| Re: Perhaps I was wrong....40HP? For you Tony! |
Subject: Re: Perhaps I was wrong....40HP? For you Tony! by BeachBum on 2008/12/22 16:44:38 To tell you the truth, I had no idea this was even a debated subject..... big gains from a CNC finishing port have always been reality. David Vizard reported a 54 HP gain over cast heads on his testing of a 4" stroked 350 for a 408 motor. I think 40+ HP gains are the norm for motors not restricted somewhere else such as the intake/cam/exhaust. The reason is simple, the finishing port increases airflow substantially..... which usually equals more power. Airflow is extremely important ! I will say, on a TPI motor, the gains will typically only be in the 10-20 hp area due to the obvious limitations of those motors. I don't think this thread needs to be locked.... potential for good lively (but civil & respectful) debate if we all have an open mind and just discuss without conclusions, labels or emotion. |
