The block-off gaskets won't last very long. I cut some block-offs from stainless steel pancake turners and they burned through over one summer. It would be best to fill the joined center intake passage in each head with molten aluminum so you would get no exhaust reversion between cylinders. If you have enough old pistons to melt, you can fill the intake too.
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Bill
64 GTO, tube chassis w/606" IA tall deck, PG & a pro geared Fab 9". 2750 lbs.
[email protected]/4, [email protected]/8, 1.1981-60-ft. 8/10/08
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