lt1noob

iTrader: (4)

im modding my car in order, working from the cold air intake, elbow, throttle body, intake, ect. so next on the list in the tb, what will i see for gains for upgrading to a 52mm or 58mm tb? and would a 58 give me alot more than a 52? the reason is im a big fan of lingenfelter but they only a 52mm, and im a noob so for airflow im basically going off the "Bigger is better" reasoning. ( i know this is not always true but it makes sense in this case ) so lets see what you guys have to say. if 58mm is better i will probably be going with a holley.

lt1noob

iTrader: (4)

would i also need a ported 58mm manifold too? ill be upgrading to that soon after hopefully, my guess would be i do and id need to do both at once?

noriceinside

iTrader: (6)

yeah you need to port your intake to make a 58 mm work. stick with a 52 its plenty big for even H/C engines.

at this point i'd skip the throttle body and get some headers. you really only need an intake, headers, ORY, and catback (as far as gains, elbows are arguable). until you do something to the engine you can get away with the stock throttle body. if you really wanna do something just spend $20 and get a little airfoil off ebay.

once you get into the H/C then you can do a bigger TB.

96tealTA

iTrader: (2)

Your stock TB is good for over 400HP. If your making over that amount, get the 52mm. Don't put a 58mm on an otherwise stock LT1. You'll probalby loose a little power with the 58mm, and the car won't run right. The only time you should run a 58mm or larger TB is if the car is using forced induction, or a large dose of NO2. I'm running 13.3-13.5 with the mods in my sig, on a stock TB. Just my $.02. Good Luck!

nemanracing

Spend money else where, unless you get a good deal on it like i did

firehawk238

iTrader: (1)

if you are going to upgrade your TB, do not go above a 52mm. the 58mm will kill your low end torque. stick to the 52mm, it will help you with throttle response. you will need to port your intake or buy an already ported intake at the time of the install. good luck with it.

karl

lt1noob

iTrader: (4)

yea dont worry im doing mac mids and y for my fall or winter project, got that under control. and the thing is, there was ported intake on ebay for little over 200$ shipped the other day and ill probably get that and the tb out of the way this summer. and the car will be a heads, cam, full bolt on car in the future im just getting the little bolt on mods out of the way for now

lt1noob

iTrader: (4)

so 52mm is the way to go, glad i know this now or i probably would have bought the 58mm.

noriceinside

iTrader: (6)

hooray for ls1tech!!!!!

lt1noob

iTrader: (4)

agreed

96tealTA

iTrader: (2)

Good choice! I'm gonna be getting the LE2 head & cam package from Llyod Elliot, and a 52mm TB is what he recommends.

noriceinside

iTrader: (6)

i really wanna look more into that. i was in the market for another LS1 for around 8-10k but now im starting to like the idea of getting an LT1 and doing the LE2 package with some boltons and still only spending 8-10k.

96tealTA

iTrader: (2)

DO IT!!! A friend of mine has a 94 Z28 with the LE2 set-up. It's a great H/C package. There's power everywhere, and it sounds great too.

BizZzatch350

iTrader: (33)

I did the AS&M 54mm on my TA, looks awesome, sounds cool, havent gotten a chance to really drive it yet though

noriceinside

iTrader: (6)

dude just go all out...MONOBLADE!!!!!!!!!!!!!

HoLLo

iTrader: (17)

Do those things really help?

And I have a BBK throttle body on my car that someone installed before I owned it. BBK says theres no way to actually identify if its a 52 or 58 without just measuring it. Anyone know another way to identify if its a 52 or 58?

Ponch95

iTrader: (5)

Damn Bolter the guy doesn't know thats why he came here to ask, no need to flame the newbie

Spiers

iTrader: (7)

For real, we're all here to learn, no need to be so harsh.

And FYI, a 52mm TB will not require porting the intake manifold, but a 58mm will. The stock intake ports are 52mm.

lt1noob

iTrader: (4)

and that is exactly why i asked. we all start somewhere and i really didnt do any research on throttle bodys and this is always the first place i ask questions.

lt1noob

iTrader: (4)

i thought the stock were 48mm?