Complete Toyota 3.4 Swap Tutorial: Everything You Need to Know

Join us in this exciting engine swap project as we replace the old, unreliable 3.0 3VZ with a powerful and ultra-reliable 3.4 5VZ. In this video, we cover everything you need to know to swap out the motor on a Toyota 4Runner or Pickup, including all the wiring and additional components required for the upgrade. Follow along as we take you through the entire process, from start to finish, and show you how to make your rig more powerful, reliable, and ready for off-road adventure!

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- 1UZ-FE V8 Swap
- Manual Swap
- Dual Transfer Cases 2.23 x 4.7
- Solid Axle Swap / SAS
- Lunchbox Rear, E-Locker Front
- OME Rear Springs & Tundra shackles
- 37x12.5r17 Toyo MT Tires

Camera Gear Used To Make This Video:

[matthieucorbeilwalsh]

Curently in the middle of a 3.4 swap in my '90 4runner. So glad you guys are documenting this swap more than before.

[Davest]

I just had my 91 Toyota pick up shipped out from Colorado to New Hampshire. I was going to just replace the 3.0 but I’m definitely going for the 3.4 now. I’m gonna watch all your videos on it and hopefully get er done

[petermorton]

Good on yous replacing the old engine to drop in the FAMOUS TOYOTA 3.4V6 5VZFE ENGINE & they are a Brilliant Engine & I have a 1996 Toyota Hilux Surf 3.4V6 5VZFE Engine & it has done 265, 000 Kilometers & my son Regan brought the 1996 Toyota Hilux Surf 3.4V6 5VZFE Engine when it had done 117, 000 Kilometers & when it had done around a 119, 000 Kilometers I replaced the Spark Plugs with the HGK Iridium Spark Plugs & it's the best that I could have done & & when my son Regan Sold to me when it had done roughly around 125, 000 Kilometers & I had kept up with the service & do the oil & filter changers & when it had got around 140, 000 Kilometers & decided to check the NGK Iridium Spark Plugs & when I got the Spark Plugs out I wiped them with a clean rag & they looked really good these NGK Iridium Spark Plugs & I just screwed them back & just nipped them up tight & I never ever torque these down & you don't need to tighten tighten these plugs too tight as I just nip up tight & when the Toyota Hilux Surf 3.4V6 5VZFE Engine had done roughly around 185, 000 Kilometers I took the HGK Iridium Spark Plugs out & check them again I just gave the a wipe with a clean rag & they looked fine & this time I put some PBC Copper Coat Grease on the threads of the Spark Plugs & at roughly the same time I did the Timing Cambelt, water pump, Tensioner & Idler pulley & I had to buy a new crankshaft pulley as the other was rust around the crankshaft itself & even though I was using a puller it actually broke the crankshaft pulley & I a terrible way way of getting the pulley off & in the end I had to use heat getting the pulley off & finally I got it off & I sanded the entire end of the crankshaft & with fine wet & dry sandpaper & came up really good & I priced a New crankshaft pulley at the Mount Shop in New Zealand as I live in New Zealand & the Mount Shop wanted $850.00 plus 15% GST stands for Goods Service Tax & I wasn't going to pay for that amount of money & that was way too expensive & I got a new one from Australia site for $336.00 & the first one didn't arrive & Aimee my Daughter-in law got back to him to say we never received it & he said he did send it & I told him we haven't received at all & I don't what happened to it & he sent another one & later down the track I had received it & got in touch with the guy to say we had received it & I don't know what happened to the first one he sent to me & never ever showed up otherwise I would have sent it back to him Bugger & must have gone missing in the post well anyway before I had put the new crankshaft pulley back on I put PBC Antiseize Copper Coat Grease onto the crankshaft & some on to the crankshaft pulley slid on easily tightened the crankshaft with a impact gun & put everything back together & sweet as & I noticed when I took the old cambelt off the timing was one tooth out & having the New cambelt on it spot on the dot & running really & I will be doing the cambelt change & water pump tensioner Ideller pulley & I will do the Camshafts seals & crankshaft seal & replaced the crankshaft seal last time around to when it is due & short time later on in a couple of weeks or so I will checkout the HGK IRIDIUM SPARK PLUGS & if they still look & will just wipe them with a clean rag & put them back in & just nip them back in & if they need to be replaced I will replace the Spark Plugs but at the moment the engine is running Sweet & no sign the 3.4V6 engine has a miss fire at all & you Sir will over the moon now that you have a Toyota 3.4V6 5VZFE ENGINEin your vehicle & if I had the money I & built this 3.4V6 5vzfe Engine up & so it would reboot 30 over sized & put 6 to 7 to one Venolia forged pistons steel crankshaft & Excellent Quality after market conrods & good camshafts to go with a Supercharger that got on these 3.4V6 engines & have a slightly smaller drive pulley to go on the Supercharger & able to pull more boost pressure & run lake pipes under the side skirts & have 2 oxygen sensors both sides of the exhaust system & I dont know if can get slightly bigger headers made up to fit the 3.4 V6 engines as that would even make a better improve ment & there is a Lovely Beautiful Blonde Lady on Utube & her Tacoma only has one Turbo on the 3.4V6 Engine & it pulling 11.11 seconds 1/4 mile & speed 121 miles per hour down the 1/4 mile & could be 122 mph pretty impressive in the USA at the drags & I wish you Sir all the best with your 3.4 V6 5VZFE ENGINE & have great fun with it Kind Regards Peter

