That's why I don't understand why all these head mfg's insist on plugging in the same stone age combustion chamber into a Mopar head.
When the SBC Vortec head came out, Hot Rod did a back to back comparison between a conventional SB head and the new Vortec. IIRC they both flowed similar numbers but the V head had a smaller combustion chamber so compression was up about a 1/2 point.
On the same nothing fancy short block the V head was 70 HP better peak and did it with less than 30 deg of timing. IF you can believe HR Mag.
Trick Flow seems to have figured out it doesn't cost any more to make the right combustion chamber pattern than the wrong one. If this chamber shape works as well as the Vortec one apparently does, they will sell boat loads of them.
