John- If your engine is using the smaller plugs, I would suggest a set of 25s. I prefer Autolites, but Champion makes them also. These should fit your heads and have the appropriate heat range.
Devin ----- Original Message ----- From: "John Nasta" <[EMAIL PROTECTED]> To: <Chevelle-list@chevelles.net> Sent: Wednesday, July 26, 2006 6:49 AM Subject: Re: [Chevelle-list] spark plugs > Thanks. I am not sure of the exact year of the heads but I was told > early 1970s. They do take the smaller plugs. > > John Nasta > > Quoting Devin <[EMAIL PROTECTED]>: > > > John- The question is, what year are your heads? Chevy went to the small > > "peanut" plugs in about 1970. I would suggest you buy the plugs appropriate > > for your heads and them gap them for the HEI, being about .050. > > > > Devin > > >
