01WS6A4

I should be in the 11's. I have not made that many runs but here are the 2 best so far. I have since then got a new tune and deleted torque mgmt,deleted abuse mode,and deleted power enrichment delay,and changed the shift rpm and shift mph changed.Also shift points are at 6500. Will these changes get me in the high 11's. next time out,still on the stock tranny. Car mods below. I'm pretty close right now but really think I should be in the 11's

60ft-1.79
330ft-5.0
ET@595ft 7.32
1/8et -7.8
1/8mph -90.02
1/4et -12.22
1/4mph -111.95


60ft-1.81
330ft-5.1
ET@594ft-7.36
1/8et-7.86
1/8mph-89.63
1/4et-12.27
1/4mph-111.10

BAIN

iTrader: (5)

I can't see why you aren't in the 11's yet with your setup. What is your raceweight? With the 1.8 60's that your pulling....I would have to say part of your problem is your converter.

SEB

iTrader: (12)

As the last guy said. You want to get in the 11s. Get a Yank PT4000. They pull extremelly hard on the top end & have decent street manners. Also get a underdrive pulley & Elec water pump. I had a Yank PT4400 in my cam only car & was running 7.50s & then added the pully & Elec Water pump & was running consistant 7.20s@ 93mph

Pro Stock John

iTrader: (34)

60 ft's suck, either you are spinning or the car doesn't leave hard. If it doesn't leave hard either the converter is crap, or you need to figure out how to launch it. Some 4L60E converters like to be launched a little above idle, some like the old Yanks like you to foot stall it as high as you can. I typically experiment, if I drive someone else's car. I will try off idle, then 1200, 1500, 2000 and up until I can't hold the car at the light.

Check also where your car is really shifting, it might shifting lower than you think. Your mph should be more like 114+ but if it's shifting at 6000 or something then you would run times like that.

SunsetOrangeZ

iTrader: (10)

With the 111 mph, you will pretty much have to cut the time out with a lower 60'. If you can 60' 1.5 or 1.6 you may be able to pull out a 12.00 or 11.90. Sure fire way would be to change the coverter.

I am no expert but your MPH seems very low. I agree with PSJ, play with the launch technique. I would look at the tune, but the changes you made with shift points might help.

When my car was LT's, ORY, Catback, lid, 3.73, and tune, it ran consistently dead nuts 12.50 @ 112. ( A4, full weight spare and all)

So your cam only should definatetly MPH 114+. FWIW

Dragkid1917

iTrader: (2)

Yhea your cam only car should trap a bit higher, mine trapped almost 119 with stock pulley, stock throttle body, and stock ls1 intake. However I was racing in some seriously great weather, probably over a thousand feet under sea level. The 60 foot is definatly part of your problem for sure. But if you could list, what is your
-Tire combo
-Raceweight
-Dence alt when racing
-RPM you launch at
-Dyno numbers

With those Im sure people here could easily give you more accurate tips on how to to drop your ET's

01WS6A4

I spin like crazy. With those runs I might have had to much air in the rear tires. Tires are MT street radial 275 40 17 ,stock up front. Race weight I do not know only thing I did to reduce weight is remove the spare tire and jack and I'm only 157lbs.. It pulls very hard off line. On a Mustang dyno I was at 393 rwhp and 352 tq. I know I need to practice my launching and I do spin. I will try just taking off at idle and move up from their. Thanks for the info. I will take all the advice I can get.

BAIN

iTrader: (5)

Yea there is something more than the 60' going on there. With 400 rwhp you should be pulling higher MPH. The spinning may cause a loss of some MPH also. Do they not prep the track well?

TeEnAgE pHeNoM

iTrader: (6)

You should pick up around 25 mph between 1/8 and 1/4. Your 1/8 trap is decent @90 for the mods and being pretty much full weight. Your only picking up 20-21 mph so I would look @ the torque converter possibly slipping too much and that may also be what is affecting your 60 ft. times. They should be in the mid to high 1.6's with your setup and traction. You really should be trapping 115 - 120 with your stock ported heads and cam if everthing is working right.

Silverado_13

iTrader: (5)

MPH's too low and 60 foot is ****. I trap 115 and run 11.8s. 1.68 60 foot.

