racecar

My friend bought the LS2 90mm TB, intake, injectors and fuel rail for his 2000 Corvette. It has a nice fuel rail, but "Dude, where's the fuel pressure regulator" His 2000 LS1 had the regulator on the fuel rail. Where is the regulator on a LS2 Corvette? Where do we get a regulator for this setup, and where is the easiest place to put it in the fuel line. Thanks

99huggerorangeZ

iTrader: (2)

the regulator is in the tank(fuel pump assembly),the regulator looking thing on the rail on the ls1's is actually a fuel pulse dampner.

racecar

All right !! That's good news. Are we OK without the pulse dampner. Can we just bolt a LS2 fuel system onto a LS1 and go for it.

theguyulove2hate

iTrader: (5)

that is how I am running it on my Camaro with no problems.

racecar

Right On. This is going on a new engine, We will be able to fire it up in a few days.

hivoltagedriver

iTrader: (1)

Unless you are going to port that intake, it flows worse than the stock LS1 intake - even with the 90mm TB. The stock LS2 intake sucks.

KENS80V

iTrader: (16)

The LS2 intake flows better than the LS1. It keeps up with the LS6 too. Here is a good comparison http://www.tpis.com/index.php?module=2_17_06 About the only manifolds that are better are Fast and a LS6 manifold with the nose cut off and a 90mm nose installed.

InsaneDomestics

iTrader: (28)

Right...Because GM Is Going To Make A Newer Model Intake (LS2) That Is Worse Than The Previous Model Intake (LS1) They Designed

69LT1Bird

iTrader: (1)

You should recheck the regulator location, the F cars have the regulator in the tank, the Corvettes have the fuel filter/regulator in the fuel line outside the tank I believe.

hivoltagedriver

iTrader: (1)

And you know this from experience? Do you own an LS2, or are you just talking out your ***? The LS2 intake has been proven to be the worst flowing stock LSx intake, but suite yourself and put whatever you want on your slow-*** car. They are, in fact, the limiting factor in an LS2 car making any power at all. And we all know that GM ALWAYS does what's best for performance and our interestes as car enthusiests. That's why the F-body's had the crappy 7 5/8" axle in the 4th gen, even though the same basic rear end proved to be **** in the 3rd gens.

Sales2@Texas-speed

iTrader: (5)

The LS2 intake was a major let down when everyone was hoping it would be a VERY budget friendly 90mm setup. However, I wouldn't say it's the worst GM put on these engines or this platform.

smok'nZ

iTrader: (160)

wow now it looks like highvoltage is talking out of his *** there is a thread floating around somewhere where a ported LS2 has mad 1 less hp and 2 les torque torque than a non ported fast 90 i belive LT1dave was the tester

also highvoltage can you show me where an ls2 intake flows less than an LS1 i would REALLY like to see that

KENS80V

iTrader: (16)

I've read the same as "smok'nz". A stage 2 ported LS2 will outflow the LS6 and nearly keep up with the Fast. If you have to buy a LS2 then port it...it might not be worth the expense verses a used or new Fast. If you already own one then the extra $300 to have it ported might be money well spent.

Also if the car is mainly street driven and isn't revved past 6200rpm very often then the difference between them is very small.

hivoltagedriver

iTrader: (1)

Yeah, but we weren't talking about a ported LS2 (or at least that wasn't included in the provided information.)

Here is some more info for you on this topic...
http://www.ls1gto.com/forums/showthr...ght=ls2+intake
http://www.gearchatter.com/viewtopic10974.php
http://www.gearchatter.com/viewtopic...er=asc&start=0

racecar

No, his LS2 intake is not ported. He is considering having it cut open and ported, except he is running out of money after his engine build so I told him to leave it alone. Let's get this thing running, it's easy to replace the intake later. Over the last 6 months he bought all of the parts for a L92 forged bottom end. He has Patriot LS6 heads, and a 228/234.288/.598 cam. It's pretty similar to the my engine specs (in sig) with a few less degrees on the cam, and the LS2 intake. Basically L92 with a LS6 top end. Mine made 482rwhp, so this will be a good test of similar parts. We will post dyno numbers when we get it going.

hivoltagedriver

iTrader: (1)

I can understand the running out of money deal. If he had an LS1/6 intake already, I would keep it. If not, and you can get an LS2 intake cheap, then by all means, run it for now. Just putting the info out there, because a lot of people here seem to think that the LS2 intake is great because of the 90mm TB. All of us LS2 guys are finding them to be a big restriction though.

InsaneDomestics

iTrader: (28)

So Your Still Sayin You Would Run An LS1 Intake Over The LS2 ???

racecar

That is in interesting test. Most intake tests show the numbers like the Highvoltage links, where the LS2 intake is not as good from 5000 up.
The link from KENS80V is a motor with a cam, LS2/90 vs FAST 90. They both make about the same power at 4000 and 6000, but the FAST is better at 5000. Different numbers from a hotter motor. The LS2 intake is not the best, but it is not all bad. The Fast are good, but expensive.
My friend will be fine for now with his LS2 intake, I would not want his new motor to make more power than mine right out of the garage.
He broke a rod bolt in a road race last summer and totaled his LS1, so it has been a long and expensive fix. Right now he just needs to get this new forged motor to run. I have walked him through every step of this engine build, can't wait to hear that thing rev.

smok'nZ

iTrader: (160)

been there justa little tip i wouldnt listen to someone who comes in the thread just to say that intake is junk and worse than the intake they made 10 years ago

and then posts links to where its worse but none of them are from ls1tech?? also he must have spent some time looking for those i wonder what he could find if he looked into it further? like maybe the people who run 10's na with them etc.. good luck with helpin your friend

InsaneDomestics

iTrader: (28)

I Wonder If He's Running The LS1 Intake On His Goat...