Which Transmission ? C'mon Epstein
LOL, i was calm??
Internetz strew seriousness levels

Thanks for the info Z28, i was thinking numbers should be a bit higher. My buddy with K&N Air Intake, Intake, Exhaust, headers, and tune managed to put down a almost even 410HP 415TQ
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Found my spreadsheet....
So with the data you gave me, the MN12, a 3.538, and assuming a 2700 lb car:
Your peak accel in 1st is about 45ft/s^2 or 1.4G, which you'll probably never get without a slick and drag suspension, which means you'll always blow away 1st even though it'll run out to 50mph on your 255. Just for reference, I'd blow away 2nd in my S13 on street R's with 34ft/s^2 accel.
So 1st goes to 50, 2nd to 72, 3rd to 104, 4th to 149, 5th to 177, and 6th to 266mph.
RPMs drop to 5.0k shifting at 7100 in 1-4, with 5th dropping to 6k.
In 6th at 2k you'll be doing 75mph.
In the race sim part, it's still slower than my old 425whp S13, but not by much. That dyno chart has a ton of area under the curve, even though it's about 40whp light.
So with the data you gave me, the MN12, a 3.538, and assuming a 2700 lb car:
Your peak accel in 1st is about 45ft/s^2 or 1.4G, which you'll probably never get without a slick and drag suspension, which means you'll always blow away 1st even though it'll run out to 50mph on your 255. Just for reference, I'd blow away 2nd in my S13 on street R's with 34ft/s^2 accel.
So 1st goes to 50, 2nd to 72, 3rd to 104, 4th to 149, 5th to 177, and 6th to 266mph.
RPMs drop to 5.0k shifting at 7100 in 1-4, with 5th dropping to 6k.
In 6th at 2k you'll be doing 75mph.
In the race sim part, it's still slower than my old 425whp S13, but not by much. That dyno chart has a ton of area under the curve, even though it's about 40whp light.
Can you upload this spreadsheet?
Found my spreadsheet....
So with the data you gave me, the MN12, a 3.538, and assuming a 2700 lb car:
Your peak accel in 1st is about 45ft/s^2 or 1.4G, which you'll probably never get without a slick and drag suspension, which means you'll always blow away 1st even though it'll run out to 50mph on your 255. Just for reference, I'd blow away 2nd in my S13 on street R's with 34ft/s^2 accel.
So 1st goes to 50, 2nd to 72, 3rd to 104, 4th to 149, 5th to 177, and 6th to 266mph.
RPMs drop to 5.0k shifting at 7100 in 1-4, with 5th dropping to 6k.
In 6th at 2k you'll be doing 75mph.
In the race sim part, it's still slower than my old 425whp S13, but not by much. That dyno chart has a ton of area under the curve, even though it's about 40whp light.
So with the data you gave me, the MN12, a 3.538, and assuming a 2700 lb car:
Your peak accel in 1st is about 45ft/s^2 or 1.4G, which you'll probably never get without a slick and drag suspension, which means you'll always blow away 1st even though it'll run out to 50mph on your 255. Just for reference, I'd blow away 2nd in my S13 on street R's with 34ft/s^2 accel.
So 1st goes to 50, 2nd to 72, 3rd to 104, 4th to 149, 5th to 177, and 6th to 266mph.
RPMs drop to 5.0k shifting at 7100 in 1-4, with 5th dropping to 6k.
In 6th at 2k you'll be doing 75mph.
In the race sim part, it's still slower than my old 425whp S13, but not by much. That dyno chart has a ton of area under the curve, even though it's about 40whp light.
Thank you
Yeah i'd expect it to be slower than a car with 30-40 rwhp more, but hey its all the torque in the earlier RPM that will make it nice to daily drive, if I run across someone with up to 550 RWHP, the bottle *should* have me covered

Although i'm guessing the weight will probably be more like 2900 or so, complete with me in it.
Last edited by Z28ricer; Nov 23, 2009 at 02:18 PM.
No sorry?
I'm not going to argue or make up lies from a dyno i personally saw take place, as well as the dyno sheet in my face.
I mean if it doesnt agree with you then thats fine but i'm not out to impress anyone with my friends cars stats. Nor am i a liar as anyone who knows me can verify lol, especially about something like this.
I'll see if i can get ahold of him for a picture or video of the dyno but i'm almost positive hes leaving for thanksgiving to see family up north.
I'm not going to argue or make up lies from a dyno i personally saw take place, as well as the dyno sheet in my face.
I mean if it doesnt agree with you then thats fine but i'm not out to impress anyone with my friends cars stats. Nor am i a liar as anyone who knows me can verify lol, especially about something like this.
I'll see if i can get ahold of him for a picture or video of the dyno but i'm almost positive hes leaving for thanksgiving to see family up north.
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Last edited by tuner1989; Nov 23, 2009 at 02:28 PM.
No sorry? I'm not going to argue or make up lies from a dyno i personally saw take place, as well as the dyno sheet in my face.
I mean if it doesnt agree with you ok but i'm not out to impress anyone with my friends cars stats. Nor am i a liar as anyone who knows me can verify lol, especially about something like this.
I mean if it doesnt agree with you ok but i'm not out to impress anyone with my friends cars stats. Nor am i a liar as anyone who knows me can verify lol, especially about something like this.
The camshaft simply doesnt have enough lift and duration to do the numbers, countless cammed LS1 cars generally put down 390-430 RWHP, with a mild, to healthy cams, your buddys car isnt magical, its also possible someone installed a cam before he got it.
Maybe, ill have to pay him a visit now you made my curiosity rise. It sure as hell pulled hard when i drove it, my guess since i know you know more about these engines then me, is that the dyno wasn't calibrated properly.
He bought the GTO from a lady in her 30's original owner, so a aftermarket cam is most likely out of the question.
He bought the GTO from a lady in her 30's original owner, so a aftermarket cam is most likely out of the question.
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What year gto ? 04's are 5.7 05-06 is the 6.0 LS2, the 05-06, maybe a little closer to what you said, but still not gonna get there without a cam.
Heres another one to compare, 6.0 car, 224/228 cam, ported stuff, full exhaust, 422 rwhp / 414 rwtq.
2005 Pontiac GTO LS2 JBA Headers Dyno Sheet Details - DragTimes.com
Heres another one to compare, 6.0 car, 224/228 cam, ported stuff, full exhaust, 422 rwhp / 414 rwtq.
2005 Pontiac GTO LS2 JBA Headers Dyno Sheet Details - DragTimes.com


