Is the FAST LSX worth it for all bolt-on cars?

[Cobraeater]

I have all the bolt-ons, and after reading TSP's test and Thunder's Racing LS1 to LSX test I'm not sure I should buy it. The LSX looks definetly worth it for the larger than stock ci setups, and the extreme h/c setups with the 90mm tb and intake, but what about the bolt-on and cam only guys? :huh:

With the LS6 intake I gained 7hp and 10torque over the LS1 with bolt-ons, but what would the LSX do? I know anybody with the stock exhaust manifolds and stock cats should skip the LSX based on TSP's results.:bashhead:

[wannafbody]

i'd say not-$750 is a lot for maybe 10 hp

[Darkhalf]

Yeah I agree I think the bigger cube motors will show the most gains.

[bRa_DeN]

i would just stick with your ls6 intake, unless like you stated you plan on changin cubes:cool:

[Cobraeater]

Originally posted by Darkhalf
Yeah I agree I think the bigger cube motors will show the most gains.

I don't know LG and two other guys have tested the LSX on head/cam cars and got 15-20rwhp, so it looks worth it to me on a 346ci motor.

[PC PaiN]

It all depends on setup and if you want to squeeze every little turd of a HP out of the motor. I personally don't think it's proven its cost yet.

[Xerxes]

I think someone tested one with the 90 MM TB and picked up around 18-20RWHP on a 346. IMHO, it's only worth it if you pick up the matching TB at the same time.

[Constrictor]

If you already have the LS6 intake and think you can sell it to someone for maybe $300 or something, then perhaps it would be worth it. Especially if you thought about heads/cam or maybe cam only in the future.

[Packy]

I would say save your money for better flowing heads and a cam! Then just have the stock throttlebody ported!:D

[bRa_DeN]

Originally posted by Packy
I would say save your money for better flowing heads and a cam! Then just have the stock throttlebody ported!:D

exactly right;)

[5.7 LS1 SS]

Originally posted by Packy
I would say save your money for better flowing heads and a cam! Then just have the stock throttlebody ported!:D

Couldn't have said it any better

[bRa_DeN]

now i can see the lsx intake being very worthwhile if you spraying on forged internals, with that direct-port system hook up they have;)

[JohnnyLS2]

Well, I have a heads/cam car and plan on getting the LSX intake manifold in the future, I'll make sure to fill you guys in.. :)

[1CAMWNDR]

Originally posted by Packy
I would say save your money for better flowing heads and a cam! Then just have the stock throttlebody ported!:D
:werd: :stupid:
Unless you have a serious effort heads and cam car I doubt it will be worth it.
Or if you have the Direct Port Nitrous like stated above. I don't see the 90 mm version doing a damn thing for a 346 inch car.

[NaSSty01]

Originally posted by Packy
I would say save your money for better flowing heads and a cam! Then just have the stock throttlebody ported!:D

:stupid:

If anything, you should get a cam. If you have the cash, pickup a set of heads too.

I need to start searching. I've just about got the wife talked into letting me have the entire tax return for mods.

11.doh's or bust!
:yay:

[wannafbody]

for a car set up with AFR heads that could theoretically flow 330plus cfm and a 230 plus duration cam the LSX with a 90mm TB would probably show a 20-25 HP gain over the LS6 but youd better have deep pockets

[JS12]

if you plan on doing more stuff in the future then i would get it or like someone else said, if you are trying to squeeze every ounce of power out then i would do it.

[jrp]

dont forget that the lsx is portable and as far as i know not testers have portmatch the setup. yes, its expensive, but port matched, bigger TB, and a nice h/c or even cam'd/bolt on the gains would be nice.

for now though i'll stick with my ls6 and pick up an s2/s3 down the line.

[2000 Tran Zam]

well i have the intake on my car now, i have to finish fixing my exhuast leak, but hopefully ill be able to get a dyno tune this next week or weekend. Mods in sig.

[2000 Tran Zam]

ok, apparentely sig isnt working for some reason, so here it is:

2000 Ws6 Trans Am
Mods: Ftra, direct flo, iridium plugs, taylor wires, Pacesetter headers and oryp, borla wide open, S3 TB, LS1 Edit, Katech Stage 2 heads/ TR 224 112 lsa cam package, LSX intake manifold, ZR1 replica rims 17x11 and 17x9.5 on 315 nitto DR, Spec 3 clutch.

Suspension: Random Tech. Adj. torque arm, BMR tubular LCA's, BMR adj. panhard bar.

[mics2fbodies]

Originally posted by wannafbody
for a car set up with AFR heads that could theoretically flow 330plus cfm and a 230 plus duration cam the LSX with a 90mm TB would probably show a 20-25 HP gain over the LS6 but youd better have deep pockets

Well I would be interested in seeing this because I bet it dosen't.

[JCS30TH]

Has anyone put this manifold on a stock ls1 and dyno'd? I think the claim of 20hp over stock is a little wishful:o

[jrp]

Originally posted by JCS30TH
Has anyone put this manifold on a stock ls1 and dyno'd? I think the claim of 20hp over stock is a little wishful:o

not bone stock but a typical setup

http://www.ls1tech.com/forums/showpost.php?p=995513&postcount=6

[JCS30TH]

Damn 20 hp out the back. With a lid and that intake, seems like you would be putting out almost 40 HP at the crank over stock?

So a typical LS1 with a lid and that intake would be around 380 at the crank? I might have to look into this thing....

[Cobraeater]

Here's a post from ls1tech about the gains with full bolt-ons.


Tested one at the shop on a stock internals car, full bolt ons. Before LSX power was 350/367. After LSX was 350/370. Disappointing to say the least. Customer wanted his LS6 intake put back on. Can't say I blame him.

The car was a 2002 SS with about 4000 miles on the clock. Pulley, Jet Hot headers, loudmouth, lid, and no cats,etc.


:(

Here's the link.
http://www.ls1tech.com/forums/showthread.php?t=131732&page=2

[2000 Tran Zam]

Ya, but look at this one with the same cam that i have. i dont know what heads it has, but ive got stage 2 heads also, so i would hope for something similar...

two LSX dynos on our dyno

1) Heads/Cam, 224/224, everything, 419 rwhp/ 405 rwtq /w LS6

After LSX 440 rwhp/ 420 rwtq

2) Patriot 5.3 Stg2 heads, TSP 231/237 cam, everything car - 405 rwhp /w ls6
after LSX 420 rwhp

[DVST8OR]

I think that it is really going to take some internal modifications for this thing to show its colors, i.e. heads, cam, or both.

This intake is also a star for the nitrous crowd because it has provisions for direct port.

I defenitely see good gains from a H/C car and getting the intake port matched, which is what I will do if I get this intake.

[Durien512]

lets see what the ls2 does...and if it does something..the lsx's price should drop

[jrp]

Originally posted by Durien512
lets see what the ls2 does...and if it does something..the lsx's price should drop

agreed, i see the ls2 comming in cheaper, but that still leaves you with the need for a 90mm TB, which is gonna cost a pretty penny.