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Old 07-01-2007, 10:24 AM
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HEI Wire Positioning


I'm installing an HEI distributor on my 355 Chevy and I need to know what the #1 wire position is supposed to be.

I've got my engine at TDC on the #1 cylinder - both rockers are loose and I used a piece of paper towel stuffed in the spark plug hole and tapped the engine around until the towel popped out of the hole. I've got the timing mark on the balancer at 0 degrees.

When I put the distributor into the engine, with the vacuum advance canister on the passenger side pointing slightly towards the pass. side front tire and the wires from the module pointing straight towards the front of the car, when the the distributor bottoms out, the rotor is in the 7 o'clock position which puts it pointing at the 3rd plug terminal.

I've read that the #1 plug terminal is the 1st or the 2nd terminal after the snout where the plugs go, not the 3rd.

Should I just set up my plug wires starting with the 3rd terminal as the #1 or do I have a problem?

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Old 07-01-2007, 10:33 AM
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Position the body of the distributor where you want it for clearance ... and appearance. The #1 plug wire position can be anywhere of the 8 available ...

After getting the body where you want it ... index the rotor to be under the number 1 position you choose ... then make the rest 1,8,4,3,6,5,7,2
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Old 07-01-2007, 12:15 PM
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Thanks. I don't what happened, but I redid the whole procedure. Set it at about 8-10 degrees advanced on the timing tab (that's just where it happened to land when I was tapping it around and I left it there), put the cap on, put the plugs on in the standard position, and it runs fine.

I was doing all this because I installed a new carb. It's a new Mighty Demon 650, so I need to do all the tuning, but it runs pretty nicely right now. Low levels in the bowls, no idle mixture adjustment and idle set at around 1200, it drops to 1000 in gear and it sounds ok.

Anyway, thanks again.
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