14 1le vs 13 track pack 5.0

[Dropspeed]

Hi Norm,

Thank you for the detailed explanation.....One item to note in your chart, it looks like the axle ratio is incorrect for the M6/SS. It should be 3.45, I think the 3.27 is the auto?

-Matt

[Norm Peterson]

Thanks.

Here it is with 3.45's in the SS.


Norm

[HeaterMan]

Originally Posted by bluebeastsrt

You know as well as I do there is more to drag racing then tire diameter per gear. You never mentioned anything about a dyno graph and where the LS3 will make it's power. The longer gear you mention in the SS just means it takes longer to get into the powerband of the engine. While the 1LE will spend more time in the meat of it's power curve. Now on to your side wall explanation. I'm going to ask you one simple question. If you were to buy a tire for drag racing. Would you concentrate more on the side wall or the compound of the tire? You also know as well as I do the compound is more important than sidewall. A drag slick is the most effective drag tire because it gives the best combo of grip via the sticky tire compound and the Krinkle effect of having alot of side wall. BUT alot of people choice a drag radial for the simple reason they can combine have the sticky compound tire for the track and still have a stiff enough tire to drive safely on the road. You can put a sixty series tire that will have a ton of sidewall on any car. But if it has a 350 tread wear rating your traction is going to suck simply because of the hard rubber compound.

I'm LOLing at the money you spent on the mods listed in youir signature to go almost as fast as a bone stock 5.0 mustang auto. just wondering what makes you such an expert on what a 1Le should or can do? oh and 12.70's in my Mustang with less than 500 miles on the odometer and no mods whatsoever.

[HeaterMan]

Originally Posted by bluebeastsrt

I'm LOLing at your 13.36 time you posted in your sig in your 2010 Camaro. By the way I ran those same times stock in this L99 with about 40 less wheel horse power than your LS3! Nice driving speed racer. What do you want a cookie because Ford built a better automatic transmission than Chevy???? YOUR THR MAN!!!! Happy now? But I dont recall anyone asking about your Mustang.

yeah, well i'll bet you didnt run that time bone stock in your L99 when it was 97 degrees out with 80 % humidity mr rockstar. oh and my faster than you mustang is sportin 74 less cubic inches than your L99.

[HeaterMan]

Originally Posted by HeaterMan

I'm LOLing at the money you spent on the mods listed in youir signature to go almost as fast as a bone stock 5.0 mustang auto. just wondering what makes you such an expert on what a 1Le should or can do? oh and 12.70's in my Mustang with less than 500 miles on the odometer and no mods whatsoever.

I will ask you again since you seem to have missed the question the first time you read my response. oh and all my life i have been a GM guy up until I bought a 2011 5.0 mustang, since then i have owned 3 mustang 5.0's and one was a track pack no options 2013 Mustang..so I am fully aware of what they can and can't do. what are you basing your argument off.. magazine articles.. youtube videos? just wondering

[trademaster]

[Norm Peterson]

Originally Posted by bluebeastsrt

You know as well as I do there is more to drag racing then tire diameter per gear. You never mentioned anything about a dyno graph and where the LS3 will make it's power. The longer gear you mention in the SS just means it takes longer to get into the powerband of the engine.

Because at the point where I entered the discussion it was only about the necessity of having to grab 4th in the 1LE. The only thing I was addressing was this point, together with a little information about what's going on during that extra upshift.

Trust me, I am much more familiar with the concept of a dyno torque graph and how to relate it to your car's acceleration at any given instant than you think. Care to take a guess how long?

Getting into the meat of the powerband is mostly a 1st gear matter, and overall the SS/MT and the 1LE have virtually identical 1st gear capabilities - there's only a 1 mph difference between the two all the way out to 7500 rpm. It's right there in the chart in Post #51.

