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Larry, More discussions, .. I have a 2" valve, .. data from my portflow software. .200" lift, 132.6 cfm @ 28" , est valve area 1.257, 105 cfm per sq in., flow area sq in. .910, flow coef. .724 .300" lift, 201.1 cfm, est valve area sq in. 1885, 106.67 cfm per sq in., flow area sq in. 1.380...

Larry, Thanks, .. you ARE the MAN! Another question, .. perhaps for another thread, .. I'm thinking about building a F/ED dragester with a Mopar W9 rp cylinder head on a Mopar aluminum 4 cylinder block, .. do you have any experience with these combos? Curtis Curtis Boggs Racing Flow...

Larry, Thanks, .. yes I'm going to try a 30, 35 & 37, .. see what happens. Thanks again, Curtis Curtis Boggs Racing Flow Development http://www.raceflowdevelopment.com

seat angle? any experience with a 30º or 35º seat angle, .. do they live, .. how long etc. ???? Curtis Curtis Boggs Racing Flow Development http://www.raceflowdevelopment.com

Larry, Did some flow tests at higher pressures, .. didn't find anything significant. My exhaust port does flow better at low lifts though. The only thing I haven't done is wet flow tests, .. .. so I'm guessing that my valve job VS the other valve job has better wet flow. Since you've seen...

Larry. The BSFC for the fast head was .540 at 4500 to .630 at 6750 in the mid rpm range 5200 was .540 6250 .610 The "slower" head was .52 at 4500, .. .63 at 6750, mid rpm range, 5200 .53 6250 .60 a/f is 12.80:1, . . . . CDS wide band, bosch lsm11 sensor. Curtis Curtis Boggs Racing Flow...

I didn't mean to hi-jack Rick's thread here, .. Rick are you OK with this? Larry, Thanks for the time you take to discuss this, .. The FASTER head had 2-3 higher BSFC on the dyno at 1280 a/f. I think the dyno headers are the same as what we used in the car, .. I know port volume on the...

There was two tests on two different dynos on the same heads & shortblock. One a Studska the other a Superflow. Both results the same. The torque & HP curves are the same, .. .. but one is faster on the track?? The only difference was the faster cylinder head had 2-3 points more BSFC at the...

Is there a way to measure, or get an indication of an engine's acceleration rate on the Superflow 901 with the basic console?? Tested an engine that was a second a lap faster on a road course, but showed no difference on the dyno??? Curtis Curtis Boggs Racing Flow Development...

Larry, A few questions, .. the curtain area at .300" how much will that flow? what's the best possable? also, .. I'm very bad at math, .. is there a spread sheet available to do the calc's, .. curtian area, .. etc.? About the "sonic choke" these Velocities you referr to, .. how does that...

Larry, I have a simular problem, .. and have several questions for you, .. but I'll start with a description of my project. Round port, 3" long, 1.24" round at gasket tapering to 1.34" at the short turn or entry into the valve bowl. The valve bowl is 1.40", throat under valve is 1.290" and...