I am finally taking my replacement cylinder head to the machine shop for an inspection and freshen up. I pulled out the Performance Handbook to go over everything I wanted to get done and came across a question.
How can I tell if the head is from a 170 or 200? The casting number is C7DE-6090-A. In looking at the chart on page 7 of the handbook, the 65-70 170 head and the 65-69 200 head have the same size valves, and the combustion chamber volumes fall within spec of one another. The difference is in the intake log volume if I am understanding the chart. Is this correct?
The head that I am replacing is a C4DE so it would have the smaller valves correct?
I am planning on having the three angle valve job with the 30 degree back cut on the intake valves done as well as milling the head to compensate for the thicker head gasket. What else am I missing?
I has been a long time of saving my pennies to get to the machine shop so I want to make sure that I get it right.
Thanks,
Kevin
How can I tell if the head is from a 170 or 200? The casting number is C7DE-6090-A. In looking at the chart on page 7 of the handbook, the 65-70 170 head and the 65-69 200 head have the same size valves, and the combustion chamber volumes fall within spec of one another. The difference is in the intake log volume if I am understanding the chart. Is this correct?
The head that I am replacing is a C4DE so it would have the smaller valves correct?
I am planning on having the three angle valve job with the 30 degree back cut on the intake valves done as well as milling the head to compensate for the thicker head gasket. What else am I missing?
I has been a long time of saving my pennies to get to the machine shop so I want to make sure that I get it right.
Thanks,
Kevin