Ls2 lacking power?
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Teching In
Joined: Feb 2016
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Ls2 lacking power? I have a 2004 Gto with a 2005 Gto ls2 in it. It has Dynatech long tubes, catless, flowmasters along with 3 inch piping all the way back, btr stage 3 cam, fast 102, nick williams 102 tb, and a varam intake. It put 432/400 to the wheels. I feel like that's a little low. By what I could find on here a lot of people put 470 with a cam and intake. If you have a cammed ls2 please let me know what you make.
mine made 418 rwhp through an automatic with unlocked stall with:
ported 799 heads
230/238 cam
longtubes, 3" duals
Fast 90mm intake (mild port)
underdrive pulley
I have serious doubts of making an honest 470rwhp with stock heads. A LS2 will make similar power to a LS6 if the same heads/cam are used...the cubes allow you to run better flowing heads/cam and still have good manners, the small jump from 5.7 to 6.0 in itself is not going to give you a large HP gain but it will help torque and move the powerband down.
As expected your car makes a little more power (10-15hp) than a 243 headed ls1/ls6 but about 20-30 more ft/lbs rwtq.
It takes a very well optimized and thought out combo to get 470-500rwhp from a 5.7-6.0 shortblock. There are ringers and generous dynos of course, but I'm talking averages.
ported 799 heads
230/238 cam
longtubes, 3" duals
Fast 90mm intake (mild port)
underdrive pulley
I have serious doubts of making an honest 470rwhp with stock heads. A LS2 will make similar power to a LS6 if the same heads/cam are used...the cubes allow you to run better flowing heads/cam and still have good manners, the small jump from 5.7 to 6.0 in itself is not going to give you a large HP gain but it will help torque and move the powerband down.
As expected your car makes a little more power (10-15hp) than a 243 headed ls1/ls6 but about 20-30 more ft/lbs rwtq.
It takes a very well optimized and thought out combo to get 470-500rwhp from a 5.7-6.0 shortblock. There are ringers and generous dynos of course, but I'm talking averages.
It put 432/400 to the wheels. I feel like that's a little low. By what I could find on here a lot of people put 470 with a cam and intake. If you have a cammed ls2 please let me know what you make.
I wouldn't really think that a cam only LS2 is truly around 470 unless it's a monster cam with all other supporting mods. Most likely what you are seeing with those kinds of numbers are either loose dynos or STD corrections.
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I agree, nothing wrong with those numbers at all. You ain't touching 470 rwhp with stock 243's in a NA setup.
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exhaust fumes in a closed room? 
There was a high altitude kid that claimed (with dyno as evidence
but no time slip) his little WRX put down something north of 800awhp. Did it on oxygenated E85 using a gracious dyno pushing the tune to the brink without correction.
Not sure what happened to that one after it TRIED to make a pass and puked the driveline onto the track. Maybe they know each other.
There was a high altitude kid that claimed (with dyno as evidence
but no time slip) his little WRX put down something north of 800awhp. Did it on oxygenated E85 using a gracious dyno pushing the tune to the brink without correction.Not sure what happened to that one after it TRIED to make a pass and puked the driveline onto the track. Maybe they know each other.
Teching In
Joined: Mar 2013
Posts: 30
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From: Fulton,MO
I am running Trick flow heads, fast 102/nick williams throttle body and fast fuel rails and a vengeance racing "vindicator" cam comp cams trunion upgrade Yank 4000 and strange S-60 with 4.10's 435hp/390tq to the wheels on vengeance's dyno 2002 LS1 CETA
https://ls1tech.com/forums/dynamomet...ossible-n.html
No magnacharger needed. Be the wrong blower anyway.
Yea if it was on a dyno jet it would make around that. Those numbers are through a 10bolt and it has a 9" now so that could hold it back a little. But i also making a few changes to what i am hoping will result in more power.
Yea if it was on a dyno jet it would make around that. Those numbers are through a 10bolt and it has a 9" now so that could hold it back a little. But i also making a few changes to what i am hoping will result in more power.
Last edited by HioSSilver; Apr 2, 2016 at 08:10 AM.
