what spark plug should i use

[jdcook]

I have a 4.3l v6 that I have been running, and I have been using ACMR43T plugs in it. However this year we added new cam, rocker arms, intake manifold and a 4 bbl carb. My question is should I run a hotter plug than the 43T, I was thinking 44T or even a 45T. <br />any suggestions

 

[Bondo]

Re: what spark plug should i use

Nope.............<br />Stick with the 43s,+ Tune the Carb to them..........<br /><br />No Reason What so Ever to go Hotter.........

 

[Trent]

Re: what spark plug should i use

Im with Bondo...No reason to go hotter.

 

[Cobra SX]

Re: what spark plug should i use

If you go hotter your will just burn stuff up.<br />BUT are you running a igntion and/or Coil? It would very much help extra fuel from the new carb burn good, you could run your gap a little bigger on that same plug.... it would help all that stuff

 

[anesthes]

Re: what spark plug should i use

If the camshaft has different specs, it will change the valve timing and final compression of the cyls. You can't tune a carb to compensate for that, if its too far one way or the other. <br /><br />Assuming you used the same spec camshaft, you should prolly use the same plugs.<br /><br />-- Joe