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b30 head differences? 140-160

uid 37336's pic
posted by  B20Paul. on  Wed Nov 19 02:36 CST 2008
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last visit: Mon Oct 20 10:54 CST 2014
[RELATED]

The B30E inlet ports I have seen are in between B20B & B20E size & are a better shape & flow better too. No need to port the inlet at all if you are staying with a long life street cam with lobe lift in the .280" range.

The exhaust port, OTOH, is terrible. The inlet exceeds 100cfm@10"H2O easily while the exhaust struggles to get much past 50cfm IIRC. '74 B30E head looks exactly the same as a '71 B30E head to me.





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