best shift points for ls1?
04-29-2008, 01:11 PM
#21
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You're the one shifting at 5700rpm.
So what does that beast of yours run?
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So what does that beast of yours run?
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04-30-2008, 01:16 PM
#22
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04-30-2008, 01:21 PM
#24
On The Tree
Thread Starter
yea i have comp valvesprings and pushrod. i only asked for stock because i figured i wouldnt get that many responses if i was cam specific, and since the tr224 aint that crazy of a cam, making more power low end and mid range.
and oh **** i never knew that those things were 4v's. i always thought they were the 2v with a s/c on it. hmm. no wonder those things make power so easy. i love 4v v8's. idk why chevy didnt continue to mess around with one. i would love a zr1 of the 90's.
and oh **** i never knew that those things were 4v's. i always thought they were the 2v with a s/c on it. hmm. no wonder those things make power so easy. i love 4v v8's. idk why chevy didnt continue to mess around with one. i would love a zr1 of the 90's.
Last edited by theycallmealex89; 04-30-2008 at 01:26 PM.
05-01-2008, 08:00 PM
#27
You got me big guy. Haven't actually run in the 1/4, but runs low 8's on street tires in the 1/8th. I'm going to run it on drag radials thursday, so I'll let you know how "slow" it is. I powershift 90% of the time anyway, as you might have guessed. As you know, I'd have to have a "fast" car to not need to powershift. I go thru the lights topped out in 3rd thru the 1/8 so I was guessing on the 4th gear shift. He originally asked the shift points for a stock car, which the ones I posted should be right on. With his mods and hopefully some upgraded valvetrain components he could raise the rev limiter to run where he's talking
8's? slow...
05-01-2008, 11:50 PM
#29
yea i have comp valvesprings and pushrod. i only asked for stock because i figured i wouldnt get that many responses if i was cam specific, and since the tr224 aint that crazy of a cam, making more power low end and mid range.
and oh **** i never knew that those things were 4v's. i always thought they were the 2v with a s/c on it. hmm. no wonder those things make power so easy. i love 4v v8's. idk why chevy didnt continue to mess around with one. i would love a zr1 of the 90's.
and oh **** i never knew that those things were 4v's. i always thought they were the 2v with a s/c on it. hmm. no wonder those things make power so easy. i love 4v v8's. idk why chevy didnt continue to mess around with one. i would love a zr1 of the 90's.
05-02-2008, 06:55 AM
#30
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ran yesterday...8.0 with 1.8 60' launching @ 4 grand powershifting @ 5700 going thru the lights in 3rd hitting my 6100rpm rev limiter
not bad for a stock ls1 with headers huh Unit?
not bad for a stock ls1 with headers huh Unit?
Last edited by PowershifterNC; 05-02-2008 at 10:15 AM.
05-02-2008, 01:35 PM
#31
On The Tree
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i do not understand how you are launching at 4 grand?? thats my weak point. its the lauch without spinning tires. i shoulda bought drag radials... sob. im close to stock, compared to ppl on here anyway, but compared to stock i guess i am a bit modified... bolt-ons, tr224/224 112* cam, 4.11 gears, underdrive pulley kit, the ususal. I NEED FOR AUGUST TO GET HERE SO I CAN GET MY LISCENCE BACK AND TAKE MY BABY TO THE TRACK. i desperately want to know what she runs.
edit: and yea i have upgraded valvesprings and pushrod
edit: and yea i have upgraded valvesprings and pushrod
Last edited by theycallmealex89; 05-02-2008 at 03:06 PM.
