I have a problem and don't know what else to do. I have stage II aluminum heads that continue to leak next to the tunnel ram in the front and the back.  Pulled the heads and put some expensive f'n gaskits on and siliconed everything and they continue to leak. Does anyone have any suggestions. thank you

If the heads were milled and the block decked you need to have the intake shaved. Does the intake sit on the motor without gaps?
I had an old 312 Ford Y block that I milled the crap out of the heads and had to have the intake machined due to the different width between the heads.
Just a thought.

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John Thompson

You might also want to check your inlet pressure also..

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2005 IHBA Top Eliminator DIV 1 World Champ