3.0 to 4.0

[hoffdawg]

Ok, so I have a Frankenstein truck. The body is a 1986, not sure what the frame is, the motor is a 1991-1994. It is a 3.0 and 4 wheel drive. 2" body lift and 4" suspension lift sitting on 33's. I believe the rear end was swapped with a 8.8. I want to swap my 3.0 with a 4.0. I know I will have to have the 4.0 trans, what kind mess am I gonna get into with the wiring, motor mounts, fuel system?

 

[RangerSVT]

Fuel system is the same, motor mounts different. Wiring depends on how the 3.0 was done and what year the 3.0 was. Theoretically, if you get a similar year 4.0 as the 3.0 it should be plug n play.
What would I do? I'd get a 96-97 4.0 with ecu & harness & OBD2 diagnostic port and wire it up...

SVT

 

[RonD]

3.0l has 150 horse power, 190ft/lb torque

1990-2000 4.0l has 160HP, 220 ft/lb torque
So only a 10HP difference

I think money would be better spent on building up the 3.0l or going to a 302(5.0l) V8, at 215HP.
V8 swap would be about the same as 4.0l swap in time and money.
Or even easier if you go with carb and distributor on the V8, so no computer needed