world windsor jr heads on my 289???

venom1997

Screwed by the Twins
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May 29, 2008
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albuquerque new mexico
guys instructions say to drill 1/4 inch holes in the block for the steam holes, the heads have a pocket on the underneath that will go over the holes drilled in the block. my question is wont it build too much pressure or how does it relieve the pressure/steam im confused:shrug:

I know this is the wrong section but im stuck thanks
 

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