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goinbroke2 · 09-18-2008, 12:08 PM

HHmmm, lot of years since I even touched one, but;
2bbl 2.05 int 1.65 exh open chamber ALL (70 some cc I think)
4bbl 2.19 int 1.72 exh open chamber police int head 71-74
4bbl 2.19 int 1.72 exh close chamber adj valve train boss 351 1971 only
4bbl 2.19 int 1.72 exh close chamber hyd valvetrain 351 CJ 1971-74

Memory being what it is, I'm thinking the hyd 4bbl CJ head and PI head might be reversed.

And yes when your running a stockcar and they have a cyl pressure rule, one open chamber and one closed chamber head will give 155psi(165limit) and the open will give 120....until your caught 5 races later...don't ask LOL!

09-18-2008, 12:08 PM	#5
goinbroke2 Senior Member Join Date: Mar 2002 Location: NS CANADA Posts: 892 Likes: 1,646 Liked 393 Times in 153 Posts	Re: 1969 Ford Cleveland heads HHmmm, lot of years since I even touched one, but; 2bbl 2.05 int 1.65 exh open chamber ALL (70 some cc I think) 4bbl 2.19 int 1.72 exh open chamber police int head 71-74 4bbl 2.19 int 1.72 exh close chamber adj valve train boss 351 1971 only 4bbl 2.19 int 1.72 exh close chamber hyd valvetrain 351 CJ 1971-74 Memory being what it is, I'm thinking the hyd 4bbl CJ head and PI head might be reversed. And yes when your running a stockcar and they have a cyl pressure rule, one open chamber and one closed chamber head will give 155psi(165limit) and the open will give 120....until your caught 5 races later...don't ask LOL!