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Old 10-17-2019, 08:20 AM   #5
Katrina/10
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Join Date: Oct 2010
Location: Ocean Springs, MS
Posts: 1,746
Re: Plug Wire Lengths

Quote:
Originally Posted by eric8 View Post
Well for what it's worth, I did some digging and found a post on another site that said for a sbc, the plug wire lengths generally go in the following order (from longest wire to shortest wire): cylinder #'s 3,2,1,4,5,7,6,8

I used this method and the wires look good.
I put some wires on my truck just a couple days ago, and ran into the same thing. Always a box full of unmarked wires, no indication where they go. I didn't think to look on the internet to see if there was a recommended sequence for length, that was a good idea!

I tried to guess which ones would go where by laying them out on the floor by cylinder location, it didn't work perfectly, but helped. I did find that the longest one worked best for number 3.
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1971 Chevrolet C/10
1951 GMC 100
1977 GMC C15
1955 Chevrolet 3100
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