If we have TQ whith 3000 rpm stall what is the final slipage at

top end ?

 

It depends on a number of things like converter size, how the high stall was achieved internally in the TC, engine torque curve, etc.

FWIW, Using a generic simulation program, with a 350 hp LS1 engine and a 3000 actual stall, I got 400 rpm slip at 6000 rpm shift. That might be close.

 

It depends on the converter. A higher stall converter may not be that much less efficient than a "tighter" converter. High rpm efficiency is one reason to prefer one brand of converter over another. The problem is that there are no reliable, independent tests or standards to use. So how do you choose? I do know that on the dyno you can see quite large amounts of hp loss even in a converter that works at the track. It probably makes more sense to talk about hp loss than rpm loss though. Though they should be roughly related. 5% hp loss would be typical.

Rich Krause

 

Thanks for the reply.

i intend to use stall converter because i am building a turbo LT1.