Intake Runner Length

[Clive Apps Techno-Logicals 416 510 0020]

> 
> 
> >   The D port is from what "chev" has done with the exhaust port,
> >probably some else did it first, it's just they are so common......
> >Bruce
> 
> IIRC, the exhaust ports on the Ford 427 FE "cammer" were the first to be D
> shaped---with the flat on the short side of the curve. In other words,
> round, except for where the flow would separate anywayz. Believe it was
> claimed to help keep velocity up, and more importantly, turbulence down.


actually what it does is slow the flow at the bottom of the port
more than the flow at the top
this helps the gases turn the corner

Clive 
> 
> Regards, Greg
> 
> >> Thanks for all the inputs.....Tim.
> >>
> 
>