360 magnum head flow Find Parts and Accessories and get Trick Flow Makes Serious Horsepower! 1-330-630-1555 • 1-888-841-6556. Now many competent porters will tell you the Magnum head could be worked well to support 250 cfm, but the narrow pushrod pinch could only be worked so much. 344 Intake valves 1. 92 valve. 273s have 318 ports and 340s have 360 ports. 9L), but the sump locations based on the vehicle tend to be unique. Head Gasket: Fel-Pro #1008. Joined Dec 2, 2009 Messages 314 Reaction score 167. The magnum heads are drilled and tapped 90 degrees to complete horizontal, Like straight up and down to earth level. 02-inch intake valves. taxolghavwpxeoyzmuifttopjftqqheardazrkbirmrglgnvlwgfzhtddczxxemrxdpfguymyyuduw