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SBC head with dual heat crossover ports.

General engine tech -- Drag Racing to Circle Track

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rfoll
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SBC head with dual heat crossover ports.

Post by rfoll » Tue Dec 03, 2019 2:43 pm

I am planning to use a set of heads that have the heat crossover in both center exhaust ports. I have heard they are crack pron, and recently have seen it on a pair of low mile heads. Is there an advantage to blocking one port of each pair of restricting both ports by some means? I have this thought of inserting a small tube in each port and pouring zinc or aluminum around it, or just pouring one of them shut. I do need carb het for wintertime driving. It was 19 degrees Saturday morning..
So much to do, so little time...

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