SCJ valve angles.

I am putting a set of SCJ heads together (2.25 Int/1.76 Exh) and was wondering about the angles 35 deg. or 40 ? Put a 32 deg. backcut? What is the current thinking?

Thanks,

Michael.

I'm assuming you are talking about the angles on the valve job. The heads should have an appropriate valve job on them from Ford. I believe the top angle is 35*, the seat angle is 45* and under that there should be a 60* angle, then a 75* angle, to the throat which is 90*. As far as the valves themselves, for some reason they do not have a backcut from Ford. By all means put a backcut on the intakes. It should be 30* and about .075" to .080" wide. The width is critical. Don't worry about putting a backcut on the exhausts. You can open the i.d. of the exhaust throat up some and it will help the flow on them.

Hope this helps,
Charlie Evans

Thank you Mr Evans. It does help.

Michael.