Using another calculator i have that only uses rpm, ci and BBDC value -

Your Primary Tube Length is 33.26
Your Primary Tube Diameter is 1.95 inches
Your Collector Length is 16.63 inches
Your Collector Diameter is 3.71 inches .


"Turbo will be easiest, and at the HP level will also be easiest on parts. Spend the money to do it right, and you can build a 500 HP street motor that will live a long and happy life, and probably with a very basic short block." Those words must have left a bad taste in his mouth!