Check out these two pics: http://24.1.139.249/images/122900/DCP_0110.JPG http://24.1.139.249/images/122900/DCP_0111.JPG

Hopefully you can see it. That is the black plastic intake of a Camaro, looking at it from the throttle body. At the bottom of that circle, is a huge lip sticking into the air stream. You cant grind it down because you'll cause a hole. But I wonder if you can smooth it somehow so its not sticking up into the airstream, if its worth anything. But, this particular intake came off an 88 IROC 350 that ran 10's with nitrous, so maybe it doesnt hurt anything.

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1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-

 

I've played with the idea of replacing the covoluted tube between the MAF and the TB with an appropriatedly sized piece of stainless(necked up from the MAF, and formed to fit over the TB). But I got to wondering if it would make any appreciable difference, as the air at the walls shouldn't be moving very fast to begin with. I have a minimal background with airflow(mostly related to turbine compressors), perhaps someone with meaningfull experience could confirm or correct me.

I tried to follow the links you posted(the IP is valid), but couldn't get a reply.

One thing I find of interest is that, aftermarket high-flow air cleaner lids for the LT1/LS1 assembly really do deliver gains. I have seen three dyno sheets where these lids improved output by 15 - 17 hp(17 hp on an otherwise stock LS1, 15 hp on two LT1's with exhaust upgrades). Makes me wonder if redesigning the L98/LB9 lid could be worthwhile(though it's doubtful if the gains would be nearly the same). But I guess that would take it out of the realm of "free" mods.

 

You could grind it down and with the holes you could use fiberglass, mold, shape and grind it, to cover them. But as you said will it give you any improved proformance?
I think as with the air foil the more performance parts you add to the car such as cam, heads, headers, valve size, RR and intake manifold along with porting could let this mod help more in the performance range. But alone it won't do much.

 

Well...if you were able to weld, prehaps a sheet metal plate would be more effective, and as well, have you ever thought about changing the rubber neck that goes from the throttle body to the maf? Air flow must be disrupted when it hits the walls of that regid structure, so perhaps a metal fabricated neck might add a couple HP as well.

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86 IROC-Z, Retired for winter, weird oil leak (drains out in about 3 minutes), new 355 other than that, TPI, 700R4, edelbrock headers, removed AC/Air pump, heater plate conversion - no heater (loL). 14.8@90MPH

 

Too solid and they then vibrate, and fail from vibration.

 

Kevin, Like you said, you can't really grind any material away at that point of the intake track. If you look at it as it sits installed on top of the radiator cover there is no room to really do much. It is much easyer to fillin and smooth it out from the inside. With your car being a speed density system you would be better off going to a different cold air set-up all together.

Just my .02

Steve