This is Trick Flows first entry into the Mopar cylinder head market. The head fits B and RB engines with 4.320 or greater bore. That includes the 383, 400, 440 and larger derivatives. The intake is ...

While the design changes were obvious and the flow numbers looked promising, the bottom line is how they stack up in power production on the dyno. We already had a fresh '71 440 Six Pack motor on the ...