Hi Gang,
I just finished reading "Street Rotary" on recommendation of a thread found while researching my performance project.
In a latter part of the book, the author recommends "porting and polishing" the throttle body (among lots and lots of other ideas/suggestions), however he never explains what, exactly, is ported. The polishing part I can kinda figger out on my own, but I'd appreciate any clarification on the porting that anyone here can provide.

thanks!

- kel -

 

The front where air is actually entering. You can widen that up and give it more breathing room.

You leave the butterflies alone.

 

That makes sense. Thanks!

- k -