Great to see photo's of the new heads. Similar combustion chamber shape to other aftermarket heads I've seen for other american iron. Better combustion chamber size, decent dia valves, plenty of "meat'"to shave and up the compression, improved ports with better flow and all within the confines of using as many existing parts as possible. Seems to answer just about all anyone would want or expect. Good work John.
The photo's (that I've seen) only show three sides of the heads! Some of the intake side would be great?
On Dyno testing this is obviously a testing ground where they can show thier worth. I for one would be interesed in seeing a milder street engine tested as well as a hotter race engine. Obviously not every application can be tested but this would give a reasonable range for customers who would be interested.
Also on reliability is a set of heads going to be tested on something that is regularly driven. Obviouly racing shows how they will perform (last) in the high temp high pressure environment that racing is, but daily driving has it's own set of extremes. Multipule warm up and cool down cycles, traffic, lugging loads I can see that these heads could be used in many applications, as many as there are Y block interest groups and be used in T birds, F100, trucks, a range of passenger cars from rods to full size cars. I'm wondering how reliability will be tested?
Grizzly (Aussie Mainline)