GT40p heads

Jeff Chambers · 01-03-2001, 10:37 AM

The blower would help in forcing air past the small valves, but again, for the higher horsepower applications you'd be better off with another head. I could see using the P's on a mild street application with maybe up to a 9psi blower (with a small cam), but anything over that and I really thing the P's become an obstruction. You've got to think of the P head as an improved stock head. If you're really going after major power increases, you've got to reduce the obstructions by going with larger ports and valves...like with the TFS or Dart heads. By the time you spend your money on the P's with serious work for high HP (such as larger valves, valve guides, stage II or III port work), you're only going to get flow equivalent to an out-of-the-box TFS, AFR, or Dart head. I love the P's, but if I weren't restricted to them by the class rules, you can bet I'd be running something else.

------------------
Jeff Chambers
Trophy Stock #3
11.97 Seconds / 114.5 MPH
http://www.kellnet.com/chambers

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01-03-2001, 10:37 AM	#11
Jeff Chambers Moderator Join Date: Aug 2000 Location: Milan, OH Posts: 2,699	The blower would help in forcing air past the small valves, but again, for the higher horsepower applications you'd be better off with another head. I could see using the P's on a mild street application with maybe up to a 9psi blower (with a small cam), but anything over that and I really thing the P's become an obstruction. You've got to think of the P head as an improved stock head. If you're really going after major power increases, you've got to reduce the obstructions by going with larger ports and valves...like with the TFS or Dart heads. By the time you spend your money on the P's with serious work for high HP (such as larger valves, valve guides, stage II or III port work), you're only going to get flow equivalent to an out-of-the-box TFS, AFR, or Dart head. I love the P's, but if I weren't restricted to them by the class rules, you can bet I'd be running something else. ------------------ Jeff Chambers Trophy Stock #3 11.97 Seconds / 114.5 MPH http://www.kellnet.com/chambers