[68c10owner]

Originally Posted by Blue Rat

Yes they will flow more but I always go by the .400 valve lift figures.

http://www.brodix.com/heads/big-bloc...block-series26

low lift figures are good, they show how well the head will perform but you still need to know what the max flow is and where. None of this is really important at the moment as the OP hasent gotten to this point.