Theoretical ? - High butterfly throttle bodies

[KevinG]

I can somewhat understand the benefit of slide valve over butterfly for throttle bodies, but I am really curious over the benefits of positioning the throttle bodies up high as on the early RSR motors vs. the bottom positioning for the rest of the porsche motors.

I am assuming that Porsche did this to the RSR's for a reason, and that there is a benefit - so:

What is the rationale behind this setup?

Does it only apply to the RSR type motor for some reason?

If it doesn't just work with the RSR type motor, why didn't they use it for the rest of the cars?

I'm talking about the positioning, not slide vs butterfly unless the high positioning only works with slide throttles. If that's the case then:

Never mind.

[TimT]

With the radical cams the RSR used some of the intake charge would reverse, and be above the intakes...

The intakes were made longer to keep the intake charge within the manifold etc....

something to this effect

[Wayne 962]

Right - to counter the fuel reversion from the hot cams...

-Wayne