You need to cc the heads. Chamber volume varies a lot.
not all the 305 heads are worth using.
a 283 will need a stiff gear and very high stall. 10" 3500++stall at minimum
a 8"-9" full race is not too much converter.
624 heads have a very large chamber.
That cam wants 10:1 cr +. 283 w small dome and thin gasket needs a 55cc head.
measure the finished heads and mill as required.
degree that lunati cam and move it to a 103-104 intake C/L
Last edited by F-BIRD'88; 03-12-2012 at 03:18 AM.