HEI firing order & installation? - Team Camaro Tech
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post #1 of 3 (permalink) Old Mar 23rd, 03, 12:01 PM Thread Starter
Join Date: Sep 2000
Posts: 80

Need to be sure I'm hooking up the ignition wires from an HEI to a 327 correctly. Is this right:

1.) Engine @ TDC - end of compression cycle.

2.) HEI #1 terminal is the one just below the wire connection housing looking down on the HEI.
Make sure rotor is pointing & this number one
terminal when HEI is installed in engine.

3.) Going clockwise from this terminal #1 is #8,#4,#3,#6,#5,#7,#2.

4.) Hook-up ignition wires from these terminals to correct firing order on engine starting w/ #1 @ front driver's side & you are done!

Thanks for the help,

Sgrouse is offline  
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post #2 of 3 (permalink) Old Mar 23rd, 03, 12:18 PM
Senior Tech
Join Date: Nov 2002
Location: Vancouver, USA
Posts: 10,511

When you are starting from scratch, it really doesn't matter which post on the cap is #1 - if you have it set up as you do, put in the distributor and wherever the rotor is pointing, THAT is #1. Wire clockwise from there, 1,8,4,3,6,5,7,2. For the sake of convenience, I use the post that is just left of center (driver's side) at the front of the cap as #1. I'm pretty sure the factory did it that way, and it really makes sense if your plug wires are cut to length and routed as such. I like to shine a light in the dist hole and make sure the slot on the oil pump drive shaft is in line with where I want the rotor to point so that the distributor completely seats.

If you are converting from your old points dist, make sure you are using a keyed 12 volt power source to the coil. Your old wiring to your points dist used a resistor wire and only delivers around 8 or 9 volts to the coil...not a good set-up with HEI.

One final note...the cylinders on the driver's side, front to back are 1,3,5,7 and on the pass side front to back are 2,4,6,8.

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post #3 of 3 (permalink) Old Mar 23rd, 03, 01:33 PM Thread Starter
Join Date: Sep 2000
Posts: 80

I bought a engine new wire kit from NPD that is set-up for an HEI. Has the plug and everything. Can I skip the wiring directly to the fuse box trick?
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