This one has a 2 inch journal. It has about .040 clearance to the lobes on the back four cylinders. The front four don’t get as close. A 2.100 rod would not clear in this engine. A 4.400 is as big as I have been able use with a 2.100 crank pin.
Joe, you are in the ballpark on lift. The heads flow to 1-inch, and the ports are really big. A little too big in my opinion. I think the cross section is just about right for 600 inches, but it sure does come to life about 5500 rpm. It is extremely long winded for the duration it has now. A big boy cam would put peak power at over 8000 rpm. Kinda makes me draw up a little to think of turning a 4.5 crank 8500 through the traps, lol. It’s a neat combo like it is, and the valvetrain is all stuff that has worked for us before in Drag Week. One thing about this cam being smallish for port and cubes is that it makes the torque and power curves really broad. It gets near peak power at 7200 and just stays there past 8200. Should be a neat piece for Jack and Scott to work with.
Topic: 541 cubic inch FE drag and drive (Read 752 times)