Andrew_t

I just installed a performabuilt stage 1 tranny and 3200 circle d converter and now I see slower.I have 2.73 gears.

With my stock setup I beat a 3v 4.6 mustang by 4 cars on an uphill 1/4 mile. Now with the stall I only beat a 2v 4.6 by half a car on the same uphill 1/4 mile. From a 20 kick.

How is this possible?
Is it my gears or what?

antonio84

Have u tuned it yet, if not than thats ur problem.

01ssreda4

iTrader: (96)

Do you have actual ETs or traps speeds as a solid baseline we can compare to? Sometimes bigger converters do feel a little sluggish on the top end, which is why autos don't typically mph in the 1/4 as well as manuals. Your converter is gonna shine from a dig, if you are wanting to roll race, an M6 might be better suited.

SuperSlow02

iTrader: (16)

Maybe....the 2v is faster then the 3v car. As 01ss said, you need legit numbers to know. It's very unlikely your car slowed down unless something is wrong

projectX

iTrader: (51)

If you don't hear or notice anything wrong I would say it's the tune or lack of having one.

Andrew_t

It's on the stock tune ATM. The 2v car is not faster then the 3v car. And nothing else has changed except for the stall and tranny. Would u suggest a tube over gears? Where should I get I tuned? I live kinda close to blue cat.

Macs98Z

iTrader: (16)

I had a similar experience after installing a new trans and the Circle D 3200. Out of curiosity, was it the 278mm? Unfortunately, I had no base numbers to compare it to, except what I found other's stock A4 numbers. I am on 3.23 gears, bone stock except the trans and stall, and went 13.9 @ 100 and some change with something like a 2.0-2.1 '60 (all this is off the top of my head as I don't have the slip in front of me). There are a few things you have to take into consideration in my case, however. 1) It was my first time to the strip with a car 2) I was on street tires 3) I was on the stock tune
4) Track prep wasn't great

Excuses, excuses

However, with all that being said, I was still disappointed in my times. It was on a cool night and I was thinking it would have been better. Maybe there is something to having it tuned that would make it worlds better, I don't know. The drivability on the stock tune, even when going WOT, is fine, so I have been waiting until my exhaust to have a tune done.

Anyone have anything to point out about mine and Andrew's situation? Is this to be expected, or is there something wrong with our cars?

redtan

iTrader: (5)

How can you possibly compare your performance vs. two different cars? If this was the same exact opponent I can see a problem, but these are two different cars your racing. How do you know that the 2v is not significantly faster than the 3v?

That's like saying: "I used to beat my buddy Doug by 2 seconds in a 100m dash. Then I trained for 3 months and raced Hussein Bolt and lost. WTF, did my training make me slower?"

Unless you raced the same car and got different results, or have actual track times before and after, you cannot say that your car is slower because the race outcome with a completely different car is different.

Andrew_t

Yes it's 278mm. A 2v 4,6 has nvr outran a 3v and it was on the same stretch of road. I've nvr been on the track so I don't have times.

SuperSlow02

iTrader: (16)

Has the 2v ran against the 3v car? Were not trying to be dicks....but your comparasion isn't a great one. Even with stock tunes I've seen the 4l60 cars go a good tick quicker for a converter swap.

Are these mustangs modded or bone stock?

2fresh

iTrader: (20)

i out ran quite a few 3v cars with my old 2v they are heavy

Macs98Z

iTrader: (16)

SuperSlow, are you talking untuned, stalled cars on street tires? If so, I guess I have a problem...

Andrew_t

Yes the 2v and 3v have raced and the 3v is faster. The reason I used them as a comparison is because i know both the cars very well and both r stock.

01ssreda4

iTrader: (96)

Until you have a 60ft, trap, and ET, its gonna be hard for us to help you. You could have a trans on the way out as well.

SuperSlow02

iTrader: (16)

yes...stock tune would mean untuned. ive had a few buddies pick up a few tenths on street tires. but thats driver skill too, you cant put it at 3k on the foot brake let er eat either. a GOOD converter will net you more MPH too. I went from a 3500 converter to a 5k FTI converter and picked up 1.5mph. Its all in the overall set up.

OP. as 01redssa4 said, we really need numbers. You said fresh trans and converter, so i wouldnt say thats the problem. that really only leaves your tune....but for it to drop you that much....

Gilbert@Ace Racing

Without firm data there is no way anyone here can make a determination as to what is going on. There are simply too many variables and too much room for error in the information you've given us.

Now, if you can provide time slips and related information then we can start with that. Anyone who would make recommendations to you other than having your tune looked at is not helping you at all. Don't judge the combination without listening to the professionals who are trying to help... get the data and we can go from there.

g

Andrew_t

Well I don't live near a track so I guess I'm just not gonna get any help here.

ss454327

iTrader: (10)

How did you launch with the new setup? I see too many people try to stall it up as high as they can go and think that's the best way. For most people going off idle gives the biggest flash to the converter and results in the best 60' time. I have the same converter in my AWD Silverado SS and I can tell you it's a solid performer. With just ARH headers, HD2 shift kit, AEM CAI and a street tune I've ran a best of 13.82 in the 1/4and just for a Mustang reference I was dialing in the same as an '06 GT with CAI and full exhaust with X pipe...

Andrew_t

Well I went from a 20 kick. But I havnt played around with launching it yet ima mess around with it this weekend

thunderstruck507

iTrader: (18)

Is the trans slipping? Check the fluid level and make sure it's not already smelling burned.