I have a few sets of the ac 43,s what i would like to know is a very good plug to run in the 1969 z28 302 for a little fun getting down the road, merry christmas to ever one and a very happy new year FV3
Last edited by chevyshowman; Dec 26th, 08 at 06:19 PM.
Reason: NOT RESPONDTING
43's will foul fairly quickly in normal street operation in a 302; I don't race mine any more, and I run R45S plugs in normal driving with no issues at all; I encountered minor fouling with 44's. Others may differ.