Valve Clearance on Larger Camshaft and Flat Top Pistons
Thanks. That's a helpful comparison. Do you have either the cam model so I can look it up or the cam card so I can get an idea of when the intake valve closed?
You are going down a bad road.
With the head gasket and the valves lashed, the intake valve needs whatever your piston to HEAD clearance is plus .010-.015. Any more than that and you are hurting power. That's a FACT.
For example, let’s say you have .050 piston to head clearance with the gasket. That means all the clearance you need at the most is .065.
If you were using a quality gear drive you could get that all the way down to whatever your piston to head clearance is. But I doubt you are using a GD.
For the exhaust you need, including lash and the gasket is 1.6-2.0 time your intake clearance.
So…that means if you are the nervous type and you have .065 intake valve clearance you’ll need .104-130 and I run less than the 1.6 and never bent a valve.
In fact, my engine right now has the exhaust valve just touching the carbon on the piston. This is a street/strip car so I’m going to take a .010 cut off the face of each valve.
As TT says above, with those valve pockets you’ll have way too much clearance.