Jeff----
The "074" heads are open chambered and you can use them on your engine with the parts that you described. These heads were used on 1971 LS-6 engines. I don't like them, though. The port volume is too large and will sacrifice street driveability.
The "074" heads are open chambered and you can use them on your engine with the parts that you described. These heads were used on 1971 LS-6 engines. I don't like them, though. The port volume is too large and will sacrifice street driveability.
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