Marinizing an HEI
 

Other than removing the vacuum advance and venting the distributor body, what else would be required to marinize a GM HEI distributor?

I bought one from DUI years ago and loved it for it's simplicity and reliability. I don't want to spend the $300 per engine when I can buy a new HEI for about $130.

Any thoughts?

Re: Marinizing an HEI
 

I have successfully removed points distributors from boats for years and used the Delco HEI. People love them. Mostly I have done Crusader 454s in inboards, never in a high performance application. I adjust the advance curve with lighter springs and do not use the vacuum advance.
Hard to improve on the Merc Thunderbolt IV.

Re: Marinizing an HEI
 

Thanks Ed, I've got Merc ignitions now and have had several modules fail over the years which is why I want to make the conversion. Plus, the HEI really simplifies the wiring which, on a 29 year old boat really could stand to be simplified.