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ddgonzal
Re: What head is this?
#21
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The ports are smaller, flow less air. And you lose about 1% because they are a non-quench head.
* H89: 82 hp stock @ 6000 rpm
* H62: 75 hp stock @ 6000 rpm

The H62 (1974 A13 head) will presumably make more torque at low RPMs (say 2000-3000 rpm). So for an A12 may be better for in-town driving than A14 head, yet with more pep on the highway than a standard A12 head.

Posted on: 2015/12/3 2:12
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