99-04 3.8 Fan/Rad with 02 4.6 Motor

[[BlackDiamond]]

Hi All,

I'm posting here in hopes someone with the same situation can chime in.

I am doing a swap from my 3.8 to a 4.6. I've heard that I can keep the stock 3.8 RAD and FAN even though the 4.6 RAD/FAN are different.

I can see that the coolant pipes are in the same position and sizes as the GT rad, however, I am not sure if the 3.8 fan would be capable of taking care of the heat generated by the 4.6.

I heard that the 3.8 fan is basically the same as the 4.6 fan, is this true? Do they both have 2-speed?

Anyone who's done a swap can give me a definite answer?

The reason I ask is because the donor vehicle I found does not have a useable Rad and Fan.

Let me know your thoughts.
BD

 

[RandyStinchcomb]

fan and rad are different, V8 fan moves more air and the V8 rad holds more fluid. if you dont get the V8 stuff, you'll run the risk of overheating the engine and Modulars do not like tobe overheated

 

[hotmustang331]

^+1 listen to the man....he deals with this stuff all the time. He works for Liberty Ford (parts) and has ALOT of knowledge...very respected member.

Since your getting a new fan and radiator, and depending on your future HP plans, you may want to just go straight for a fluidine or equivilent aftermarket radiator along with GT fans....that should cool just about any amount of HP you can make.