Join Date: Dec 2007
Location: Austin, Tx
Bronco Info: 1984, 351W, 4 bbl, c6, 9 in, 4.88, detroits, 16.5warn, 6 in Skyjackr w/ ext rad arms, 35" Toyos
I tried one of those cheap HEI distributors, but ran into problems with the machine tolerance of the parts, so I went with stock Duraspark and it is good. I was raised on HEI, so I wanted to go with it for my 351w, but I was too cheap to buy one that had decent quality. The one I bought off ebay first would not drop down far enough to engage the oil pump drive, then the replacement drive gear was would not fit onto the distributor shaft. To his credit, the seller refunded my money without delays.
If you google HEI vs Duraspark you will find that all those long cable harnesses from ford actually help isolate electromagnetic interference and allow better cooling. Now I am happy with my stock ignition.
If you are in Austin, Texas, I can help you troubleshoot your stock ignition and get it going for cheap. Stock parts are so cheap that an entire new disrtibutor is less than $50. I learned this after I spent $40 on just the vacuum advance.