When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
So with mine carring a couple hundred lb of tools and equipment and 130+ K on the 94 5.2 I should be happy with 16 to 18. Its a heck of a lot better than the Ford 5.4 that threw a plug cause Sons fantastic mechanic didnt torque e., oh forgot Ford gets 9 to 12, but it weighs in just under 4 ton.
Found some Autolite 3924 copper plugs on clearance for $.72 for a two pack. Thought I might give them a try on my next tune up, can't hurt for the money. I have the stock Champions in my truck now.