I have a 1979 mustang. I drive it to the track about 20 mins one way. I am looking to get a good stall convertor. I have a c4 rebuilt to hold 500-550 HP. No transbrake. I want to be able to build boost on the line heres is the combo!! The transmission is a c-4

79 stock short block
performer rpm intake
performer rpm cam
1969 351 heads
gt35 turbo 68 A/R 450-550 hp running 12lbs of boost
stock rockers
c-4
8.8 with a set of 3.31 gears
slicks and skinnies
car has no back seat no bumpers no heater no sound deadening no front sway bar has summit racing seats so the car is light prolly abotu 2500-2800.

 

Hi, looking at the info provided and what your driving plans are, I would recommend a 10" race piece built to stand up to the torque output of your turbo. It should stall approx 34-3600 and being a 10" it should have enough fluid capacity to lock up and load the turbo for consistant boost as well as maintaining a safe operating heat range for your fluid. The 10" will also have terrific street manners if configured correctly. I would also recommend this approx stall because of the fact that it is a stock block and should not see over 6500 rpm, if that high, again your converter builder will need a lot more info on your paricular combo to make sure you get a converter that you are comfortable with and does what you need. Hope this helps you out.

 

His converter builder should be you .

 

lenny is the best, i have 2 converters from him, 1 new for my car and 1 he went through that went in my womans turbo 6 and both work perfect