Dyno Tested: FAST 102mm LSXR Intake Interchangeable Runners
Вставка
- Опубліковано 21 сер 2024
- FAST's LSXR set the standard for aftermarket LS intakes when it was first introduced, and now it's available with two new shorter internal runner lengths in addition to the original design to match different RPM and displacement combinations. We test all three back to back on a 5th gen Camaro to see how the powerbands compare.
View more at: www.lsxmag.com
SUBSCRIBE to the POWERTV UA-cam Channel -- www.youtube.com...
*****
Visit Power Automedia's Online Magazines! Power Automedia is the #1 Automotive Performance Digital Publisher!
Ford & Mustang - www.stangtv.com
LSX GM - www.lsxmag.com
Hot Rods & Muscle Cars - www.streetmuscl...
Drag Racing - www.dragzine.com
Street Rods! - www.rodauthorit...
Chevy Muscle Cars - www.chevyhardco...
Engine Performance - www.enginelabs.com
Corvette - www.corvetteonl...
Off Road - www.offroadxtre...
Diesel Trucks - www.dieselarmy.com
Sport Compact - www.revvedmag.com
Performance Driving - www.turnology.com
![Testing LS Intakes! Which LS3 Intake Makes the Most Power? [Can Stock Keep Up?]](http://i.ytimg.com/vi/uMYlKeNmFuI/mqdefault.jpg)
![Testing LS Intakes! Which LS3 Intake Makes the Most Power? [Can Stock Keep Up?]](/img/tr.png)
"We arent just gonna talk peak numbers..." (proceeds to only show peak numbers)
Uh. Did you actually watch the video. 5:06
@@rickyr7790 obviously you didn't lol because those were peak numbers at 5:06 for each runner size 🤣
@@The1st60ft dude. Look at the curve.
@@rickyr7790 yeah it's sooo detailed!!
@@The1st60ft detailed for what. Area under the curve is what matters. Its different for each application. Geeze. Just go buy a fkn tornado air intake 🤣
Wonder how it would have done with the runners removed
The full length smoked the others, look at the power undeer the curve.
Look at the torque, but the others are for cams, turbos etc.
You should overlay all three dynographs so we can see the area under the curve comparisons. I think this would give a better comparison of how the different runners affect he power-band.
craracer0505
they did.
5:06 has the overlay.
thanks, i didn thave to watch this horrible video..
long for low end tq, mids for everything else, judging by the dyno curves i thiink the shorts are interfering with each other. would be interesting to see shorts on 7 and 8 mids on 3 4 5 and 6 and longs on 1 and 2
I wondered the same as old mechanical fuel injection stacks were often alternate lengths.
Those low numbers in torque concern me.... 5:07
The stock LS3 intake is a good piece. The gains are small.
This will only work if u cammed
Would probably work wonders on a destroked LS7 at 8500 rpm!
Stock ported LS3 manifold with a 102 on it. Best all-rounder.
If you gonna spend $1000 on an Intake for 20HP, you could source a low milage LSA supercharger for $2000 and add 200HP Boost Baby
i know Im randomly asking but does any of you know of a tool to log back into an Instagram account?
I was stupid lost my password. I would love any help you can offer me!
@Apollo Eli instablaster :)
@Crew Alexis thanks for your reply. I found the site thru google and I'm in the hacking process now.
Takes quite some time so I will reply here later when my account password hopefully is recovered.
@Crew Alexis it worked and I now got access to my account again. I am so happy!
Thank you so much, you really help me out!
@Apollo Eli No problem :)
Would like to see this same test on a 415 LS3. I am particularly interested in an E85 version running 13:1 and this intake. 725fhp? As you pointed out, this engine ran out of cid.
Stock LS3 intake is dyno-proven to be about as good for WAAAAAAY less money.
Great content. Looking forward to seeing me technical analysis like this, very helpful.
Thanks for watching! :)
Why don't you make them constantly variable instead of interchangable? This is last century technology
So who's building a variable (auto even) intake runner setup?
Mazda 787B.... Well ok it is a Wankel and they like a 2 stroke are even more tuning oriented... but yeah the runners telescoped and really flattened out the torque curve...
I’m building a all motor g8 gt 6.0 got ss4 gpi cam , headers , bigger injectors , vcm cai , ported 823 heads , and went with the 102 fast lsxr manifold with the 102 billet tb and I did also buy the short runners to go in the manifold, but my question is I seen a guy run a 11.7 with the upgraded runners and he said he ran a 11 flat on oem runners any idea why ?