The only wrinkle would be if there was such a huge space between adjacent gears in one transmission but not the other that you'd fall well below the peak torque rpm on upshift. This is not the case here - the average gear ratio spacing in the SS 6-speed is roughly 0.69 to 1 (it's in the charts). So if you're shifting at only 6400 rpm, the next gear would put the engine revs at about 4400 rpm, only 200 rpm below the advertised peak torque rpm. You'd be only a little shy of peak torque, and you would be in the flat part of the curve.

While the 1LE will spend more time in the meat of it's power curve

Agreed. But it obviously isn't enough to overcome the disadvantages the 1LE has been demonstrating with respect to launch bite and the need for that extra upshift. Perhaps Ronnie Sox could make most of the upshift disadvantage go away if he was alive and still in his prime, but that's way out there in the land of "what-if".

Now on to your side wall explanation. I'm going to ask you one simple question. If you were to buy a tire for drag racing. Would you concentrate more on the side wall or the compound of the tire?

Of course you'd pick compound first. I never said you shouldn't. But that's outside the situation here. We're comparing a stock-tired SS/MT against a stock-tired 1LE, and Chevy did not pick a DR or DR-compound tire for either one.

You also know as well as I do the compound is more important than sidewall. A drag slick is the most effective drag tire because it gives the best combo of grip via the sticky tire compound and the Krinkle effect of having alot of side wall.

We are not talking about drag radials here, and certainly not comparing the case where DRs are on one car but not the other. Street tires with at least some performance intent tend to have grip closer to each other than to a drag radial, and when the difference between compounds is small, sidewall height can easily become the one determining factor.

BUT alot of people choice a drag radial for the simple reason they can combine have the sticky compound tire for the track and still have a stiff enough tire to drive safely on the road. You can put a sixty series tire that will have a ton of sidewall on any car. But if it has a 350 tread wear rating your traction is going to suck simply because of the hard rubber compound.

Now you're just trying to distract or muddy the issue again. But FWIW, running DRs on the street is not the hot tip for at least two reasons, neither of which has anything to do with sidewall stiffness.


Norm

[Cody6.2]

Since this has turned into a mash up of gear ratios and such someone should do a chart for the 13/14 GT Track Pack. The MT-82 ratios alone are amazing and even more so with 3.73's behind it. Shifting into 4th in the 1LE during the 1/4 is nothing.

[HeavyIOM]

Originally Posted by Cody6.2

Since this has turned into a mash up of gear ratios and such someone should do a chart for the 13/14 GT Track Pack. The MT-82 ratios alone are amazing and even more so with 3.73's behind it. Shifting into 4th in the 1LE during the 1/4 is nothing.

The 3:73 paired with the MT-82 are pretty sweet. The gears are very short though. I was shifting into 4th right at the traps in the 1/8th with my stock 13

[Norm Peterson]

Originally Posted by Cody6.2

Since this has turned into a mash up of gear ratios and such someone should do a chart for the 13/14 GT Track Pack. The MT-82 ratios alone are amazing and even more so with 3.73's behind it. Shifting into 4th in the 1LE during the 1/4 is nothing.

Ask and you shall receive.

Taking even a half second still matters to the clocks. That dog-leg move to go from 4th to 5th would hurt more.


On edit, the 763 revs/mile for Tire 4 is what's listed for a Mercedes-Benz tire in 255/40-19. The Mustang's 255/40-19 does not give that information, and 763 looks a little low. So I used an average of the other revs/mile. It's no more than 1% (1 mph in 100) off even if 763 is really correct for the Mustang Track Pak tire.


Norm

[Rangore]

I just want to know the results of the OP's challenge.

[ruffryderj]

got rained out

[HeaterMan]

A little hint abnout the track pack cars. if they are 100% bone stock they have serious wheel hop issues. mine did and it was brutal. my camaro did too but not as bad.

[Bad70supreme]

13.36 in a ls3 is just bad driving not the cars problem! 12.7s in a stock auto 5.0 is because the car is doing the work for you! So good job going faster when it takes your driving out of equation.