OHV V6 & 5r55s

[mrvaliant]

Can an OHV V6 and the wide ratio 5R55S 5 speed automatic be made to work together using any combination of stock Ford engine and transmission control units or will I need a stand alone transmission controller?

 

[imp]

Can an OHV V6 and the wide ratio 5R55S 5 speed automatic be made to work together using any combination of stock Ford engine and transmission control units or will I need a stand alone transmission controller?

First question to answer other than yours is: Do OHV and OHC engines share the same converter housing pattern? I don't know that answer, maybe you do already. If the answer is yes, then it seems likely that given both engines have the same displacement, fuel delivery programming (PCM controlled) ought to be close for both. CLOSE, but not the same, as combustion efficiencies of the two engine designs are probably somewhat different.

If the transmission control unit is as specified for the 5R55S, it shouldn't care too much where the HP is coming from, I think. imp

 

[2000StreetRod]

interesting question

What year body are you going to use?

Just a few comments with very little thought:

The 3rd generations came with the SOHC V6 and the 5R55S. The 2nd generations came with the 5R55E and either the SOHC or OHV V6. Because of solenoid differences (and other things) you would have to use a 3rd generation PCM to control the 5R55S/W.

The 2004 and later 3rd gens have electronic throttle control and pulse width modulation control of the fuel pump referencing a pressure sensor on the fuel rail. There was no production OHV V6 with those capabilities so you should limit your consideration to a 2002 or 2003 PCM for simplification. I'd have to check to see if the 2002 and 2003 have the same fuel pressure and injectors as the 1998 and later OHV V6 with a returnless fuel system.

The OHV V6 uses a synchronizer to determine if a cylinder is on the compression or exhaust stroke. The SOHC V6 uses a camshaft position sensor for the same function. The sensors may have different electrical characteristics incompatible with the 3rd generation PCM depending on the year of the OHV V6.

The early V6s had a 6 bolt crankshaft flange but the SOHC V6 has an 8 bolt crankshaft flange.

 

[imp]

2000: Bell housing pattern?

Your comments make sense. A lot of farting around will be needed. imp