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Old 03-13-2012, 05:45 PM
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Originally Posted by davidmij
Hey Dave, In my blog for "390 heads and intake question" you said that I could block the crossover in my intake manifold. Can you tell me how you would do that? I read online that some guys use epoxy, others talked about using sheet metal.
If I do that do I still need a valley tray and manifold shield?
thx in advance, Dave J
I use shim stock, which is thin sheet metal. You can block both sides or just one side. I would do both sides (just to make sure).

Simply slide a sheet metal cover over the intake manifold port where the exhaust gas enters on both sides. Then, no manifold shield is necessary.
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