The first three photos show the difference between a 6.1 and a 5.7 head. The first being the intake port and the second being the exhaust port. The third is obviously the combustion chamber. The 5.7 head has 2.02/1.57 valves and the 6.1 head has 2.10/1.60 valves.
Having seen the PPP heads "in the flesh" I gotta say they are simply gorgeous! The attention to detail is incredible! A lot of thought and a lot of effort go into these.
Looks to me like a huge overstock problem. You guys better slash prices quick to move some of those. Anyone in on a buy one, get one free group buy?
