Torque Converter requirements

[BaldMenace]

Engine is a stroked 3.8 with lightly ported heads, hydraulic roller (210/114) and cruz T4 headers. Garrett G37-900 Turbo and a well built Buick switch pitch 400 transmission. Car is a 3400 lb 66 Special with a 3.42 rear gear. How much stall do I need to keep this combination from being lazy ? Current converter is 2200-2300 in high stall mode.

 

[BaldMenace]

This is the Turbocharger I have.

 

[TType85]

I would contact Dusty Bradford at PTC to spec out a converter. I have one of his 17-blade converters and it is great.

 

[HalfDozIN]

the switch pitch could be sweet if someone can build a good converter for it that couples well. Could it survive a 'range' shift while wide open?

 

[BaldMenace]

the switch pitch could be sweet if someone can build a good converter for it that couples well. Could it survive a 'range' shift while wide open?

They seem to do well behind the 500 to 600 horsepower 455 engines.

 

[ITSAV6]

Does anyone build those converters anymore? Probably a 3200/2600 would work better. But a non switch pitch and a non lock PTC would be light years ahead

 

[TexasT]

Phoenix Transmission Products

Performance Transmission Products

www.phoenixtrans.com

You might give Greg a call and see what he can do for you on the switch pitch. I haven't gotten a switch pitch from them but have been doing business with them for over thirty yrs and know guys who have their switch pitch stuff and it works well.