4.1 Liter Production Head vs. Turbo Trans Am Head

4.1 Cylinder Head (25518445)	TTA Cylinder Head
Features of Note: Notice the round combustion chamber with the quench area by the valves (top of the combustion chamber in this photo) Notice the tuliped valves Notice the bridged water ports at the ends Notice the placement of the spark plug relative to the valves	Features of Note: Notice the oval combustion chamber with no real quench area Notice the much smaller combustion chamber volume Notice that the deck surface will be part of the combustion chamber when sealed Notice the tuliped valves Notice the bridged water ports at the ends Notice the placement of the spark plug relative to the valves If you look very closely at the right side of the picture (bottom corner), the exhaust casting is shorter than the Buick head.

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