The core of the problem with iron small-block Chevy heads is that there aren't any (cores, that is). It is becoming more and more difficult for the professional engine builder or weekend mechanic to ...
Trick Flow designed the Twisted Wedge head with a 13-degree intake-valve angle along with the standard 23-degree exhaust-valve angle. Despite the intake-valve angle change, the head is a 100-percent ...
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