2020

iTrader: (4)

))Hey guys do anyone if Nick Williams make a T/B smaller then a 90mm that would fit on Fast78 intake said like a 80mm or even a 78mm

SS1875

iTrader: (34)

Send him a PM and ask him.

TLewis4095

iTrader: (10)

Our CNC ported 78mm OEM is $129 exchange....

2020

iTrader: (4)

))whats the CFM on your 78mm

TLewis4095

iTrader: (10)

870 CFM @16" of vac.

It won't flow that much better, but the key is the velocity, or volumetric efficiency the shows on a wet-flow bench is where it shines. The pattern evens out the flow on all sides (slows down the straight shot & speeds up the sloped side with a slight blend) for a nice even flow out the intake side.

quikrnmost

I thought you made it clear in your other thread that it's NOT in fact 78mm, but 75mm like stock? Or did you change your mind?

TLewis4095

iTrader: (10)

Even GM refers to it as a 78mm, and yes, the blade on the stock ones is actually 75mm.....I don't understand your point, it is the STOCK OEM tb whether you call it a 75 or a 78. Until it was brought up in that post I had never in 11 years heard of it refered to as a 75mm. So are you just out to stir up trouble? Or actually looking for power. You can fight all you want on the slam sites, LS1Tech is for sharing solid information & helping each other.

quikrnmost

Just want the facts. It seems like a professional in the industry that produces throttle bodies no less should know the size of it and advertise it that way. It's no different than calling a 90mm throttle body a 92mm throttle body, it's just not accurate.

It makes people think it's the same size as a Fast 78mm TB or opened up to work well with the 78mm fast, which is simply not the case.

Where is it posted as a 78mm by GM? I don't think the opening or exit measures 78mm.

quikrnmost

Calling your TB a 78mm is sharing solid information? Or more like marketing hype?

Jeff@TotalPerformanceEng

iTrader: (6)

Hmmmmmmm,I wonder what your agenda is....

Its quite obvious..

Trolls like you, are the EXACT reason I put in for my cancellation of being a vendor to LS1 tech..

2000PewterZ28

The agenda is that it is a 75mm not a 78mm. The stock tb can't be opened up to 78mm. It will break a hole thru the casting.

Jeff@TotalPerformanceEng

iTrader: (6)

I'm not arguring your point. What i'm saying is, is this idiot spend 3 or 4 posts doing his best to make Tracy look like he is being dishonest. When in reality there may be a simple mistake.

Read the guys posts, you'll kind see what I'm getting at.

quikrnmost

He is being dishonest in my opinion.

He made a simple mistake the first time he posted it and was corrected. He said "his mistake" in response, so yeah I agree the first time COULD have been a simple mistake. But like someone else pointed out, if you spend "countless" hours of testing the new throttle body design, then maybe you should know that it's 75mm.

Now when you keep advertising it as a 78mm, at that point you are blatently mis-representing your product and doing a dis-service to all ls1 techies.

blwn_00gt

iTrader: (17)

nick williams only makes 90 and 92 mm throttle bodys..

TLewis4095

iTrader: (10)

The only purpose for your being seems to cause trouble. With only 12 posts....many to stir up crap your agenda is clear. As I have posted before in EVERY thread, these are the STOCK OEM tb's and if you do a search, are always referred to as 78mm, even with the blade actually being 75mm. I did not begin the label as 78mm.....that was doen 11 years ago & when I try to refer to them as 75mm know one knows what we are talking about so as they have always been called 78mm, that is what I and every TB porter on the boards refers to them.

Get a life & quit causing trouble.

http://search.aol.com/aol/search?que...onType=msie70a

And in Vette magazine:

With the carbureted intake testing out of the way, it was time for us to convert the LS2 back to EFI. The first EFI intake to be tested was an old-style LS1 manifold. While no self-respecting LS2 owner would perform such a downgrade, we wanted to see just how much better the LS2 was thanits predecessor. Would the larger 90mm throttle opening pay dividends against the 78mm version used on the older manifold? As it turned out, the LS1 intake wasn't that far off. As expected, it made less peak power than the LS2 (476 hp versus 485 hp), but the power curves were virtuallyidentical from 3,000 rpm to 5,500 rpm. From 5,500 rpm to 6,500 rpm, the LS2 intake offered as much as 10 additional horsepower, but the LS1 unit actually produced an additional 2 lb-ft of peak torque (471 versus 469 lb-ft).



