[QUOTE=Steve Barcak;4507477]This 455 engine project for my '61 Safari is definately evolving. Last week it was going to be a 6X 068 1.5 rocker deal. Now am leaning toward a set of small valve heads and trying a tiny cam like the 066 or even the '59-'63 2bbl cam.
Of course, these things can all be changed if I am not happy with it.
On the early heads being closed chamber- true. However, I can modify them to an open chamber design and get a more attractive chamber size too for my displacement. I opened and cc'd chambers on 670 heads in the mid 80s and also opened the Super Chiefs on my Fueler.
A few days back , I brought in a pair of #15s. They tore them down and one head had a 30 intake seat, the other had a 45 seat! uh.
Now going to look around my yard tomorrow for a pair of small valve heads. Will pull them off and get them into the machine shop. I'd prefer not to have to buy a new set of valves for the little buggers. We'll see.
Also would like to try a sp2p as well.
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Steve, the #529472 (D) cam which is the 59's 2bbl. 10.0 comp.280HP automatic, 60-64 283 hp 10.5 comp.automatic is exactly the same grind as the 97779066 (N). I would still suggest the smaller (U) cam and it works with high velocity small valve heads. I had a set of 15's on my 455 for a while, but I needed 5gals. of aviation fuel to 15gals of 92 premium to keep the 10.0 compression from detonating although you could use dished pistons.
D.
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