TF & Speedmaster Flow Tests

Earlie A said

That flow curve is better than mine, but still weaker in the middle than it could be. Any idea what the port volume and throat size are?

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The intake throat size on even a bare Speedmaster head is on the large size. To large no, but a hair larger than they should be. These heads and Edelbrock or ProMax. Heads shine with a 2.055 valve but again that after being ported.