01WS6A4

Its probably a combo of converter and 60 ft. I bought the car with most of the mods done already. It had a pt4000 in it and it was wicked.but it was no fun on the street. I was not use to a stalled auto and should have kept it in their. I changed it to the 3400 midwest for better street maners. I never took it to the track with the pt4000. So if I want the 11's I would probably have to move back to the pt4000. Now I know at least. If I get a new tranny it will have a bigger converter.

TeEnAgE pHeNoM

iTrader: (6)

That stall speed is pretty close to what you need for that camshaft. The thing is though is it flashing high enough when you leave to get a decent 60 ft. Did you have that converter built for your combo. Even with a converter that is on the mild side like you have for streetablilty it should 60 ft mid to high 1.6's. If it is rated to 3400 it should probably be flashing 400-600 rpm higher.I would probably look at the tune, converter and maybe valve springs. You are missing quite a few mph somewhere, more after the 1/8th though.

N2RACINGLS1's

iTrader: (2)

It is all in the 60 foot as others have said! I will add that the car does appear to have a converter problem. Your car should have more MPH!!!

Let me share this with you. In December 2006 when my car was 3,665 lbs. with the stock 91K mile engine with an LS1 intake and long tube headers only and the valve covers were never taken off ran the following numbers. It had a 3.70 gear and turbo 400 with ATI converter. I shifted at 6,200 RPM's

1.543 60 foot
7.533 1/8 ET
89.14 1/8 MPH
9.919 1000 ft ET
11.944 1/4 ET
111.17 MPH

So if you get you 60 foot down your in the 11's with no problem. I hope this helps!

N2

01WS6A4

Um ok that makes me feel a little better after looking at your old times their. I dont have a lot of seat time in at the track. I'm pretty sure I have an 11 sec car if I can just practice more. If I remember on those passes I had it in overdrive and maybe a little to much tire psi. Say I can get a better 60ft like a 1.65 even and get my mph up to 113-114 is their a way to calculate a rough time. When I changed out the pt4000 the installer recomended the 3400. These guys that did the install for me are pretty diehard ls1 racers. At the time they were running in the 8sec range maybe faster with one of their cars. Ohio boys racing I believe they are called. I appreciate all the input guys ,the more the better.
On another note not that I'm into street racing but last year a buddy of mine with a ls1,M6 camaro wanted to compare mine to his because he just got thru installing a bigger cam and afr heads if i remember right so we did a few runs from 20-30 to 100 and I could not believe I was right beside him everytime and I have an auto. So I dont think I have any real issues with the engine.

N2RACINGLS1's

iTrader: (2)

You did notice that the 11.94 time was done with a 91k mile engine with stock cam, heads, LS1 intake and stock throttle body right?

Your engine maybe fine I am thinking the converter is more of the problem. Good luck!

N2

01WS6A4

I did.Thanks!

TeEnAgE pHeNoM

iTrader: (6)

You need to run your car in 3rd gear through the traps. If it is shifting into overdrive that will kill alot of trapspeed in the 1/4.

01WS6A4

I am thinking about getting a new tranny and a pt4000 stall. Maybe a performabuilt level 2. I hate to go to the cost of installing a new higher stall converter in the stock tranny. Any ideas of a more cost affective set up ? Or would this be the best deal for me. Rossler transmission is in my state,anyone here have a rossler street/strip trans.

ABA383

iTrader: (1)

Rossler originally built my trans back in 1995...It lasted til 2002 before I had it built again by a local shop...It was a good trans...I am going to question the accuracy of your dyno numbers though...I make 375 rwhp on a calibrated Mustang dyno and trap over 121 mph...Dyno numbers, especially on a Mustang are very easy to inflate with a few key strokes of the computer...Seen it done a bunch of times....As long as yout tune is good dont worry about the dyno numbers...I'd look at more stall though and a different converter brand...111-112 mph is usually good for 11.90s if all else is perfect...Getting your 60's down will get you there...

--Alan

--Alan

01WS6A4

Thanks for the reply about the rossler. I do have the dyno sheet that shows the numbers with a stock converter. Maybe I could post it up. I will try. I have looked at other peoples times and it seems like if I would get the 60ft down it would really help. I looked at the midwest website and they do not have a 3400 stall only a 2800-3000 if that is what is in my car then it is definitely not helping. I cant wait to get a pt4000 in this thing. I just dont know what tranny to buy. The PerformaBuilt level 2 is $ 1840 and the Rossler is 1600 and I can pick it up. Is there a way to calculate what my times would be if I did a 1.65 60ft.