3.4 Swap Questions

yotadude520

Mini-Truck Enthusiast
Moderator
Joined
Jul 12, 2013
Messages
1,924
Location
Tucson, Arizona
About to finally get the 3.4 swap underway on our 1990 4Runner and am going to have a buddy of mine pull the old engine for us since he wants to keep it for himself.

What parts do we need from the original engine? So far I've got:

-All accessories & brackets
-Oil pan
-Main wiring harness (have conversion harness from ToyOnly Swaps)
-All exhaust (have crossover from Toy Only Swaps)
-Starter
-All fuel lines

I think that's about all of it right? We've got a new clutch kit so don't really need the flywheel or anything.

Let me know if I'm missing anything.

Thanks!
 
Joined
Aug 2, 2006
Messages
5,266
Location
Jefferson
you need the 3.0 motor mounts.
the 3.4 alternator plug. and starter lead.
if you aren't playing the smog game i recommend that you don't relocate your battery.
you likely will need to update your ps pump. the rack pumps dont tolerate big tires well.
 
Joined
Jul 31, 2007
Messages
568
Location
San Diego North
you also need the oil pressure sending unit from the 3.0. it needs to be swapped with the 3.4 switch if you have an oil pressure gauge.
 
Joined
Jun 25, 2021
Messages
801
Location
Marana, AZ
I used all the 3.4 emissions stuff from the donor but I was going from a 22RE. What fan are you going to use? the 3.4 is a lot bigger than the 3.0. What air box?
 

Users who are viewing this thread

Top Bottom