Will the runners fit on the stock manifold I originally wanted the lsxr manifold I'm hearing there's fitment problems that modifications have to be made to the firewall on the C6 Corvette
Which runners for a 13.3 compression 402 with 251/266 . 63X"/.595" 112+4 cam would be best in ur opinion??
As the hp goes up, the torque comes down. Tough sell
Horsepower will make the difference on how fast you get to the wall, torque makes the difference on how hard you smash through it.
@@puppetmasterblaster heard that like 9 years ago
Horsepower is how hard you hit the wall,Torque is har far you moved the wall.
@Abelsgarage_ Im lookin to move the wall.
Can they fit on a ls2 with the 92mm fast manifold intake?
Yea
@@juanvillanueva5187 have you try them?
Yea I have one with a ls1
@@juanvillanueva5187 Nice thanks man🤙🏻
What are the part numbers for the medium runners and the shortie sets?
www.fuelairspark.com/fas/fastr-lsxr-high-hp-intake-manifold-runner-sethtml/
When I seen that kinda made me feel like I wasted $400 on those race runners
For $1400 for a few horsepower.....
It don't cost 1400
@@Lex-uf8ju $980 for the intake+ a throttle body and fuel rails. How much is it then smart guy?
A fuel rail ain't gonna give you horsepower bro 🤣🤣😂😂. I can get them cheaper due to a friend. But your right tho
Wasn't that a pushrod engine? How'd they get over 7k without valve problems? Did they use tricks they and just not mention it? The torque band looked weird on the 3rd run.
Upgraded valve system, springs, retainers lightweight valves
You can wing the engine a little higher for short periods of time. Just because it's a pushrod setup doesn't mean it's going to fly apart at high speeds. People just don't understand that putting cams in their engines requires them to rev higher. If you add 30% more cam timing, the engine has to go 30% faster. 6000rpm becomes 7800. That in itself is hard on parts, Pushrod or DOHC have the same pain. So, we get around that with stroker kits and tuned headers. The factory setup runs at about 96% V.E. With a stroker crank, you get 110% v.e. with 10% more displacement, for a total of 5% more speed, or 6200 RPM. You'll find that every cammed Ls7 will make peak torque below 6200, and every street driven one will start to flatten out at around 5500, with enough over-rev to make the shifts feel stronger.
Because it’s a LS for one lol. I see pushrod engines hit 7 grand a good amount. Guns cars and digits Explained it well In my opinion. It’s not like it’s a old 455, 454, 428 Or most of the old big blocks that when they over rev your basically playing with fire. May I ask if your more of a ford guy. Personally I despise overhead cams no matter what configuration I just think they’re unnecessary Expensive more Complicated For no reason and I think they were just a selling point for ford basically they’re play separating themselves from GM and Mopar. The 426 Hemi Could even have that sad about it if the engine Truly wasn’t a brilliant design except for the weight. They got the title of the elephant for a reason powerful and heavy. Also look at Ford’s new engine in the shelby If I’m not mistaken. It revs out to the Moon close to 9000 RPM I think but from everyone’s review that I’ve seen without driving Personally say that Even though I was a man so high they lack so much torque That if they didn’t have the extra Rpm’s to make up the gap when the LS’s or Hemis have to shift they would just be blown out of the water. Call the other end a sound of a Nice V8 With those different exhaust modes Could sell the cars on the road their own they should just play that in the showroom instead of music LOL.
It is not always about Valvetrain to make it spin fast, Yes valve float is important but Piston speed has a lot to do with it.
Take a Ferrari 360 for example, Big pistons small stroke! Bore & stroke: 85 mm × 79 mm (3.35 in × 3.11 in) 400HP and only 275 ft.lbs but turns 8500 RPM,
Suzuki GSXR :74.5 mm × 57.3 mm (2.93 in × 2.26 in) 1Liter displacement 156WHP and only 76ft.lbs. with max RPM 12,000, the 600 turns 14,000. all without pneumatic valves like in 18,000RPM Formula 1 Cars.
I know of dirt circle track pushrod V8's that turn 9-10K RPM. And There are some LS Chevy purpose builds that can turn 10K even 11K RPM. A lot of them are Destroked engines like a 6.0 Block with a 4.8Liter crankshaft.
My LS6 can handle over 7,000 easily, i have the limiter set 6,600 since it does not really make much power after that. I put in dual beehive valve springs to handle the load of a bigger cam. Also I have installed chromoly push rods with a better oil pump.
900$ for 14 to 20 hp yea no thanks