[lts70]

May have found a set of 68 350 HO #18 heads. But he wants $450 for the set and he doesn't believe they are screw in rocker studs. those work good with the 69 HO specs? Bad price?

[SD455DJ]

Originally Posted by lts70

May have found a set of 68 350 HO #18 heads. But he wants $450 for the set and he doesn't believe they are screw in rocker studs. those work good with the 69 HO specs? Bad price?

Buy those heads! As B-man said, they are quite rare and all you really need to do is to have the press-in studs pinned. I have 2-sets of small valve heads where we just had the studs pinned. One set is '70 #15's for the YH 455 and the other are '70 #16's for a 330 hp 400. The 455 has a Summit 2802 cam (224/234/114 at .466"/.488" lift) and the 400 has a Summit 2801 cam (214/224/112 at .444"/.466" lift). I shift the 455 at 5200 rpm and the 400 at 5600 rpm without any studs pulling out or breaking. I wouldn't go much higher than a .488" lift cam with pinned studs and the valve springs have 120 lb seat pressure and 270 lbs. open at .488". That is if you decide to keep pressed-in studs. It never hurts to convert to screw-in though.

I would use the Summit 2800 cam (204/214/112 at .422"/.444" lift) in a 350 as it is similar to the 067 factory cam that came in the '69 350HO engines with the TH400 trans.

Dennis