Which post on distr is the best for #1?
#1
Which post on distr is the best for #1?
Which post would be best *for spark plug wire routing* to be called #1? Obviously, any one of them can be used to start at #1, but from a routing/crossover point of view (and what did the factory do?), which post would #1 be best from which to start?
I pulled this image from another thread and modified it, so let me know y'all's thoughts by posting where ya think #1 would best be placed for easiest/best plug wire routing. Whichever one is picked, then it is CCW, 1-8-4-3-6-5-7-2 from there.
I pulled this image from another thread and modified it, so let me know y'all's thoughts by posting where ya think #1 would best be placed for easiest/best plug wire routing. Whichever one is picked, then it is CCW, 1-8-4-3-6-5-7-2 from there.
Last edited by rfpowerdude; October 30th, 2023 at 10:57 AM.
#2
I tried to download the image and edit it. My Droid is being dumb.
I thought there was only 1 right way to run your spark plug wires? 1, 8, 4, 3, 6, 5, 7, 2 starting from the distributor cap terminal and going CCW. I guess Chevy guys swap 4 & 7, don't they?
I thought there was only 1 right way to run your spark plug wires? 1, 8, 4, 3, 6, 5, 7, 2 starting from the distributor cap terminal and going CCW. I guess Chevy guys swap 4 & 7, don't they?
#3
That's not the question. The order is not part of this (we all already know 1-8-4-3-6-5-7-2). What I am asking is which post do people typically use for #1? Any one of them can be used for #1 as long as the distr is installed with the rotor pointing at it when at TDC on firing. However, from a plug wire routing standpoint, there is probably an optimum starting point to call #1.
That's what I mean.
That's what I mean.
Last edited by rfpowerdude; October 30th, 2023 at 10:58 AM.
#10
There is probably an orientation that minimizes crossing the wires, but I haven't gone through the exercise of all 8 possibilities. I was hoping someone would say, " do it this way because that's the way the factory did it and here is the routing..."
I'll go through this exercise tonight.
I'll go through this exercise tonight.
#11
Again, ASSUMING you have the rotor in the same orientation relative to the cam as when it came from the factory, yes the factory has a specific orientation for the #1 plug wire. And surprise, it's the one closest to the #1 cylinder.
#14
Does someone have a 1974+ chassis service manual that has a pictorial of the plug wire routing for HEI? Of like Koda said, an actual underhood pic of routing? It's always been crossover messy and I was just trying to find a better way (if that exists).
#15
#20
#23
Thanks Jim, I am very familiar with that physics phenomenon (check my screename haha), I just wasn't sure if anyone had tried a different starting point for #1 to make routing easier/cleaner. I wonder of the Chevy guys have it any easier with the CW rotation...
#25
Joe V., per your post #10 above, the factory installation has #1 on the distributor cap pointing toward #1 on the engine and Joe P. mentioned about keeping 5 and 7 separated much as possible on the standard 2nd gen. Olds V8 firing order; if a 4-7 swap cam the two to keep separated are now 2 and 4. I think your sketch in post #17 may increase the possibility of 5-7 crossfire. I have not used an HEI distributor, but my '67 442 was equipped with the UHV ignition and I never had an issue of misfire even when using the Autolite solid core ignition wires which used to be popular. The UHV would give a solid (per a SUN tune up console) 40,000 volts at the plugs.
#27
Upstate 442, I agree whole heartedly. I only mention that there was no misfire at 40,000 volts, CD ignition, even when using a strait stranded solid core plug wire. The currently available plug wires are way advanced from what we had available back then.
#31
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