Originally Posted by mgoblue9798
Originally Posted by Doc Fiberglass
I say NAY to the blocked crossover WITH the 413 heads.

And YEA to water injection up
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Why would you not block the heat crossover? Cooler intake charge is more detonation resistant right?


My take ?...on the 413 industrial head WITH COOLANT HEAT ....leave it open. It’s not nearly the huge heat of the exhaust crossover

SORRY .. but water injection works ... I used it on a duallie tow rig with windshield washer fluid - it worked