Re: Distributors and advance curves - how many did Packard build?

Posted by PackardV8 On 2010/6/16 22:42:39

I checked my maintenance log. My 56 Exec came to me with AL 66 plugs. Most likely came from Kanter since the former owner bought everything from Kanter.

I bought a set of 45XLS at a local autoparts strore some 4 years ago and those are in the car now. Also bought a spare set on eBay later on.

THe 45XLS deciphered:

"4" = 14 mm.
"5" is middle Heat range (3 thru 8(3 is cold 8 is hot )).

"XL" = extra long reach (3/4 for 14mm).

"S" = Extended Tip (except 7/8 threaded plugs).

Maybe use that info to 'build' a number for plugs from your favorite manufacturer.