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goinbroke2 · 12-16-2011, 12:40 PM

Did some searching and gt40 were on explorers to 96. In 97 they went to gt40P heads.
As far as headers, the ones I have now are not optimal so I will be building a set of 1 1/2" primary approx 38-40" long. I'm leaning towards tri Y and possibly crossing pipes under car to have 180headers. Lots of idea's, now to find the engine! Nothing around here but there HAS to be explorers in the junkyards. I'll do a search after I get back from BC.
(hmm, check out the junk yards in BC while on Christmas vacation?....bet THAT won't go over good with the ol lady hehe)

Perhaps this is a dumb question but I also saw the higher lift in the IHRA spec's online and assumed (like a stocker) I could run any duration. According to Georges sheet, the lift is lower and there are spec's on the amount of duration. Is part of the crate motor spec's the exact cam you must use (not just lift)?
Must I use the F4TE-6250-BA cam or any cam with the same lift?

12-16-2011, 12:40 PM	#7
goinbroke2 Senior Member Join Date: Mar 2002 Location: NS CANADA Posts: 899 Likes: 1,673 Liked 397 Times in 156 Posts	Re: lOOKING FOR SPEC'S 302/215@240 Did some searching and gt40 were on explorers to 96. In 97 they went to gt40P heads. As far as headers, the ones I have now are not optimal so I will be building a set of 1 1/2" primary approx 38-40" long. I'm leaning towards tri Y and possibly crossing pipes under car to have 180headers. Lots of idea's, now to find the engine! Nothing around here but there HAS to be explorers in the junkyards. I'll do a search after I get back from BC. (hmm, check out the junk yards in BC while on Christmas vacation?....bet THAT won't go over good with the ol lady hehe) Perhaps this is a dumb question but I also saw the higher lift in the IHRA spec's online and assumed (like a stocker) I could run any duration. According to Georges sheet, the lift is lower and there are spec's on the amount of duration. Is part of the crate motor spec's the exact cam you must use (not just lift)? Must I use the F4TE-6250-BA cam or any cam with the same lift?