Even months later I'm still amazed at how much power these LS3s make, both in stock trim and with bolt ons. 
Ameican Racing Headers/Tune on a LS3
Thread Starter
Melting Slicks
Joined: May 2004
Posts: 3,017
Likes: 2
Ameican Racing Headers/Tune on a LS3
Just back from Tom Wongs shop in Vancouver. He installed a set of American Racing Headers w/cats on my 08. The car baselined at 396hp and 383tq. After the headers and tune it pulled a 424hp and 414tq. The car runs smooth as silk, with just a little deeper exhaust note. This is headers only, stock intake and filter on a MN6.
Last edited by nwc6; Nov 14, 2007 at 12:34 AM.
Team Owner
Joined: Mar 2005
Posts: 20,933
Likes: 905
From: salem OR
Don't NEED to ask. How's it run? Do I!My graph is on here I'm made 421 and 410 with the Kook's. You got Me by 3hp 4tq
on the same Dyno. Pretty close though. My base was only 378
but my base was a lousy run hot with no fan. I had your Vette-air with no air! Car didn't like it!Should have been 385 or better that's why the BIG #'s difference)then 428 and 429 though:on the same dyno.thumbs: these are dyno jet #'s. Mine is Non npp.
Is yours Npp? Anyway we got to get together, I want to check out your car! Great numbers, That Tom is sharp!
C:\Program Files\XnView\WebTemplate\_Default - Frame\img002.jpg
put them side by side, I'm horrible at posting stuff!
Great Job! Great base #'s 396 on the Mustang
, Your's was dam mean stock!
Last edited by 3 Z06ZR1; Nov 14, 2007 at 03:51 AM.
Thread Starter
Melting Slicks
Joined: May 2004
Posts: 3,017
Likes: 2
Was waiting on You Don't NEED to ask. How's it run? Do I!
My graph is on here I'm made 421 and 410 with the Kook's. You got Me by 3hp 4tq
on the same Dyno. Pretty close though. My base was only 378 but my base was a lousy run hot with no fan. I had your Vette-air with no air! Car didn't like it!
Should have been 385 or better that's why the BIG #'s difference)then 428 and 429 though:on the same dyno.thumbs: these are dyno jet #'s. Mine is Non npp.
Is yours Npp? Anyway we got to get together, I want to check out your car! Great numbers, That Tom is sharp!
C:\Program Files\XnView\WebTemplate\_Default - Frame\img002.jpg
put them side by side, I'm horrible at posting stuff!
Great Job! Great base #'s 396 on the Mustang , Your's was dam mean stock!
Don't NEED to ask. How's it run? Do I!My graph is on here I'm made 421 and 410 with the Kook's. You got Me by 3hp 4tq
on the same Dyno. Pretty close though. My base was only 378
but my base was a lousy run hot with no fan. I had your Vette-air with no air! Car didn't like it!Should have been 385 or better that's why the BIG #'s difference)then 428 and 429 though:on the same dyno.thumbs: these are dyno jet #'s. Mine is Non npp.
Is yours Npp? Anyway we got to get together, I want to check out your car! Great numbers, That Tom is sharp!
C:\Program Files\XnView\WebTemplate\_Default - Frame\img002.jpg
put them side by side, I'm horrible at posting stuff!
Great Job! Great base #'s 396 on the Mustang
, Your's was dam mean stock! Yes, I was very impressed by Tom. I'm going to be buying some kind of intake this winter. I am still hoping K&N will come out with a drop in filter for the LS3. Tom wasn't showing much intake restriction on the tech2.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
And thanks going with ARH.
Thread Starter
Melting Slicks
Joined: May 2004
Posts: 3,017
Likes: 2
Already thinking about pulling the intake and TB when I get it put up for the winter so you can work your magic on them.
Nice system you have Nick, and thanks for the advice over the phone. I could have put them on at home, but I wanted a tune done so I just had Tom install them. 31 lb/ft over stock, I was all on the way home from work last night.
Nice system you have Nick, and thanks for the advice over the phone. I could have put them on at home, but I wanted a tune done so I just had Tom install them. 31 lb/ft over stock, I was all
on the way home from work last night.
Last edited by nwc6; Nov 15, 2007 at 08:21 AM.
Melting Slicks
Joined: Nov 2007
Posts: 2,240
Likes: 51
From: South Carolina
Do you happen to know if the MD was set to read out dynojet numbers?
Not that 424 isn't INSANE power already for a car with nothing but headers (congrats by the way
), but if those are legit mustang dyno numbers, that car would have made well over 400 stock on a dynojet.
In either case, you made 15 more RWHP than my cammed/longtube LS2 GTO did....which is why I now understand why I took the plunge and spent all this money on an LS3....
Not that 424 isn't INSANE power already for a car with nothing but headers (congrats by the way
), but if those are legit mustang dyno numbers, that car would have made well over 400 stock on a dynojet.In either case, you made 15 more RWHP than my cammed/longtube LS2 GTO did....which is why I now understand why I took the plunge and spent all this money on an LS3....
Team Owner
Joined: Mar 2005
Posts: 20,933
Likes: 905
From: salem OR
Do you happen to know if the MD was set to read out dynojet numbers?
Not that 424 isn't INSANE power already for a car with nothing but headers (congrats by the way), but if those are legit mustang dyno numbers, that car would have made well over 400 stock on a dynojet.
In either case, you made 15 more RWHP than my cammed/longtube LS2 GTO did....which is why I now understand why I took the plunge and spent all this money on an LS3....
Not that 424 isn't INSANE power already for a car with nothing but headers (congrats by the way
), but if those are legit mustang dyno numbers, that car would have made well over 400 stock on a dynojet.In either case, you made 15 more RWHP than my cammed/longtube LS2 GTO did....which is why I now understand why I took the plunge and spent all this money on an LS3....
Mine made 421 and 410 on the same dyno three weeks earlier.
Melting Slicks
Joined: Nov 2007
Posts: 2,240
Likes: 51
From: South Carolina
424 RWHP on a Mustang Dyno is NUTTY power....
I LOVE this car....
