Fats, the correct PES squared off lumps(not teardropped) are being used in conjunction to the PES intake manifold that has the raised floor. Since much of the ebay marketing in the past has suggested that teardropping the PES is not the correct procedure for using them, even though it is claimed to still be superior to the current teardrop style if you do modify the PES lumps that way. Tom wanted to test and see if there was any validity to using them in the manner they(PES)were designed to be used in. So far the main obstacle in using the PES lumps is the PES intake itself. It doesn't appear to be as compatible with more streetable cam/head combos as the Clifford or Offenhauser intakes have shown to be.


Class III CNC Machinist/Programmer