<VV> Spark plugz

[Padgett]

>there are also R44F's now.   With resistors in them.
>
>     Since pretty much all of the spark plug wires of
>today are resistor plug wires, would having those PLUS
>a spark plug of the "R"  type be detrimental to
>performance in any way?

Shouldn't., OEM wires for Pontiacs were resistor with R44S plugs

|Also, some plugs also have an "S" at the end.  Mean
>anything?

You mean like R44S or R44FS ? In general the "S" suffix means an extended 
tip plug. Have been told that Corvairs do not like extended tip plugs. "T" 
or "TS" means a tapered seat (no gasket) plug.

The odd thing about the Corvair plug (the "F") is the 1/2" reach (length of 
threads). "FF" were threaded all the way down the body, "F" plugs stop one 
thread short. No suffix letter means a 3/8" reach plug and a 44S has the 
electrode in almost the same place as a 44F but a lot less threads and the 
plug body is shorter so there would be a cavity in the head at the plug to 
collect carbon.

For the rest of the decode, the first "4" means a 14mm body and the second 
"4" is the heat range which goes from "2" (cold - racing) to "6" hot - 
light duty, oil burning engine). These numbers/letters are used by AC only 
and every mfr has their own, some backwards.

For everything see http://www.acdelco.com/html/pi_plugs_ident.htm

So far I have been having good luck with Bosch W8ACs.

Padgett