What???, I could see you saying this if he was running a comp xe274 with 9.5 compression but no way with his combo. The trickflow heads are 190 cc street heads, kinda like cnc ported edelbrocks. Thats why some guys don't see the MAGIC improvements they think they will, they either have mild engines that don't need that much head or already have some pretty decent heads and aren't gaining a ton of flow within the lift parameters of the cam/valvetrain they have.