A base gasket can't actually compensate for the head gasket. They are the wrong thickness.

To optimise the setup properly, the base of barrel will need maching, the head relieving, or as you say, VHM style heads with the correct inserts. The shape of the inserts though, as well as the compression ratio, can make a huge difference on the dynamics of the motor.

Nothing is ever that simple.
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Andy.
NSR-WORLD.COM

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