silent1

iTrader: (3)

Looking for the best of both worlds-streetability and performance
Daily driver with frequent 1/4 mile runs, 5200 lb race weight, 4.10 gears, 29" tires, shifting at 6000 rpms. Looking to get 60fts in the 1.65-1.75 range. Currently running Vig 3200 tripple disc(built for current engine) with a best 60ft of 1.89. With previous Yank TT3000(built for 5.3) had a best 60ft of 1.75. Included a mustang dyno graph to give a better feel of my performance range:

onebadrubi

a 3800 would put you at what appears to be peak torque before it falls off a little bit. And would be makin a few more ponies at 3800 rpms.

With the 3200 are you getting traction? You said built for your current motor and your old one for you 5.3l. Im assuming you have a 6.0 or bigger?

silent1

iTrader: (3)

Traction isn't much of an issue when launching in 4x4. With the TT3000 it launched MUCH harder, torque steer was my biggest problem, and traction was only an issue with poor track prep.

trever1t

iTrader: (14)

The tighter Yank produced a lower 60' on the 5.3 or the new engine?

silent1

iTrader: (3)

On the new engine. I just stated the TT3000 are built for the 5.3 because I know that it stalls higher in my current application.

silent1

iTrader: (3)

What kind of shift extension would I get with a 3800? Are we talking Vig or Yank 3800?

I'm currently trapping at 5500 rpms. I'd like to get it closer to the 5800-6000 rpm range. That would have my trap speed in the ~114mph range.

BigKID

iTrader: (5)

Was the converter locked on that graph? Without a run with the converter locked it is hard to get a good representation of the actual torque the motor is making. Rule of thumb for max performance is to set stall speed 500rpm less than peak torque.

silent1

iTrader: (3)

Yes, converter was locked. So max performance would be a 4000 stall. Anyone know what kind of driveability to expect from a stall that size and 5200 lb truck?

BigKID

iTrader: (5)

It will be very loose! Especially if you go with a 9.5" converter. My first Fuddle HP Truck converter stalled ~3800 in my truck (only 4400lbs) and it was very loose on the street. Too loose for my liking on a DD. The one I have now isn't near as loose but is still looser than what I perfer. For normal acceleration it will stall 2500-3000 rpm.

onebadrubi

I dont see how a TT3000 was looser then the 3200 PI. The tt3000 is supose to be a very tight stall. Much higher and you going to be LOOSE on a DD truck, deff with yours being that heavy, ext cab?