Off The Line Power

[HWYSTR74]

what do i have to do to my car to get "quick starts" off line? ive driven an 04 SVT Cobra and that was pretty fast but I just dont get the same kick off the line as i do when I drive my dad's 02 Camaro SS (LS1, 360hp) any suggestions?? Price range within reason i mean dont tell me swap my motor. lol thanks guys

 

[eleanor'03]

off the line power? I would say tires and know how to launch. Having a good launch is better than 50 extra hp. After that you can go with gears. Then you gotta learn how to launch with gears. THat should take you a while before you get another mod.

 

[Kilgore Trout]

What kind of car do you have?

 

[ponysarepretty]

TC? Gears? Supercharger?

 

[wanta5.0]

What kind of car do you have?

I call BS. He doesn't have one. Nor does his dad have an 02 SS. If he had ever drove an LS1 he would know they don't feel fast off the line. They feel fast in the upper RPMs and they really seem to pull hard at about 60-70 mph. I assure you an 03 cobra will feel faster than an LS1 off the line.

 

[03ghoststang]

the cobra with the blower will pull alot harder in the low rpms than the SS could

 

[ponysarepretty]

The LT1 pulled hard from the line, the LS1 pulled hard in the upper range... but they all pull hard compared to the 2v...

 

[03ghoststang]

here are some dyno graphs

here is the SS dyno
View attachment 495322

and here is the one for the Cobra
View attachment 495323

so there is a huge differnce in TQ curves

but non the less they do pull harder than our GT's

 

[CanadaStang]

What kind of car do you have?

I checked his previous posts and in one of them he says he has an 01' GT 5spd.
For more kick off the line, go with 4.10's

 

[joshheat25]

Gears For more Kick off the line!

 

[poorcollegekid]

here are some dyno graphs

here is the SS dyno
View attachment 495303

and here is the one for the Cobra
View attachment 495304

so there is a huge differnce in TQ curves

but non the less they do pull harder than our GT's

yes...true...but also remember the IRS isnt as efficient as a straight axle. which really gives the fbod the advantage...but once theyre running...the LS1's ass SHOULD be grass to an 03 cobra. The LT1 will feel faster than an LS1 off the line...and by off the line i mean up to 30mph then the LS1 will have it. running through 1st gear in an LS1 is pretty wicked. but to the thread starter...gears...tires...suspension....thats what you need.

 

[tomustang]

launch at a lower RPM

 

[03ghoststang]

yes...true...but also remember the IRS isnt as efficient as a straight axle. which really gives the fbod the advantage...but once theyre running...the LS1's ass SHOULD be grass to an 03 cobra. The LT1 will feel faster than an LS1 off the line...and by off the line i mean up to 30mph then the LS1 will have it. running through 1st gear in an LS1 is pretty wicked. but to the thread starter...gears...tires...suspension....thats what you need.

true but if you launch the cobra at a lower rpm man that thing is a missile out of the hole, but i see what you are saying and yeah to the thread starter gears, suspension, DR's are the way to go

 

[ThreeWhiteGT]

Steeper gears will give you a quicker start off the line.
Your Dad's LS1 Camaro will still launch better & faster though.

 

[300bhp/ton]

what do i have to do to my car to get "quick starts" off line? ive driven an 04 SVT Cobra and that was pretty fast but I just dont get the same kick off the line as i do when I drive my dad's 02 Camaro SS (LS1, 360hp) any suggestions?? Price range within reason i mean dont tell me swap my motor. lol thanks guys

I think there are two sides to this. One is how FAST the car actually leaves the line and the other is HOW it deploys the power.

The main difference is OHC to OHV. Push rod engines usually produce a lot of low down grunt. The 2v SOHC unit is much more of a rever and makes it's power higher in the rpms.

The Cobra has an advantage of a positive displacement blower which will make lots of power down low also. But many have trouble launching with the IRS so the sensation may well be different.

I call BS. He doesn't have one. Nor does his dad have an 02 SS. If he had ever drove an LS1 he would know they don't feel fast off the line.

Why do you say this?

They feel fast in the upper RPMs and they really seem to pull hard at about 60-70 mph.

But even in an auto by 60mph you will have gone thru 1st gear, in a M6 probably 2 gears. The engine will perform the same in each gear. 4000rpm in 1st gear the engine will be producing the SAME torque and bhp as 4000rpm in 4rd.

I assure you an 03 cobra will feel faster than an LS1 off the line.

undoutably, but 0-60mph times are probably pretty similar (manual gearbox). And how fast doesn't always accurately represent the sensation.

The LT1 pulled hard from the line, the LS1 pulled hard in the upper range... but they all pull hard compared to the 2v...

