MustangWorks.com : Ford Forums - View Single Post - Do GT40Ps off Explorer have EGR holes in heads?

Fox Hound · 10-18-2002, 11:12 AM

I've read somewhere that only the early '97 Explorers came with GT40 heads. After that, then all came with the Ps. You might want to check the casting for marking to be sure. The GT40P will have "GT40P" stamped on it. I think I will go for the Ps due to better exhaust ports.

10-18-2002, 11:12 AM	#8
Fox Hound Registered Member Join Date: Nov 2001 Location: Bay Area, CA Posts: 58	I've read somewhere that only the early '97 Explorers came with GT40 heads. After that, then all came with the Ps. You might want to check the casting for marking to be sure. The GT40P will have "GT40P" stamped on it. I think I will go for the Ps due to better exhaust ports.