Y-block Spark plug wiring positions through grommets and clamps


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By bergmanj - 6 Years Ago
Folks,
Some time ago I "ran-into" information about how to route spark plug wires through the grommets/clams in specific positions to minimize potential for cross-firing.  I can't find that info. anywhere now.  Does somebody have the directions/drawings/tech service bulletin information that you can supply on that subject?
Thanks,  JLB
By bergmanj - 6 Years Ago
Bump.  What? Nothing??

Thanks, JLB
By Tedster - 6 Years Ago
Here's some pics that I found useful from Ted Eaton and others. Should get you going anyway.

 

 

 

By Ted - 6 Years Ago
Here’s the wiring orientation for the spark plug wires from the CASCO site.
http://forums.y-blocksforever.com/uploads/images/460f6e43-dbdb-498e-9c8f-2a09.jpg 
  
Here’s the link for the full size version.
http://www.classictbird.com/pdf/12259ab.pdf
By Tedster - 6 Years Ago
Ted, thanks for posting that. But, there ain't no way no how I'm gonna go out and check and swap wires around in those $&&!@?! things lol. Once they are installed they are great, other than that I hate 'em. That "cheat sheet" to get them setup is the bomb though!
By 56-79C - 6 Years Ago
bergmanj--

Here is an item from Service Letter P-297, dated Feb 28, 1956.

I ran across this after I replaced my wires in the new looms per the instructions in the shop manual, which appear to be the same as the Casco instructions. I havent had any misfiring, but if my 56 292 seems to be idling a little rough, I wonder if I should make this change. But then I look under the hood and remember thinking that whoever designed the Y block wiring and looms etc should be shot. Maybe there's more room to work on a Bird, but it's painful in a pc. Anyway, take a look at the Service Letter item:

http://forums.y-blocksforever.com/uploads/images/f4c5df80-e5f2-4599-b78b-e94d.jpg
By KULTULZ - 6 Years Ago
That SERVICE LETTER is nice to know if you use a hot ignition.
By bergmanj - 6 Years Ago
That's the one!!!!

Thank you very much!

I hope that this also helps others.

Thanks again, JLB