A torque converter with a higher than factory stall speed.

 

agreed in that order..
sorry for putting them out of order...
I wasnt thinking straight

 

3/4 and 1 ton GM VAN'S come standard with the 4.8.

 

 

alright, shed some light on this... a torque converter is nothing but a hydrodynamic coupling between your crank and tranny. when both crank and tranny are running the same speed most of our trucks lock the converter to prevent slippage. so how then does do torque converters make 'more' power. i can see it helping launches for the 1/4 mile because you can increase your stall but thats it...

 

You do get torque multip when its slipping

conservation of energy applied over time (power) says
velocity*force(in) - losses = velocity*force(out)

When its slipping, the velocity(rpm) on one side (trans side) is lower so the force (torque) is higher. Think of gears, using velocity (rpm) to make more torque. However, power is still the same.

 

Shouldn't the tune be last after the stall.

 

what kind of gears... rearend? what kind are recomended?? (not meaning to hijack)

 

tune and stall, should really be done at the same time..
especially if you go with a high stall..

 

for a 4.8 rcsb i would deffinately say 4.10's. Maybe on a tahoe a 4.56? THat might be to much gear but that would deff get him rolling good. 4.56 and like a 31" tire shouldnt be bad