Well i had my car dynoed and my car made its max power at 6250 RPMS... I also made max torque around 5000-5800 RPMs..

I currently have a Vig3200 in it and have the 9" with 3.70 gears in it..

my question is.. should i put a higher stall in so when i shift it drops me more in the 5000 RPM range where i make my max torque and so it pushes its way towards the 6250 max power?

What kind of converter do you recommend if i change it? what size stall? Yank 4000? Vig 4000? or should i go higher or lower? MY CAR IS A DAILY DRIVER! I don't want to kill gas mileage too bad.. and don't want TOO loose of a converter.. But i plan on a built 4L60E soon and a CM Driveshaft!

anyone have any idea what kind of gains i might see from a swap?

OR... just keep the vig... its streetable and very easy on the trans and everything else?

THANKS to anyone who can help me out!!

 

ttt? anybody?

 

???? i think i decided... SS4000 or PT4000... any comments?

 

i believe either one of those stalls would be fine... you want your shift extension to be anywhere between 5000-5300 with where you're making your power. my 3800 stall's "extension" is about 5000. I'm not sure if the Vig 4000 stalls higher as the 3200 does, but someone will correct me if something sounds wrong with what I said

is your car tuned and have a raised rev limiter, and peak is at 6350?
I'd look to the SS4000. should have great street manners and give you the results you're looking for

 

You think maybe the 3800 would be a high enough stall for me? or do you think with my 9" and everything that a 4000 would be perfect?

 

i also notice the PT4000 has a 2.2 STR and the SS4000 has a 2.6... Will i ever get that SS to hook on the street with say.. ET streets or street drags? or would it be nearly impossible on the street without slicks?

 

with that cam and the power you're making I'd look at the PT4000. The lower STR would be a good compromise with that 3.70 rear. either way you cant go wrong with either. Anyone know which converter of the two would have the higher efficiency? the lower (2.2) stall torque of the two?

 

Mines has an STR of 2.55, with Nittos I can hook with little spin at 3000 rpm. If I just floor it, she flashes to 4000 RPM and I'll spin the nittos for about a half second then she grabs and goes. Hope that helps ya some.

 

i hear a lot of good things about the SS4000 and how they are supposed to be bad as hell.. but i am also thinking the STR is a little high for the SS4000 and i am not sure if it would be smarter to have that and HOPE to hook up or just go with the PT4000 and hook better? But the SS4000 is supposed to be more streetable than the PT.. so i'm lost.. i'll prob take either or.. I think the SS4000 is cheaper though! haha

 

Just get the SS4000 and some good drag radials and you're all set.

 

If you are serious about moving up in converters, the big gain will be switching to a YTP 4200. It will be looser and cost you 1 - 2 mpg over your Vig 3200. I'm not sure the gain of switching to SS4000 will justify the net investment of $400+ dollars.

Was your converter locked when you dynoed? I don't believe that peak tq with your listed mods was near 5800.

Also your vig 3200 should be holding your rpms at 5000 or higher now. Are shifting around 6600 rpm?

 

i have a vig 3600 for sale if ya want it let me know

 

My car was on a mustang dyno.. and i am looking at my graph right now and i made my max torque at 5000.. and it held till 5800 and dropped off pretty fast.. and at about 5900 my HP went past my torqye and later peaked at 6250 for max power.. My Vig doesn't hold the Rpm's to 5000.. it holds them to around 4500.. and at 4500 my power and torque are pretty down..

But you think the YTP4200 would be better? What is the YTP? never seen that one on Yank.. Or is that the Yank Pro Thruster? The YPT? or is there a difference? Let me know! I want my car to be very streetable though! Thanks

 

If your Vig is only holding 4500, it sounds smaller than a 3200.

The Yank Thruster Pro or Pro Thruster is what I'm talking about. Streetability is in the eye of the beholder, but if you have a 9" with a locker, you have a fairly high tolerance for lack of streetability. With a YTP 4200 you'll be using 2500 - 2700 rpm when you take off if traffic is moving briskly. If you can live with that, it is streetable. I did it for more than a year before I got tired of it, primarily as a result of an exhaust change that made the car louder.

You're one of the few A4s that run a 9". Are you planning to spray? the SS4000 will handle a mild amount of spray and it is not as loose as a YTP 4200.

 

Yea i went with a 9" because i never anted to worry about it breaking and i found a good deal on it.. but my car is extremely streetable right now.. i drive it every single day.. take it from Michigan to South Carolina every year.. The 9" didn't effect the driveability much.. I may spray in the future.. its hard to say.. not sure if i wanna do that.. But i heard the SS4000 is very streetable and the PT4000 is a little mroe loose.. i don't know if i'd want to go for a 4200.. that seems like its pushing towards a non daily driver more.. i'm just completely confused about which stall to buy haha

Keep the info coming though man! Youre helpin me quite a bit! Thanks

 

Pt 4000