GoFast908Z

iTrader: (12)

After my last time at the track i decided i need some more converter.

Right now I have a Vig 3000. Here are my 2 choices (time sensitive):

1. Yank SS4000 2.6 STR

2. Yank PT4000 2.2 STR

The PT is $120 more...but the lower STR is good right? Also on Yank's site it says for the PT:
"PRO THRUSTER 4000 4L60E/4L65E LS1
245mm, Stall speed 4000 and 4400, Posi Lock-Up Clutch w/Kevlar Linings, lightweight billet cover, 2.2 STR "

What exactly does that mean, it has two stall speeds? Is it also more beefed up than the SS4000?

I was told to get the converter built for my new motor....thoughts on that?


Ok, now here is the motor thats gonna be sitting in front of my new converter:

L92 block, 4.070 bore, fully machined out and blueprinted
L92 heads from TSP, fully ported and polished
L92 rockers
PRC dual .660 springs
L76 intake
NW 90mm TB
4.1" Compstar Forged Crank
6.125" Compstar Forged Rods
ARP studs
TSP 251/259 on 111 lsa with .661 lift
Custom 1-off Wiseco Forged Pistons.
Performabuilt Level III 4L65E
3.42 gears out back.

dlove

iTrader: (23)

how about circle d

GoFast908Z

iTrader: (12)

i'd prefer to go with a Yank this time around.

Yank

iTrader: (181)

Good choice!
Call me at 775 826 9955
Dave or Mike

cals400ex

iTrader: (27)

what it is saying on the website is that you can get that pt converter in a 4000 or a 4400. i couldn't tell you which one was better. i wish i knew for myself...

Hell'sChariot

iTrader: (24)

pt for the strip and ss for the street/strip. I have a ss4000.

GoFast908Z

iTrader: (12)

why does the PT have a 2.2 str and the SS have a 2.6? Seems backwards to me? Doesn't the higher the STR, the harder and faster the launch?

cals400ex

iTrader: (27)

the ss may very well launch harder from a stop. however, the lower the str, the more efficient it is at high rpms usually. thus, the pt would be better from a roll.

Hell'sChariot

iTrader: (24)

truth! My car is weak from a roll, but will own house from a dig. I can beat a car by 3 lengths from a dig, then I will get beat from a roll by the same car. lol.

cals400ex

iTrader: (27)

what converter do you have in?

i definatly do not want a SS. i am not saying they are bad. but, from most of the dynos i have seen they will be down between 5 and 40 horse with these when compared to a stock stall. this is NOT what i want since i want more from a roll than off the line. but no one has proved to me the pt will be as fast from a roll as the stock converter. i know the shift extensions will be better but i hear so much stuff i don't even know what to believe.

allbaugh_04

iTrader: (6)

You've gotten good advice so far. STR - stall torque ratio. The SS will launch much harder from a stop since it's 2.6. However, the PT has a 2.2 which will launch not quite as hard and it will be more effiecent up top...which should give you better ETs...and it's probably better from a roll.

I hope you called up yank.

GoFast908Z

iTrader: (12)

I haven't called them yet, but I will.

Right now i have a Vig 3000 with a 2.2 STR, and wondering how different a 2.6 would feel. I mean would it fall on its face after 100 mph?

Hell'sChariot

iTrader: (24)

I have an ss4000. And if your a roll racer you probably dont want the ss series you should go with the pt for sure. As for dyno numbers being low...yes they will be low with the ss line. I dynoed 351hp 341 tq with full bolt ons and a tr224 cam. Those are some peoples bolt on numbers. Yet I can walk away from bolt on cars like nothing from a dig. A dyno is just a tuning tool, track numbers are what matter.

cals400ex

iTrader: (27)

i would think you would be able to get a harder launch with a PT converter and still be more effficient. i have been told that the vig's are not that good at high speeds. this is just kind of word of mouth, i have no experience myself.