I am upgrading from a 2# to a 5# pulley, and new chip. I read old posts about which plugs to use, looking for new opinions/experiences...
TIA.....JR

 

I have the 5# pulley, and am using the Denso IT-22s gapped at .038. No detonation noticeable even on the hottest days down here, so it seems to be working pretty well.

 

I ran Denso IT 20's with my 6lber for awhile, I then went to IT24's. I think 4lb is the reccomended limit for the IT20's but you may be ok with them. I would use Denso's for sure. Not many problems have showed up from guys using Denso's....

 

2Cool, ICULOKN

thanks for the replies...I ordered Denso IT24's from Sal this morning....JR