How much power lost up top if swap the open intake for a rpm air gap

Here's a test that would be relavant to many:

Dyno a street/strip big block chevy with a healthy solid roller cam, like 254/262 @.050 .660 lift, 10:1 compression with good aluminum rect port heads (350cfm@.600) with a team G open intake.

Then, swap the intake for a gasket matched RPM Air Gap dual plane, and re-dyno.

Conventional wisdom can predict the results, but how much power is really lost at peak, average, vs how much drivability is gained.

If your like me, with a job, a working wife, and 3 kids, your street/strip car ends up being more street than strip cuz you just don't have time to get to the track.  But that big thumping cam and killer top end is too good to give up.

Big cam and big open plenum equals tricky carb tuning for drivability - a wide band is essential.

The rpm air gap has proven to be great intake, but I've never seen it tested on a big solid roller like described above.

What do you think gang, can we see that in next months issue!

Thanks,
Mark.  

Johnny, Steve,

For this test, you could dig out the Ironman 468, swap the cam for one with 10deg more duration, then do the manifold tests.

Send the motor (and yourselves) to Northwest Tech (where the engine masters compitition was in Ohio), and I'll help wrench during the test.

Or, If PHR covers the cost of dyno time, and the rect port RPM Air Gap, I'll provide my motor for the test.

Deal?
Mark.