Funnily enough this is a debate thats been on going on one of the LS1 forums.
LT1 vs LS1

In fact the LS1 produces 90% of it's torque by a mear 1500rpm. And at 2500rpm it is producing ~340lb ft. The LT1 only has a PEAK of 325lb ft which is at 2500rpm.

People tend to think that because the LS1's PEAK torque is at 4400rpm it has no low end. When in fact it is considerably stronger down low than it's predecssor. and keeps pulling almost to the red line.

The only way to get the same torque from a 2v 4.6 is with a postive displacemtn blower. Although the new 3v unit does a very good job STOCK.

To offset the way the power is delivered you can alter other parts of the car, such as final drive ratio and sticky tyres. This will all imporve the sensation (and make it quicker too) but they won't however affect 'how' the power is delivered.

 

[03ghoststang]

a KB will take care of that

 

[trailblazr81]

Either go 4.10's with some big meats in back, or Blow it with some 3.73's, and bigger meats in back. But then you'll have to do some suspension mods, and might want to upgrade the brakes to go with the mo power n speed.

 

[poorcollegekid]

I think there are two sides to this. One is how FAST the car actually leaves the line and the other is HOW it deploys the power.

The main difference is OHC to OHV. Push rod engines usually produce a lot of low down grunt. The 2v SOHC unit is much more of a rever and makes it's power higher in the rpms.

The Cobra has an advantage of a positive displacement blower which will make lots of power down low also. But many have trouble launching with the IRS so the sensation may well be different.


Why do you say this?


But even in an auto by 60mph you will have gone thru 1st gear, in a M6 probably 2 gears. The engine will perform the same in each gear. 4000rpm in 1st gear the engine will be producing the SAME torque and bhp as 4000rpm in 4rd.


undoutably, but 0-60mph times are probably pretty similar (manual gearbox). And how fast doesn't always accurately represent the sensation.


Funnily enough this is a debate thats been on going on one of the LS1 forums.
LT1 vs LS1

In fact the LS1 produces 90% of it's torque by a mear 1500rpm. And at 2500rpm it is producing ~340lb ft. The LT1 only has a PEAK of 325lb ft which is at 2500rpm.

People tend to think that because the LS1's PEAK torque is at 4400rpm it has no low end. When in fact it is considerably stronger down low than it's predecssor. and keeps pulling almost to the red line.

The only way to get the same torque from a 2v 4.6 is with a postive displacemtn blower. Although the new 3v unit does a very good job STOCK.

To offset the way the power is delivered you can alter other parts of the car, such as final drive ratio and sticky tyres. This will all imporve the sensation (and make it quicker too) but they won't however affect 'how' the power is delivered.

well put...too bad people think that by SOTP power...they can accurately gauge a car. the LT1...people think is more powerful cuz its got that low end grunt then stops...but really the LS1 never stops "grunting" until about 5600. i wish people would actually look at dynographs and quarter mile times rather than trying to brag about a car that "snaps your neck back" so it must be fast. Thread starter...are ya getting any ideas or do you want us to elaborate on the parts needed a little more?

 

[thomas91169]

learn how to drive?

 

[CanadaStang]

I think there are two sides to this. One is how FAST the car actually leaves the line and the other is HOW it deploys the power.

The main difference is OHC to OHV. Push rod engines usually produce a lot of low down grunt. The 2v SOHC unit is much more of a rever and makes it's power higher in the rpms.

The Cobra has an advantage of a positive displacement blower which will make lots of power down low also. But many have trouble launching with the IRS so the sensation may well be different.


Why do you say this?


But even in an auto by 60mph you will have gone thru 1st gear, in a M6 probably 2 gears. The engine will perform the same in each gear. 4000rpm in 1st gear the engine will be producing the SAME torque and bhp as 4000rpm in 4rd.


undoutably, but 0-60mph times are probably pretty similar (manual gearbox). And how fast doesn't always accurately represent the sensation.


Funnily enough this is a debate thats been on going on one of the LS1 forums.
LT1 vs LS1

In fact the LS1 produces 90% of it's torque by a mear 1500rpm. And at 2500rpm it is producing ~340lb ft. The LT1 only has a PEAK of 325lb ft which is at 2500rpm.

People tend to think that because the LS1's PEAK torque is at 4400rpm it has no low end. When in fact it is considerably stronger down low than it's predecssor. and keeps pulling almost to the red line.

The only way to get the same torque from a 2v 4.6 is with a postive displacemtn blower. Although the new 3v unit does a very good job STOCK.

To offset the way the power is delivered you can alter other parts of the car, such as final drive ratio and sticky tyres. This will all imporve the sensation (and make it quicker too) but they won't however affect 'how' the power is delivered.

Yeah, I've noticed a few people on here saying that the LT1's will pull the LS1's off the line, I really didn't feel like getting into a big debate about it so I never bothered correcting them. Having owned [and currently own] and raced many LT1's and LS1's, I can say yes, you are correct.