Highest flowing sbm heads?

B3422w5 said

W2’s are good heads but aren’t “ gonna run 9’s with heavy *** street cars” unless there is a whole lot going on.
I had W5’s on a “ Heavy *** street car”..3350 pounds and it had a LOT going on to run 9.80’s at the time. And those heads were better than W2’s.
And no, car doesn’t have to be 2200 pounds to run 9’s with the non offset heads.
Guy I mentioned earlier is 2920 at the line and has been 6.08 at 112. That is mid 9’s, and it isn’t 2200.
guy with the Drsg week car has been 132 Mph at 3175, lot of guys have dipped into the 9’s at that mph. And his car doesn’t 60 yet.
Pittsburgh racer runs 9’s easy with Eddie heads. So your statements aren’t backed up at all by facts.
Go find me heavy *** street cars running 9’s with W2’s, I don’t know of many/ any. It certainly wouldn’t be common

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I hear what you are saying but W2’s can be and are a great head. I got my set of Econo heads from a friend for dirt cheap prices and fell into not one but two sets of Crane and Mopar Performance rockers. I knew nothing about them when I got them but I hit the books and internet searches. As luck would have it I had the set that were prone to cracking. If I knew then what I know now I would have backed off the torque readings on the lower row of bolts slightly. At the time I had my very first flowbench and it measured in 10 inches depression so I couldn’t lean on it like I can now. So I did a little port work to them and ported a Victor W2 heads. On a mild built 408 with a .520 lift racer brown cam on BP93 pump gas the car ran low 9.80’s. But my duster was also slightly lighter then with fiberglass doors. Heads heavier doors much lighter. I would probably never travel that road again with all the heads I have here but with the race version of the W2 nicely ported with a W2 Tunnelram would be a very nice package in the right hands. Ohhhh mine had 2.02 (3/8 valve stems) intakes in them.