wires seem like they will hook up the same, but are there other possible issues?

 

This is a pic from cjoffroad's write-up, not the one we are working on.

 

does the comp. controlled unit have a vacuum advance? me thinks not....could be a problem

 

It does have a vacuum advance....

 

A wrecking yard guy told me once that the computer controlled HEI had an extra wire coming out of it. What it's for I couldn't tell you.

 

all hooked up and no spark making it to the plugs. Where to begin diagnosis? The power is hot into the cap. Could this be an ESC issue as Patrick stated, or something more simple? Is it possible to buy a new module that goes in the distributor or do you have to buy a complete assembly?

 

is this it?

BWD Ignition Control Module/Unit
1 per car. CBE4P Each $24.99 N/A
USE CL80 HEAT SINK COMPOUND ON ALL METAL SURFACES OF MODULE LIMITED LIFETIME WARRANTY

or this?
BWD Ignition Control Module/Unit
1 per car. CBE4 Each $30.99 N/A
USE CL80 HEAT SINK COMPOUND ON ALL METAL SURFACES OF MODULE LIMITED LIFETIME WARRANTY

or this?

DEL Ignition Control Module/Unit
1 per car. D1906 Each $32.99 N/A

 

FYI----- I bought a new ignition module (NAPA part number TP45SB, asked for '75 Buick apollo 231 V6) and replaced the old (presumably ESC) module. My jeep got spark, fired right up, and runs like a champ. So, you can use an even fire HEI from a 231 Turbo with electronic spark control, provided that you follow these directions:

http://www.cjoffroad.com/writeup.asp?WU_ID=21&noAdd=1

and also replace the module. My parts list all from NAPA is:

RR194--distributor cap
RR173--rotor
RR204--coil ground strap
2930---8mm plug wire set
IC18SB--ignition coil
MP105--pickup assembly coil
TP45SB--Ignition module

for a grand total of $115, plus the $35 I gave for EF distributor=$150

I used a 3/8 x 16 thread 1.5" button head bolt from True Value for the intake bolt


Many thanks to Sparky, New Belgium Brewing Company, and Coopers Brewing Company 8)