Re: Info on spark pluge

Posted by 55PackardGuy On 2014/6/24 21:04:21

Very appropriate topic for me right now. Similar situation, 327 engine, (54th Series), what plug to use?

THE SPECS SAY:

Champion J8, 14MM .023-.028 gap

OK, not much selection there, so 26th series, 1953:

Champion J8 etc. etc. (same gap)
Autolite A5 same gap
AC-46-5 same gap

These are listed across the board for all engine sizes for 26th Series.

WHAT I FOUND IN NAPA WORLD:

The only crossover found (for what it's worth) is an AC-R45.

Guess what plugs were in it when I got it? AC-R45. (Also a full set of used "spares in the trunk" AC-R45.)

So that's what I bought.

The problem sort of solves itself based on what's fairly close to the right part and is available over the counter.

Anything anyone could add would be much appreciated. I especially would like to know if those metal rings on the plug base should be left on or thrown away. Are they worth anything?