Colder plugs for 7.4?

I've done quite a few mods on my 7.4 and it looks like I need a colder set of plugs, but i'm having problems finding any for sale, can someone recommend an online source? I'm burning thought plugs in under 2k ;)

Thanks,

Craig

try this website
www.truckperformance.com

Thanks for the link.

I had a look but it does not look like they stock spark plugs at all, I am starting to suspect no one makes colder plugs for this engine, which could be a bit of a problem for me...

What brand of plugs and what year engine.
AC-delco drops from a 44 heat range down to 42.
Try getting a spark plug book and check the heat ranges and drop down 1 or 2 heat ranges.
MT