ks71z28

well, since we had the set up and the thing able to test the two (92 and 102) throttle bodies relatively easy, why not. So you know, we made no fuel or timing changes to the engine and the tests were done back to back. Also we used a Holley Dominator ECU, NOT a MAF stock ECU, so we didn't need to retune for MAF changes because it doesn't have a MAF, its speed density. Enjoy the video, we do this because we have access to a dyno and we tune regularly and we want to learn from our own experiences. I urge you to watch the video, and only comment after watching it. Our findings are only for this combo, but will apply to similar builds, not all builds, We don't make money off our videos, not did we get paid to do these videos. I do put a lot of time into making these, and this is my personal car, which is why I did the testing and video. I want to find the best combo for me. If this is helpful to you, please let me know and like the video and leave comments as well. Bring on the haters, lol

TrendSetter

post results using words here please.

Y2K_Frenzy

Two horsepower.

G Atsma

Yep.
This test confirms a basic truth.
An NA engine needs a certain amount of air at max power.
IN THIS CASE the 92 was enough to feed the engine. The bigger TB did no good at all. The engine is NA, so nothing will make it use more air.
GM actually sized the TBs right on their engines. Tests of bigger TBs on stock engines did nothing, because they all were getting enough air for max power.

TrendSetter

about what i expected.
i tend to note map at wot and as long as its within 1kpa of local atmosphere, your tb is adequate and going larger will probably just negatively affect low speed drivability.

G Atsma

The LS7 has a 90mm TB, and makes 505HP. I have to think WOT MAP is near atmospheric.
Most street engines don't need anything much, if anything larger than the 92 in the above test.

wannafbody

iTrader: (2)

I think the gains people see with the 102 is the shorter runner length of the Fast 102 vs the Fast 92.

Y2K_Frenzy

I think GM did pretty well with their intake tract in general really considering it seems like all of
the gains from manifolds swaps are fairly modest. Even guys with “big” heads & cams (sometimes cubes) seem report a 15-20 horse gain with their 102’s or whatever. In the pushrod Ford 302 world that I came from I saw an 18 horse gain to the wheels just by porting the stock lower intake manifold (it’s a two piece made out of metal). I’m not saying the Ford manifold was better. It was worse since porting it gave gains with stock heads. That being said I think I’d rather be 10-20 horsepower slower than to spend $1k on a manifold for my Chevy but that’s just me.

ks71z28

Or you could take the time to actually watch the video and see the results and have all the information so you don't make comments about things that were covered in the video.

ks71z28

Or you can watch the video and see the results and how we got them, rather than make comments on stuff that was covered in the video.

ks71z28

In this case I was 10-15hp and 15-20tq from 2500-5200 less with the $1000 intake, it did make 2hp and approx 200 more RPM on the top. I would rather have my $1600 I spent on the intake and Nick Williams 103 TB back!

Y2K_Frenzy

Man that’s pretty terrible. I hate that for you.

Y2K_Frenzy

The results really weren’t worth hitting play for to be hones and and nor was the video. I understand free adversing is free advertising but give us something better than a video of a guy sitting in a chair talking about a two horsepower gain. It felt like filler. You know, just content so someone can keep their channel alive.

ks71z28

kinda like some idiot sitting at his computer in a chair making stupid comments. So it would have been more interesting if it make 20hp? No advertising, I have no financial gain to be had. This was an honest test. If I gave your lazy *** the info in the post, whats the point? I spent the time, effort and money to conduct a test that many people here might find interesting or useful, sorry it didn't dazzle you enough. Sometimes reality isn't all that exciting.

TrendSetter

lol you made a 8 minute video about water being wet and what do you expect?

ks71z28

I forgot how many haters there were on the dinosaur forums! Sorry my info was beneath your level or intellect . Right now there are a 100 china 102mm throttle bodies being purchased on Amazon in hopes of unicorn power, If I could just save one of them. Yes I knew the answer as well, well most likely. This is the difference between fact and opinion, sometime we need to point out the obvious. I'm no Richard Holdener, thats a fact.

TrendSetter

We all are having a discussion on the topic, you’re the one getting upset nobody is watching your snoozefest video.
a couple pictures and screen shots of the graphs with a paragraph or two on your observations would have been a very good compliment to posting your video. Plenty of people are not interested in sitting through videos and would rather read words and still images.

G Atsma

Like it or not, the test in the video illustrates what too many refuse to believe- that MOST (not all) LS engines do NOT need a larger TB.
Obvious to many here, but not for far too many who buy larger TB's hoping to get more power out of their mild stock displacement LS.

Y2K_Frenzy

What I’ve been wondering is if a TB is good for little to zero gain then how come people claim gains with air box lids? Weird no?

TrendSetter

its all about pressure drop. ive never owned an F body so im not real familiar with the stock boxes but if the filter and maf cause a flow restriction, it could add power to eliminate that restriction.
it could also be placebo/bullshit.

back in the early 2000s i was helping a friend with a 2000 ss and at the time there was some airflow mod that required cutting some shroud between the radiator and air filter. it slowed the car down because of all the new hot air lol.