Very impressive numbers for his street version head, god look at the flow numbers at .650
Well in the eleventh hour before Norwalk. I did a quicky port job to one of my ports in my new 5 heads. Keep in mind that this is still my street version of my new head. I used a 2.250 valve with a .91% throat and flowed it on the same 4.200 test fixture. This is only my second attempt with my new head because I have not had the time to devote to it, and there is still allot more left. I only flowed it from .500" and up to get a few numbers because I'm tired and ready to go home. My first attempt with a 2.200 valve the port flowed 420 cfm at .950" of lift(good enough to rival my Tiger heads). This port I just finished with a 2.250 valve flows 440 cfm at the same lift. I think there is a little more left in the combustion chamber because I did little to it. I also think that this port shape wants different valve angles. Keep in mind that this is with a 45 degree seat, and most higher end heads use 50-55 degree seats. Here are the numbers from .500" up.
.650 391 AWESOME!!!
1.00 451 AWESOME AGAIN!!!
Keep in mind this is my street version of the head and the race version is still to come. Hopefully my new 5 head will raise the bar again!!!
DCI MOTORSPORTS INC.
Designer of the DCI Tiger Heads and the new DCI Ram Air 5 Heads !!!!!
The things they hide, the way they spin things, the excuses that they make and the things they omit.