Torque Converter?
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Torque Converter?
I will be putting in a refreshed 390 (bored .030 over) back into my truck that will be pushing out about 60-100 ft-lb of torque more than stock. I will be rebuilding my C6 3spd transmission with a TCI Maximizer Kit for trucks. I don't plan on taking it to the track just using it as a truck and the occasional bout of irresponsibility...
The donor transmission I picked up was from the same year model truck as mine (1972), and it had the original Ford Torque Converter in it. I need to replace the torque converter, but I don't want to break the bank. Would a little bit better than stock Powerking Torque converter do the job?
The donor transmission I picked up was from the same year model truck as mine (1972), and it had the original Ford Torque Converter in it. I need to replace the torque converter, but I don't want to break the bank. Would a little bit better than stock Powerking Torque converter do the job?
Hotshot
Joined: Mar 2013
Posts: 14,255
Likes: 199
From: Phoenix, Az.
The important part is having the "stall" of the convertor "come in" the same time as your camshaft does. If they don't then they will fight each other. If the convertor comes in first the drivetrain will strain the low RPM engine and it will feel slugish. If the cam does the tranny will slip taking off. I suggest you contact the tech line of whichever convertor brand you choose and have them tell you which stall to purchase. I believe they will want to know application,camshaft profile,cubic inches,horsepower,torque,and vehicle weight.
"Manufacturers design Torque Converters with different stall speeds to achieve specific vehicle drivability characteristics. The term stall speed refers to the engine RPM at which the torque converter begins to transfer the power of the engine through to the transmission. The vehicle will therefore function differently if a Torque Converter with a different stall speed is installed. With a lower stall speed the engine would engage with the transmission sooner, with a higher stall speed the engine would engage with the transmission later".
"Manufacturers design Torque Converters with different stall speeds to achieve specific vehicle drivability characteristics. The term stall speed refers to the engine RPM at which the torque converter begins to transfer the power of the engine through to the transmission. The vehicle will therefore function differently if a Torque Converter with a different stall speed is installed. With a lower stall speed the engine would engage with the transmission sooner, with a higher stall speed the engine would engage with the transmission later".
Last edited by JEFFFAFA; Sep 28, 2013 at 01:23 PM. Reason: addition
Hotshot
Joined: Mar 2013
Posts: 14,255
Likes: 199
From: Phoenix, Az.
You're welcome. BTW, I forgot to mention that the stall ratings given by suppliers is based off a 350 ci engine size used as an industry standard. Another reason to let them tell you!
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