05-02-2008, 02:04 PM
#33
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You got me big guy. Haven't actually run in the 1/4, but runs low 8's on street tires in the 1/8th. I'm going to run it on drag radials thursday, so I'll let you know how "slow" it is. I powershift 90% of the time anyway, as you might have guessed. As you know, I'd have to have a "fast" car to not need to powershift. I go thru the lights topped out in 3rd thru the 1/8 so I was guessing on the 4th gear shift. He originally asked the shift points for a stock car, which the ones I posted should be right on. With his mods and hopefully some upgraded valvetrain components he could raise the rev limiter to run where he's talking
05-02-2008, 09:11 PM
#35
yea definately drag radials...16psi, big burnout and side step. I actually launched at 3 on that run...the next run is when I launched at 4 and shifted to 4th before the lights...still 8.00. My last run I got a 1.7 60'
but missed 2nd
but missed 2nd
05-22-2008, 08:52 AM
#36
Couldnt keep my mouth shut... Wow, the guy asked for some advice and thats what he got. Have you driven an LS based car? I have driven a few Cobras, they drive quite a bit differant than any GM product. The Cobras and the GTs liked to be rev'd a little more than our stuff. By the way, an 8 anything is good in the 1/8 mile for a mostly stock anything. Everybody talks smack, but honestly when it comes right down to it, most people are running low 9-10s in the 1/8. Between not knowing how to launch, or not setting up thier suspension for it/investing in good tires. Dont make people not want to share thier opinions and what works for them.
I also dont care how fast or experienced you think you are, or may be. There is ALWAYS someone faster. It may even be the beat up, old 3rd gen Camaro in the lane next to you.
I also dont care how fast or experienced you think you are, or may be. There is ALWAYS someone faster. It may even be the beat up, old 3rd gen Camaro in the lane next to you.
05-22-2008, 09:52 AM
#37
How about a bit of experience from someone who has dynoed a TR224 and driven it a the track?
Traction isn't my friend though so my 60 ft range from 1.9-2.1. My times vary with 60 ft and chirps from my 2-3 shift which I'm hoping to address with a torque arm and better shocks installed already for this year. I run 12.8-13.2 fairly consistently. Nothing wastes more time than having to deal with wheel spin for all of 1st gear, part of 2nd gear. That's with Nitto 555R 315 drag radials and 4k clutch dumps.
My setup has my TR224 112 peaking in HP about 5800-5900rpm with peak torque around 4200rpm. General rule I've followed is to shift a few hundred rpm PAST the peak HP of my setup. That has me shifting around 6200rpm, my rev limiter is set to 6500rpm. Torque curve on my setup is fairly flat though I peak at 373, even up to 6000 I still have 360ft/lb on tap. Ideally you want each shift to drop you right about the peak torque of your curve. Since each gear change in a m6 is roughly 33% reduction in RPM EXCEPT for 1-2, 2-3 and 3-4 is best served with the 6000rpm shifts as it drops it to 4000rpm roughly. 1-2 has a larger gap which as the theory goes wants you to shift a bit higher.
That's all fine in theory, but you have to experiment with your setup as there are dozens more variables to consider than dyno numbers and most of them will deal with the traction you have on hand or rather what you don't have. I've seen Cobra's run 13's and 14's with ridiculous 115mph trap speeds all because the driver can't drive or hook if his life depended on it.
Traction isn't my friend though so my 60 ft range from 1.9-2.1. My times vary with 60 ft and chirps from my 2-3 shift which I'm hoping to address with a torque arm and better shocks installed already for this year. I run 12.8-13.2 fairly consistently. Nothing wastes more time than having to deal with wheel spin for all of 1st gear, part of 2nd gear. That's with Nitto 555R 315 drag radials and 4k clutch dumps.
My setup has my TR224 112 peaking in HP about 5800-5900rpm with peak torque around 4200rpm. General rule I've followed is to shift a few hundred rpm PAST the peak HP of my setup. That has me shifting around 6200rpm, my rev limiter is set to 6500rpm. Torque curve on my setup is fairly flat though I peak at 373, even up to 6000 I still have 360ft/lb on tap. Ideally you want each shift to drop you right about the peak torque of your curve. Since each gear change in a m6 is roughly 33% reduction in RPM EXCEPT for 1-2, 2-3 and 3-4 is best served with the 6000rpm shifts as it drops it to 4000rpm roughly. 1-2 has a larger gap which as the theory goes wants you to shift a bit higher.
That's all fine in theory, but you have to experiment with your setup as there are dozens more variables to consider than dyno numbers and most of them will deal with the traction you have on hand or rather what you don't have. I've seen Cobra's run 13's and 14's with ridiculous 115mph trap speeds all because the driver can't drive or hook if his life depended on it.
05-22-2008, 01:26 PM
#38
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