The HEI I used was a Cardone rebuilt unit from Checker Auto. But as someone said, it's different from the 235 unit. However, there are many different conversion kits. If your distributor and coil are in good shape, I'd go with a Pertronix setup. They're only about $70 and work great. I changed the distributor because the bushings were junk. Mallory makes an HEI conversion unit, but I'm not sure they have one for an I6. But they're out there.
I finally got mine running by using the "hold yer finger over the #1 plug hole while turning the motor over" method. Turns out that I had stabbed the distributor 180 degrees out (as usual.) If the laws of the universe are holding true, there's somebody out there who gets 'em dead nuts on everytime, cuz I always seem to get 'em 180 out the first time.
Anyway, I connected all the stuff up, jumped in, and it fired up on the 2nd crank. Runs great now. I even bought it a Christmas present of some Indian blanket seat covers (
http://chevyasylum.com/64c10/64C10_045r4.jpg).
Now all I need is to drop 4 inches or so it front and rear, add the AFB 4 barrel carb and split exhaust headers with glasspacks, paint it semi-gloss black with red wheels and a soft tonneau and we got a rat rod pee cup truck. Should make a great pit truck on the salt flats next year.
More fun than an old man otta be allowed to have.
Ray
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http://chevyasylum.com/64c10/64C10_047r4.jpg[/img]