HI92Z28

And thanks 88 WS6 TransAm GTA for backing me up. SOME PEOPLE. :hail:

GofasterFirebird

iTrader: (3)

88, I believe you will find that as the HP of an engine increases so does its' efficiency with air. Opposite of your statement. Thanks

Bort62

That has nothing to do with anything. I don't care if its a BBC, SBC, Turboed 1.6L or a 426 Hemi.

They still move the same amount of air to produce 500 hp.

Youre Comparing Apples to Oranges. Would Guido put a 48mm Tb on his car ?

No, he is also running a 400" SBC Under boost, and planning to run well below mid 12's.

I guess following that logic, We should also all go out and get Hogan Sheetmetal manifolds, Mufflex 4" Exhuast, and 4500 Coan Stall Converters, cause thats what the "Fast" Guys run.




This guy did't want an answer to his question, he wanted justification. Several people who actually have experiance and know what they are talking about gave him an answer, and he didn't want to hear any of it.

If your not willing to listen to the advice of numerous people who have been there, done that, Then why do you ask in the first place ?

Like I said before, he should just go out and buy his TB. Its obvious he knows Better than all the rest of us. Must have been Born with a silver wrench in his mouth or something...

Biochem

That's exactly my take on this whole "question" too... He doesn't want to know if he should or shouldn't, but which one to pick. That's pretty obvious. Just be sure not to come here asking why your engine is a dog after spending $300 on a new TB. You REALLY don't need it yet...

HI92Z28

Some of you guys don't get it. ALL I ASK IS WHICH TB SIZE, INSTALLATION, AND WILL I LOSE PERFORMANCE, THATS ALL!!!!!! I DON'T NEED TO BE TOLD "DON'T" WASTE YOU MONEY GET SOMETHING ELSE. Simple as that! COOL?

Guido

Don't waste your money.

Get something else.

I put a 58mm TB on my car about 3 summers ago. I was running 13.20 with a set of AFR190's, TPIS base, SLP runners. I was having some obvious problems at the time and I thought that a TB would solve the problems. I put the 58mm TB on and it didnt go any faster.

Swapmaster

Just my 2 cents worth. The openings into the plenum are only
48mm. If you don't open them up? Guess what? Your 58mm TB
is only flowing through 48mm holes.

But that don't matter. It would take a heavily modified engine to
draw more air than the 48mm TB will flow.

HI92Z28

The best logic is to think of your engine as a big air pump. What this means is that the more air and fuel you can put into your cylinders for combustion, the more horsepower you will make. However, this only holds true if the other items such as the intake manifold, exhaust, and camshaft specs are also up to the challenge. While the factory normally under-sizes the factory Throttle Body slightly to maximize low-end throttle response, a one step upgrade in size will normally net a 6-10 horsepower increase while increasing tip-in throttle performance by improving velocity

Bort62

Well If they say its true!


Ive got an Entire SLP catalog full of crap like that, I swear if I installed every SLP part for my car I would be making over 700 HP at the rear wheels.

Oh yeah, and the Tornado gives you better Gas milage, Too. But only if you align the fuel molecues.

And Somewhere in my notes I have the blueprint for a Carburetor that will give you 100 mpg.

tizzdizz

AMEN to that brotha! If you're looking for advice, you're in the right place. But just because it looks neat, sounds cool, and is easy to put in doesn't mean its the best idea. Heck, if you want something that sounds cool, get a gear drive setup.

If you have $300 you can probably find a good set of headers and make a heck of a lot more HP than with a 52mm TB.

If you wanted to upgrade the bass on your stereo, would you buy a sub without buying an amp?

Bort62

Well of course, Cause we all know the Stock head unit puts out More than enough power to push a pair of 10" L7's


Geez.

HI92Z28

$300? That cheap? My friend have a set of used BBK headers that he wanted to sell me also.

Bort62

HI92,

Asumming your willing to listen...

For the 300$ You would have spent on that TB, there are Numerous Mods that you can Do that will make Much more differance.

1.) Gears. I don't know if your car is G92 spec or not, but if not upgrading to a 3.42 w/ SLP Torsen Diff Will give you a Nice sock in the pants

2.) Like Tizz said, headers. For 300$ You could find a set of used edlecraps. I know of a set for sale for 200 right now, as a matter of fact. They arent the best headers, but if your on that sorta budget and want that sorta instant gratification, They are a helluva lot better than Stock manifolds. (or a Shiny waste of money Throttle Body)

3.) Runners. Take your pick, Id go with the SLP Fully Siamesed myself. Combine that with a hour or so Of vigorous porting of your stock Plenum and you will definately feel the gains. Take it a step further and Start to Siamese the Stock base.

4.) Hands down the best and Most useful Use for that 300$, A pocket Programmer, Tuner Cat, a few EPROMS, and a Nice chair to sit your *** down infront of the DIY-PROM board with. No One other use of this money Will get you More gratification, sucess, and real world performance figures than this.

There are many more, but there are 4 alternatives to a TB wich will ALL give you much more satisfaction and Actual improvement, for bout the same amount of money. Just like the Diamond Guy, I garuntee it.

HI92Z28

Thanks Bort62

I will look at these mods inconcideration for the future.

The BBK 52mm is used from a friend that will sell it to me for $150 and the 58mm is from another friend that bought it new from Summit. I will eventually purchase the 52mm and will post track times or go to a Dyno and compare the two for you guys.

HI92Z28

How do you get a pic on you sig? How many posts do you need to get a Avatar?

Ed Maher

Pics are now outlawed in sigs afaik, the only people who still have them are from before they were trurned off in software.
You can set you avatar in the control panel, no post count needed, just click on the user cp button, then profile or options.

Jarod

Yea and I've seen people "claim" that a lightweight oil drain plug will reduce your ET's too, lol. I think your friends are in the same dreamworld as you are. First of all, LS1's are totally different than your L98. I mean we're talking a difference of about 100 hp, not to mention a completely different TB and intake. And second, I put a ported TB on my LS1 with a cam, headers, intake, etc. and I gained absolutely nothing at the track. So there's no way in hell your friend's with stock LS1's are going to make any more power with a ported TB. And if they won't help a stock 320hp LS1, what makes you think it's going to help your weezin 200hp L98?

If you really think the "cool sound" of a bigger TB is worth that much money to you then by all means go ahead and get it. At least you'll sound faster. lol

AlexJH

Hang on, I thought the velocity of the air going through the TB was why GM got that much HP out of the RamJet 502, with a 48mm TB.

gtaguy87

You all seem to know a lot more than me about mods for TPI than I do so I got a few questions

gtaguy87

I need some suggestions on a next modification for my GTA. I already have SLP cold air induction, K&N air filter air foil, SLP runners, SLP exhaust, computer chip, and 3.73 gears. Im wondering what i should do next Im thinking about a cam and gear drive, my friends say cams make a huge differences, if you know of a good cam let me know. I was also debating on headers, which is the best way to go right now. Im losing my races once i hit 3rd gear they catch up. Any suggestions let me know. Any info is appreciated.

MdFormula350

finish your exhaust with slp headers..

gtaguy87

do you think i should spend the 650 on the ceramic coated ones

RMK

Get them coated with jet hot. From what I've been told it's far better than the stuff SLP uses.

Also, this is going off topic. You would get far more results by starting a new thread specific to your needs.


Robert

Jza

Okay..

Get the 52.

It's easy to install.

And you'll lose performance.

Ed Maher

In case noone noticed, this post is 7 months old and has been answered and beat to death as is. It doesn't need a rebirth asking a seperate question.

The only fix is a lock. If you need to re-ask something in here that you felt was incomplete, go ahead and repost.