C6 Torque Converter Suggestions?
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Joined: Aug 2020
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C6 Torque Converter Suggestions?
I'm currently rebuilding the 390 FE out of my Grandfathers old F-250. I'd like to throw a new torque converter on the C6 help aid putting the power to the ground. All the parts I've been going for are aimed towards mid range power. Trying to make this truck a healthy streetable weekend driver. As far as "power parts" go the 390 will be sporting a complete rebuild, bored .030" over, balanced internals, Edelbrock performer RPM intake (7105) and heads (60065), Howard's hydraulic roller cam 278/272 (250705-10), Doug Thorley long tube headers, 2.5" dual exhaust with X-Pipe, and probably topped off with a Holley/Quick Fuel 750CFM Carb (still hunting for the right carb). The trans is a stock (for now) low milage C6 and a Dana 60 rear end with 3.73 gears. The two torque converters I've been looking at are made by Hughes Performance (1.850" Crank Pilot & 11.5" bolt circle) from their Street Master line one being a 2,000 RPM stall and the other a 2,500 RPM stall. If you have any recommendations, experience, or thoughts I'd love to hear them!
Tuned
Joined: Oct 2014
Posts: 406
Likes: 2
From: Tucson Arizona
A 390CID engine running at 6000Rpm and with a VE of .8, (which is pretty good for an FE), you're only pulling about 545CFM. With a 750 your throttle foot is gonna get tired of trying to maintain a certain opening/speed.
An 1850 Holley is more than sufficient for your engine.
Your stock TC will work fine with that cam. If I remember correctly a 2500RPM stall will not lockup in your typical driving range and, therefore, it will decrease your MPG.
An 1850 Holley is more than sufficient for your engine.
Your stock TC will work fine with that cam. If I remember correctly a 2500RPM stall will not lockup in your typical driving range and, therefore, it will decrease your MPG.
Last edited by Millam; Aug 3, 2020 at 05:13 PM. Reason: Typo
Cargo Master
Joined: Sep 2007
Posts: 2,470
Likes: 535
From: Chandler, AZ
Stock stall or first step up. No need for your application, IMHO.
I installed a altered stock type TC in my truck that is +300 rpm (1900-2100) to help getting a big 4x4 on 40" rubber rolling from a stop.
For a warm street motor suggest a shift kit for trans and leave converter alone. Spend on traction.
I installed a altered stock type TC in my truck that is +300 rpm (1900-2100) to help getting a big 4x4 on 40" rubber rolling from a stop.
For a warm street motor suggest a shift kit for trans and leave converter alone. Spend on traction.
Lead Driver
Joined: Jul 2011
Posts: 8,679
Likes: 191
From: On the Edge of the Desert
Originally Posted by Millam
A 390CID engine running at 6000Rpm and with a VE of .8, (which is pretty good for an FE), you're only pulling about 545CFM. With a 750 your throttle foot is gonna get tired of trying to maintain a certain opening/speed.
An 1850 Holley is more than sufficient for your engine.
Your stock TC will work fine with that cam. If I remember correctly a 2500RPM stall will not lockup in your typical driving range and, therefore, it will decrease your MPG.
An 1850 Holley is more than sufficient for your engine.
Your stock TC will work fine with that cam. If I remember correctly a 2500RPM stall will not lockup in your typical driving range and, therefore, it will decrease your MPG.
A C6 converter never locks up anyway, so....
A stock converter will stall at 2,000-2,400. No need to go looser than that. You'll just spin the tires anyway when you put the pedal down.
Cargo Master
Joined: Oct 2011
Posts: 2,249
Likes: 303
From: Kenner,La.
C6 ?
If you really want some out the hole power have a wide ratio planetary gear set added to the C6. Any good transmission shop can get you one and along with a shift kit plus the 3.73 differential that you already have will make a nice street killer.
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