Which one should I go for? Not to sure if a 52mm is worth it on a stock motor.

I only have a borla cat back, and LTs and a CAI will be on the way

 

i had the foil on my 48mm it seemed OK, didnt notice much SOTP feel. I just went to a 52mm and i have LT headers with a ram air hood. i was told it would be more effective to have the 52mm withthe ram air and LT headers..

 

You could always do both. I have a holley Airfoil for sale for $25 shipped if your interested (new is like $60). It will work on a 58mm too.

 

I thought the aftermarket TBs have built in air foils already

 

With your mods so far honestly I wouldn't even bother with either. I'd personally spend the money on something that would make more of a difference. The stock TB's are good to about 450hp or so.

 

I have a little $ to spend. Maybe I should do 4.10s

 

I would, definetly would notice a difference stepping up to some 4.10's.

 

Most TB do have a built in foil so if your planing on doing one down the road dont waste the time or cash on a foil

 

**** man i just did a quick search and found this.

"The September, 2002 edition of GM HIGH–TECH
PERFORMANCE magazine reported a 5.8 horsepower increase after installing this
Holley airfoil kit on a stock 1994 Camaro Z28 LT1, called “The Grape Of Wrath”. "

from exotic performance parts plus not sure if i can post the link but i just searched "throttle body airfoil" and a link within the first three said 93-97 f-body. for 50 bucks 5.8 rwhp is a damn good deal to me. when else do you get horse power for cheaper than $10/1HP.

 

^^^Could be a fluke though. Dynos don't read exactly the same every time.

 

yea thats a legit statement but i mean a magazine that is known for chevy performance dyno'd it so i'd say it holds a tad more validity (doesn't mean its 100% the truth just a greater chance)

 

I would agree with StealthFormula. For your mods right now, I'd spend the $ on other mods. Yes, like gears, and/or a stall(if an auto).

 

Yeah, that's also true. And when you can get them for around $30, I guess it'd be worth a shot.

 

my car gained 10 horsepower to the spare tire after installing TB airfoil.

 

I have dynoed cars including mine in the past with the T/B Airfoil and saw 0 gains to a max of 2hp, and that doesnt mean that is actually gained 2, You can make runs on a dyno and have X amount of % difference...Of course there was one guy said that he gained 30 RWHP with an airfoil !!!

 

dude no way!? seriously thou i gained about 11.12395 gwhp(garage wheel horse power) cause thats where my spare tire is sitting. i'm gunna need to install it for an upcoming race against our local lawn mower.

 

 

Now with forced induction you can actually gain a pound or two of extra boost, at least this was a warning from procharger...

 

I actually seen that in the procharger booklet the other day, and I thought that was kinda of odd??

Well again if anyone is interested I have mine for sale (pics in the for sale section)

 

I was going to pick up a 52mm TB, since the stock TB is 48mm and the intake is 52mm. I decided to wait and save my money, eventually down the road when I get LE2 heads and probably the GM847 I will get the intake ported to 58mm and pick up a 58mm TB. Until then I dont think I need it not feeding bigger heads or cam yet.

Too bad you live on the other end of the state or we could be LT1 buddies...lol