DS II and Holley 1940

Shelly6

Active member
Hello,

been searching the forums and posts -- I'm sure the answer to this question is out there but I cannot find it. I pulled all DS II stuff out of a 79 Farimont yesterday. Everything. And the head. And the Holley 1946.

Is there a way I can use my existing Holley 1940 with the DS II? It's correct for my 1965 if that helps identify the what version it is.

thanks in advance,
 
Found it! Seek and you shall find..... :beer:

Bubba did all the work for us on this already. Thanks!!

There a number of ways to wire a DuraSpark II system (DSII) depending on how much rewiring of your car you want to do.

Here is how I did it on a number of early cars and trucks that is very simple and it keeps and uses all the original wiring only adding one or two new wires. Also if you should ever want to return to the stock system it's easy to change back.

1. With the new DSII Distributor installed its 3 Wire socket plugs into the DSII wire harnesses 3 wire plug and then you can start to route the DSII wire harness.

2. The Ignition Control Module (ICM) gets mounted to the inter fender panel and the DSII harness 4 wire plug goes into the ICM 4 wire socket. Some people run an extra ground wire to one of the mounting screws if the inter fender panel is made of metal it probably isn't necessary but it won't hurt if you want to.

3. I used most all of the stock vehicle wiring including the Pink Resistor wire that goes to the Bat. Or + Side of the stock Ford coil. This Pink wire goes right into the DuraSpark II coils Red wire hooked up to the Battery or + side of the new DSII coil. Also the other wire coming from the I terminal ( for extra voltage when starting) of the starter solenoid goes onto this same + Red wire.

4. The DSII horseshoe clip is made so that the Green wire coming out of the DSII wire harness plugs onto the Tach or the - side of the coil, so you just plug it on as is.

5. The ICM 2 wire plug socket is plugged into the 2 wire plug and has a Red and a White wire coming out of it. I ran a new wire connecting this Red wire and splicing it into the Pink wire about 2 or 3 inches under the dash behind the ignition switch so it's before the Resistor in the Pink wire, I even used a Crimp On type Splice Connector so I didn't have to cut any of the original wiring harness. If you have a Volt / Ohm meter probe the wire there you are looking for at least a full 12 + volts with the Key on in the Run position as the ICM needs a full 12 volts to run correctly. This is all you really need to make it run and many people don't even bother to hookup the White wire. The White wire though is the Ignition retard feature of the ICM and is a good idea to hookup. To do so just run a new wire connecting the White wire over to the S terminal of the starter solenoid and now your all done and can Enjoy all the benefits of the new DSII system. Good luck.
 
Hi, the simple answer is yes, if you are just doing the ignition upgrade for now. Be aware very early distributors used a small 1/4 inch hex drive, if that is what you have the answer changes. If your old distributor is 5/16 hex drive it is all compatible. You will have to run your vacuum from a direct intake source, and block the old vacuum tube. The newer head has a larger flange so the carbs are not interchangeable until you swap the head. Get the Falcon Performance Handbook for all the reasons to swap the newer head and much more Ford six info. Good luck
 
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