I've been lurking on this issue and looked at what some people have come up with, I also look at what other car companies have done to get cooler air into their engines. having a TBI LO5 gives me an inferiority complex, however I know that with a bit of money some parts and thought that I can make a nasty LO5 and keep it emissions legal.
Issue number one getting enough cooler air into the throttle Body. I've seen some rather stranges mods that look good but still suck warm/hot air from the engine bay
[You must be registered and logged in to see this image.]I like the K&N filter but with this set up it may get a lot more air but it's still warm air.
this next set up is better, however I feel that the first K&N filter would be enough, may not look as ricer cool as this set up in the next picture but again both of these's K&N filters are still only sucking in warm engine bay air, so I'm assuming that it's only marginally better than stock.
[You must be registered and logged in to see this image.]I really like the look of the late 60's buick GS air intake, at one time I thought of buying one and addapting it to the TBI since I think it would look so cool! I've since discovered that they are rare, desireable and way out of my mod price range...
[You must be registered and logged in to see this image.]So I've looked in the engine bays of other cars at shows and such, I was impressed with the porsche 928's factory air intake....
[You must be registered and logged in to see this image.]as you can see the fan shroud has incorperated air snorkels that are sealed with the hood when it's closed. This set up suck in the cool air from under the hood just infront of the rad where the air in most cars would be the coldest and have more velocity. the air is then fed into a large flat air filter similar to the filter in the stock air intake on the TBI air box.
[You must be registered and logged in to see this image.]So I've picked up the fanshroud from a 928, I got the K&N filter that replaces the stock filter. I'm going to go with electric fans from an LT1 car and eliminate the engine driven fan, I will then using both the LT1 electric fan's fan shroud and the porsche 928's fan shroud to make a shroud that has the porsche's air intake snorkles and hood seal. I will then add a secound air intake tube on the factory air box then duct the cooler air from the porsche's air intake snorkles into the stock TBI air intake box fitted with the K&N filter.
I'm also going to install the 9C1 LO5 3" Y pipe, a 3" cat with a 3" cat back system.
this should help my LO5 Breath, don't know if it's going to cure my LO5 inferiority complex yet....