Bob & Sue 110 Report post Posted January 24, 2018 I posted this on VMF this morning. I've looked all around can't seem to find a good answer on how to re-curve a Duraspark II dizzy.I believe all you need to do is remove the reluctor to get at the springs is that correct?This setup will be:1) Duraspark II 76 I think with steel gear.2) GM Ignition Control Module mounted on a 3"x4"x3/8" heat sink.3) MSD or Accel 12volt 45,000 to 50,000 Coil.Any suggestions would be appreciated. Quote Share this post Link to post Share on other sites
RPM 1,190 Report post Posted January 25, 2018 With all the traffic vmf gets you'd think someone there would know. Quote Share this post Link to post Share on other sites
1969_Mach1 333 Report post Posted January 25, 2018 I'm sure you can find some information online. Crane makes a spring and adjustable vacuum advance kit for the Duraspark distributors. I have seen them on Summit Racing's website. If it's a 1976 distributor it will have a cast iron gear. Ford started using hydraulic roller cams in their small blocks in 1985. You will need to change the gear if it needs to be steel. FYI: If replacing the gear, do a search for Ford Racing's instructions. If you purchase a MSD brand gear, they usually have instructions. The distance from the distributor mounting surface to the bottom of the gear is critical. If you merely line up roll pin holes it will likely be off. This can damage the distributor, distributor gear, cam gear, or worse the block. Quote Share this post Link to post Share on other sites
shelbyshelby 52 Report post Posted January 26, 2018 The weights under the plate also get changed. IIRC the weights have a stamp on them, meaning degrees of advance. They are interchangeable and the distributor should have two different sizes already installed. Maybe that helps you get a good search idk. 1 Bob & Sue reacted to this Quote Share this post Link to post Share on other sites
Bob & Sue 110 Report post Posted January 26, 2018 Thanks for all the replies my question was do you need to remove the reluctor to change the curve, I have the answer now you do. It is a 76 Duraspark II with a steel gear on it. Quote Share this post Link to post Share on other sites
Mach1 Driver 560 Report post Posted January 26, 2018 http://www.reincarnation-automotive.com/Duraspark_distributor_recurve_instructions_page-2.html 1 Bob & Sue reacted to this Quote Share this post Link to post Share on other sites
Vicfreg 773 Report post Posted January 29, 2018 I have a late model Duraspark II setup from a 1985 Mustang GT on my 302. This was recommended by Ford Motorsport technicians. 1985 was the only year for a carbureted 5.0, and the distributor and ignition box setup works great, and is designed for the higher revving roller cam motor and cam. Painless sells a wiring conversion kit to allow use of the "horseshoe" coil connector with your stock wiring harness. I used a MSD blaster coil and eliminated the infamous "pink" resistor wire. My Duraspark module has the "blue" plug, which is also known as the Ford Part Number "DY184". This is the non-California" module... Got the distributor and box from Autozone. Quote Share this post Link to post Share on other sites
Vicfreg 773 Report post Posted January 29, 2018 Oh, the other advantage of the Ford box is that it has a spark retard-on-start feature that makes it easier to start. Quote Share this post Link to post Share on other sites
