David Vizard, Uncle Tony's garage, Unity motorsport. Mission impossible Dodge 302 Head porting

273 said
Only build I could kind of see them on is a 273 but even then probably still worth going 360 like 66fs does.

I saw them on 370 cubes........No problems going over 6000 RPM. As a matter of fact they had no problem going 6000 RPM when they had a 1.84 valve in them either.

Guess you can't really say unless you've tried it..........