[jak]

this is what i have gleaned from years in the parts business. People always call and ask which head should i put on my car. The first question i ask is what is the babbit like on the bottom end. If you put one of those heads on and the babbit isn't good you will beat the babbit. I cannot tell you how many guys i talk to purchase either the 5.5 or 6:1 head and a couple of weeks later call and order a bunch of engine parts because they beat the babbit out of the bottom end.