[yotapickup]

been watching this on repeat taking notes for my upcoming swap!

[AustinKamuela]

This video is going to be on loop when I dive into documenting the 3.4 swap in my 94 4runner! Thank you Dirt Garage 🤙🏽

[offconstantlyfabrication]

Doing a two 3.4 swaps one from a 3.0 to 3.4 and the other is a 3rz to 3.4 definitely a good watch before I dive into this thanks for the detailed video

[CopeManMTNDEW]

Awesome video. I got a couple 3.4s laying in my garage. My daily 89 pickup is wanting a 3.4. This video helped break it down for me.

[Springer_maniac]

I’ve done everything on my 1990 4runner, rebuilt gas tank, fuel pump etc, plugs, wires and she’s overheating, tore the front off the engine replaced water pump and thermostat, no difference still overheating. This vehicle is so solid no rust great interior, no way I am scrapping it, there is a fresh rebuilt transmission and clutch. I found a donor vehicle with 180, 000 miles is complete, if I park them side by side it should be easier than this vid because all the needed parts are there, hopefully can just switch it all over. I have a mechanic who will help me your vid is a great heads up to what is in store so thanks for that, hope I finally windup with an awesome 4Runner🤞

[rogvarley]

About to do this swap myself, appreciate your video. Now, let’s talk about that mullet, bro.

[NW-Woodsman]

Awesome vid. Do you have a link to the full engine control schematic to print out at home like you did?

[roofinggriggs]

Dude where were you 4 months ago with this how to video man? I’ve been struggling so bad with mine! 😂 good content keep ‘em coming! 🤘

[randymiller]

Great video, im in process now of this swap

[downto]

Can you make a comparison video between a v8 swap(1/2uz) and the 3.4 swap. Obviously the v8 has more power but how do they differ in terms of difficulty and what are the pros and cons of each outside of power output.

[billymunroe-williamson]

Watching this now I will also be watching this video and rewinding it several times in the future when it comes to wiring

[riseauto]

Awesome video I’m currently piecing my 5vz swap aswell

97 4runner ecu, one oxygen sensor, 2002 tacoma engine (non egr same as 4runner) 99 and up MAF, ORS harness, truck will only have a heater and radio under the dash, cool video lol took some notes 🤙🏼

[sla]

Your wiring ability is impressive

im still trying to find diagrams for obs style gmc/Chevy to finish my swap

[flexapex]

I’m trying to lock down the first GEN 4Runner for my son and we’re definitely going to 3.4 her

[AidanLyford]

This video is awesome! I have one question, fuel pump relay. How do you trigger it to kick on when necessary. In the middle of this exact swap on a 95 4Runner. It was auto but now 5speed. I can start and run the motor but I have to short the fuel pump relay to ground so the pump continues to runs until I unhook ground. The wire I am shorting to ground d is in the II3 plug. If you could give me a pointer that would be awesome. Everything else works off the ignition as it should.

[rickysorell]

I’ll be doing the swap to a 86 Toyota pickup!

[leonelperez]

Nice were you got the engine diagram?
I'm swap my 4runner 1995 3.0 to 3.4 but I need the engine control module diagram?