i put in a 400 hp motor,did away with the computer and i am wondering if anyone has bought one of these and if you did does the 4th gear lock up like it should,also i have to change my converter and want to keep the rpms down should i get one of the lowest stalls.i have 29 inch tires and will be putting in 373 gears have a comp cam 268xe cam

 

i am putting in 373 gears and i have 29 inch tires i am going to buy a raptor level 2 now i need to no which stall to get. i have the biggest cam without using a aftermarket converter.right now i have 273s and with those tall tires it doesnt hit the rpms quick enough but i am sure that problem will be solved when i change the gears.i want it to drive like it did from the factory and not have alot of rpms.i wish i had a better understanding of converters any help

 

B&M (and probably others) makes a lock up control unit to work with your setup. From what I remember all you have to hook up to is a power source and the brake switch (so it unlocks when you hit the brakes). The other wires hook to the trans and control unit.

To keep the RPMs down use a lock up converter. Lock up converters have a clutch plate inside them that locks them up and removes the slip. If you don't, it will slip up to around the converter stall speed until you are over the stall speed.

I would look for a lock up converter in the 2500-3000 RPM range.