I am trying to get the right torque convertor for my 1978 F150 300 with C6.


Oreily's Website has to that come up for a 78 F150 300 with C6. Which one is right?


1. Pro-King - Torque Converter
Line: PRO | Part # FM127
$74.99 Each



Transmission Code: C6
Non-Lock Up
12 Inch Diameter
31 Splines
1.375 Inch (1.61 Inch Long) Pilot
Milled Flat Hub
4 Stud Mount
11.44 Inch Bolt Circle
Stall: 1600-1800
Ribs Angle 45 Degrees Right
Code: B
Quantity Per Vehicle: 1





2. Pro-King - Torque Converter
Line: PRO | Part # FM128
$74.99 Each




Transmission Code: C6
8 Boss Front
Ribs Angle 45 Degrees Left
Code: 64, 65
Non-Lock Up
12 Inch Diameter
31 Splines
1.375 Inch (1.61 Inch Long) Pilot
Milled Flat Hub
4 Stud Mount
11.44 Inch Bolt Circle
Stall: 1200-1400
Quantity Per Vehicle: 1


Difference seems to be right and left angles of Ribs and Stall.


I do not know where to find "Code". I know I have a C6 Because of my VIN "X" I am told is for C6.




Thanks for any help.

 

BLUF: Both would work but I would prefer the second (Stall:1200-1400)

Stall is the RPM level in which the torque converter reaches hydraulic lock and in layman terms spins the tires even with the brakes applied. The torque converter will still propel the truck at lower RPMs but the brake will hold it back. Lower stall speeds are preferred for high torque low RPM engines like ours. On the other hand Drag racers want a high stall converter to match the HP powerband of there engine since they will redline at 7-10000 RPM, our old Ford engines with general Mods redline at 4-5000 RPM.