what mods really help the low end torque. cause i dunno if its all ls1's or just mine but it damn near falls on its face below 2500 rpm.

 

the simplest two would be catback, and cai.

 

longtube headers + true duals with an H-pipe should really boost your low end.

yes, it's the LS1. it makes is power in the second half of the RPM range. thank the LS1 for that. we get our good mileage because it puts out low power down low under normal driving

 

when I put on my longtubes and x-pipe it felt like I lost low end.

 

lts normally move your peak torque up

 

well they wont help low end torque, but gears will get you up to were you make power quicker.

 

Good cam/gear combo.

 

thanks yall, i got my l/t's and im gonna get t/d with single chamber flows and an h-pipe. but as for the gear im kinda scared cause of the 10- bolt horror stories.

 

with street tires on the street you will be fine. especially if your an A4. just make sure you set it up correctly, and do a proper break in on the gears.

 

Excuse me for being an *******, but I can't ever remember a need for low end torque. When racing at the track.. you should never been launching the 6spd under 2-2500 unless on street tires.... and when racing on the street you should always be able to grab a decent gear and be at 4k or above.

 

Perhaps when his ar stumbles below 2500 RPM perhaps its not low end torque of the LS1 which he is talking about, perhaps he has something wrong with his setup. fuel mixture, something throwing off some values like O2's, its any ones guess.

 

This is a little odd.

The Ls1 makes loads of low end lb ft, in fact in makes 90% of it's PEAK torque at only 1500rpm and then holds pretty flat all the way upto 4400rpm where the stock motor makes its PEAK torque.

By contrast the LT1 engine PEAKS at nearer 2500rpm and drops off rapidly. Interestingly a LS1 actually is making more lb ft at 1500rpm than the LT1 makes at PEAK. This means the sensation of driving the LS1 is quite different to previous small block Chevy's.

When you say "falls on its face" what do you mean? Does it stutter, die or what?

In the low gears (1st and 2nd) 2500rpm should be quite snappish with an M6 car. The higher the gear the greater the effort to accelarate so performance will feel more sluggish at lower rpms, but this is normal for all cars.

I'd be tempted to try and drive another stock LS1 M6 for a comparison. If it's very different, then there's something up with yours.

For increased sensation there are lots of mods you can perform. Swapping the final drive ratio to a lower gearing (numerically higher) such as 4.10:1 gears will make it rip thru the gears faster and make the engine feel more powerful. The cost is loss of terminal speed in gear. Most are happy with the trade off though, and if I had a M6 I'd def go with 4.10 gears.

However sadly doing this will increase the chances of breaking the rear end, as they are far to weak for the LS1.

More power means more torque. However as:

HP = torque x rpm / 5252

it generally means to get more power you have to move the torque band up the rpm band.

Adding long tube headers and the other mods will move the torque band up the revs, this means as the PEAK torque chances place it also moves the sides of the torque curve and at lower rpms will often reduce torque because at the same rpms you are know further down the torque band (in picture form this is really easy to understand, but words make a mockery of it )

Fortunatley most mods like LT's also help to broaden the torque curve as well as simply move it. A good setup for your wants and needs is the answer to all your woes.

Best thing is have a look round the forum and other car sites and see what affect particular mods have and why. The 'why' part is probably the most important aspect as it will allow you to then design a setup that will work for you.

 

That's what I'm thinking also. Mine pulls from start to finish with no hesitation at all.

 

Maybe he is used to a Duramax, lol. Is the SES light on?

 

Same here it pull all the way. Mine has great to end power

 

i mean it has power but not like it has above like 2500 rpm. it dosen't stumble or miss or anything it was just a manner or speaking.

 

thats how all cars are though..what do you expect? there is always trade offs. you could do heads cam that would lower your peak torque(and peak hp) and you'd have power off idle till say 5k rpms(just using that as an example) or you have the stock power band that pulls like a mother ****** from 2500-6000 rpms. I know in my car atleast, off idle in 1st gear will light up the tires..second gear from 1500+ rpms pulls pretty hard...3rd is where you'd have to downshift unless your at a decent rpm.


..hey..you could always swap a turbo deisel in there...lol.

 

throw in a blown 502 and quit complaining...

 

Its just the nature of the beast. I know what you are talking about. That is just the way the LS1's are. They like RPM. It is especially noticable if you are coming from, say, a Stang, or an LT1, or TPI.

 

except those are all way less powerful. a lt1 may peak faster, but even at its peak..it has less power than a ls1.