Equipped with the dual-plane Edelbrock Performer RPM LS1, the GMPP LS2 crate motor produced 473 hp and 473 lb-ft of torque.
After running the LS1 intake, we were curious to see how a factory LS6 manifold would perform. As in the previous test, the manifold was equipped with a 78mm throttle body. Despite the 12mm handicap in throttle opening, the LS6 intake easily outperformed the larger LS2 unit, producing peak numbers of 489 hp and 481 lb-ft of torque. The LS6offered serious power gains from 4,500 rpm to 5,700 rpm but offered smaller gains as low as 3,800 rpm. We suspect that the smaller throttle opening was responsible for the drop in power past 6,000 rpm, but even out to 6,500 rpm, the LS6 outperformed the LS2 by at least a few horses.

Once we were finished with the factory offerings (we didn't bother to run the truck manifold, which will produce less peak power than the LS1 but more low-speed torque), we moved on to the aftermarket. Since FAST offers its Wilson-designed LSX manifold with two different throttle-opening sizes, we decided to follow up last month's test of a 90mm version by evaluating the 78mm version for this issue.



Switching to a single-plane Victor Jr. improved peak power over the Performer RPM, but low-speed torque was down considerably. It's worth noting that, overall, the stock LS2 manifold outperformed both carbed intakes in our test.
As with the previous manifolds, the air/fuel was dialed in to 13.0:1 and the timing kept constant at 28 degrees (more did not help). Equipped with the 78mm FAST intake, the LS2 peaked at 499 hp and 487 lb-ft of torque, just missing the 501 hp and 487 lb-ft produced in our last test by the larger 90mm version. The 78mm unit actually produced better power up to 3,700 rpm, but the two manifolds performed nearly identically from there on up. Compared with the factory LS2 intake, both of the LSX manifolds offered as much as 22 hp and 22 lb-ft, and they bettered the power output from 3,000 rpm all the way through 6,500 rpm. We suspect these power gains would only improve with the addition of a larger cam and CNC-ported heads.

TLewis4095

iTrader: (10)

And more:

Page 7] - atomization and activates at wide open throttle using our patented throttle position ... system 75-250 horsepower lsxtm billet throttle bodies lsxtm polymer manifold ·20 hp ... 54001 54003 description stock 78mm throttle body

And..

CarTech, Inc.: Browsing Dyno-Proven GM LS1 thru LS7 Performance PartsThere is power to be had from replacing the stock 78-mm throttle body on your LS1—but don’t expect huge gains, especially if your engine is stock. The GM ...
http://www.cartechbooks.com/vstore/s...=3048&CATID=21 - 27k - Cached - Similar pages


And.....

GM Performance Parts LS2 Crate Motor With New Camshaft And Intake ...As in the previous test, the manifold was equipped with a 78mm throttle body. Despite the 12mm handicap in throttle opening, the LS6 intake easily ...
http://www.vetteweb.com/tech/vemp_06...tor/index.html - 71k - Cached - Similar pages


2000 Chevrolet Corvette FRC LS1 C5 Throttle Body | Chevrolet ...Our plan was to replace a stock LS1 throttle body and mass air flow ... The unit has a 78mm throttle plate that matches the intake manifolds inlet opening. ...
corvettefever.automotive.com/81494/corp-0603-2000-chevy-corvette-frc-ls1-c5-throttle-body-test/index.html - 69k - Cached - Similar pages

Do you need more? All you have to do is a Google search to see even GM has always refered to it as a 78mm.

quikrnmost

If you're not part of the solution, your part of the problem. You are blatently mis-representing your product... END OF STORY!

Your one reason people are confused about the size of the throttle body.

ChocoTaco369

Then go bitch to GM for blatantly mis-representing their product and shut the **** up. They're obviously part of the problem since they labeled it that way. Leave us in peace, jerkoff.

http://www.gmfleet.com/helpCenter/contact_us.jsp

I request the ban hammer

veee8

iTrader: (40)

You are a *****! Go find something else to do, and drop this subject.

oldmanZ06

Last time I checked this thread was asking about a Nick Williams TB. Not asking for Revextreme to throw in a cheap plug about their glorified ported TB.