I've been watching this thread about porting the OE intake:

Porting the OE Intake Thread

Not wanting to hijack that thread, I'll put this info here in a new thread.

I have a FAST intake that I'm getting ready to install next week(I hope, if my wife doesn't make me travel to visit relatives ).

I was looking at that OE intake thread and it got me wondering if there would be any advantage to porting the FAST before I install it.

Here's a picture of the FAST intake.



You can see the gray upper piece and the black inner and lower pieces. The black parts are connected together at the factory, but the gray upper part can be taken off.




This is the rear end of the FAST, the part that requires a hole to be cut in the firewall for clearance.




LPE makes a kit to cover the hole. This is a picture that came from an old thread about the FAST installation. You can see the piece from the LPE kit has been pop-riveted in place and sealed with some auto goo.




Here's a picture of the upper piece separated from the inner/lower pieces. Apparently the only difference between this 90mm TB intake and the one for 78mm TBs (the LS1 engine?) is this upper part.




Here's a picture of the inside of the intake. It's really smooth and there just doesn't seem to be much of anything in there to clean up. The runners are smooth with no real obstructions or sharp angular areas.




Here's a picture of the only thing I'm actually going smooth out. You can see a very small little casting line that I plan to sand down.




Here are the ports where they match up to the engine. There is a little angular area sticking out down inside, but I don't think I'm gonna mess with that. You can see some "witness marks". The installation instructions say: "The intake manifold runners can be opened up and head matched by removing material near the port. There are witness marks molded in for wall thickness reference. As long as the witness mark barely remains the wall is thick enough to retain seal".

So, there doesn't appear to be much "porting" to be done. I will smooth down those little casting lines, and I'll try to "head match" the ports in the intake to the engine.

Bob

 

thanks for the pictures.

 

 

I have spoken with Tony Mamo (Air Flow Research), in reference to porting the FAST intake, he's done a few...check the threads on LS1Tech.

 

It would be nice to see more reports like this, good job!

 

Thanks for the pics.
Now, if they would just drop the price a few hundred.....