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In the cylinder heads.
The intake valves are bigger, and lead to the carburetor. the exhaust valves are smaller and lead to the manifolds or headers.
The exhast valves are larger.
The exhaust valves are smaller and lead to the exhaust manifold.
exhaust
When #1 piston is at its upper most position in the cylinder bore and both intake and exhaust valves are closed
The intakes are always bigger than the exhausts.
1973 350 Corvette. 76cc chambers. 2.02`` intake valves 1.6`` exhaust valves.
That's an easy one. Take the rocker box's, (valve covers) off. The valves that line up with the intake runners, are intakes, and the ones that line up with the exhaust, are exhaust. If the heads are off, always the larger valve, is intake.
From the front of the head it's EIIEEIIE. This is the same on both sides - (I=Intake, E=Exhaust) With the valve covers off the rocker that aligns with the exhaust port is the exhaust the other will align with the intake manifold runner this would be your intake
Front to rear, either side, E,I,I,E,E,I,I,E.
You need to get a Casting # book and look up which heads you have.