Wrong heads for a 273

toolmanmike said
It would be interesting to know what the limit the 273 bore and stroke has as far as port flow. It can only use so many cfm and there's no reason to have more that can't be used. You would need to run a 273 at 8000+ rpm to use all that flow. All the manufacturers have done it. Boss 302, 302 Z28 Chevy, etc. If I ever have a reason to pull my heads I hope to flow them just to see what they will do.

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I think 8000rpm would be a kick in the pants.

I'm going to ask the gentleman I got the motor from, a few details about the motor in the silver car next week if I can get hold of him. I know he built that injection system from scratch, but we didn't discuss the guts of the motor such as the cam timing, heads, etc.. Supposedly was making about 400+hp back in the late sixties on motor alone, but probably not regular gasoline. The cubes limit the peak HP but it could still be a fun engine in a light car.

This is sorta like when I go to a gun show and run across a great deal on a set of reloading dies and cartridge brass in a caliber I don't have, so I buy it. And then I go find or build a rifle in that caliber so I can use them. Now I have a motor, and I'll just have to find a light A-body to put it in at some point.