3.4L swap

[Footofgod]

Honestly, if power is what you want, you are looking at swapping the wrong engine. Put a Chevy 4.3L V6 in it. Bladphemy to some, but it will give you more power and slightly better gas mileage.

Like the others have said, you will see little improvement from a 3.0-3.4. I personally plan to do the 3.4 swap when and IF my 3.0 ever dies. That being said I am not trying to kill my 3.0. It runs great and I will do every thing I can to keep it that way.

 

[KidVermicious]

Chevy

This is a Toyota board, you can't say that here. I'm reporting your post.

 

[rcp916]

My vote is to do the 3.4 swap. If your looking for good fuel economy then your driving the wrong type of vehicle

 

[SCTracker]

The 3.4 gets 190 HP and 220ft-lbs of Torque. The Vortec is 4.3 liters and gets at most 215 HP (with the newer 4.3) and 250ft-lbs of Torque. Thats .9 liters of engine that only gives you 25 more HP and only 30 ft pounds of torque. Couple that with all the other problems I have seen them have (my brother has one in his blazer, I likes Chevy's as a second to Toyota until I had to fix my brothers all the time) So I don't really think its a great alternative to the 3.4 considering how much more work it takes to get one into a toyota. The 4.3 would probably be a much better engine if they didn't just chop 2 cylinders off of the v8 and had just built a v6 from the ground up.

Get a 3.4 when you are ready to switch out the 3.0. The one in my work truck has 274,000 miles on it of hard hard work and I have only ever changed the oil and some filters.

 

[rcp916]

Eventually I'm doing a 3.4 swap in my 94 runner but it'll be a Huge improvement in my rig because I'll be upgrading from a 22re. I found one in my area for $400 obo I talked to the guy and I bet you could get it for $200. It comes with the wiring harness no computer but it has all the accesories, alt,starter, PS,ac compressor. I've read some builds and have seen guys do a swap for $1500 or less (so they claim) but after finding this motor I bet it can be done for $1500.

It also depends a lot on your mechanical ability too though. If your having a shop do it, it definitely would run over $3k +.

 

[SilentYoda3]

Eventually I'm doing a 3.4 swap in my 94 runner but it'll be a Huge improvement in my rig because I'll be upgrading from a 22re. I found one in my area for $400 obo I talked to the guy and I bet you could get it for $200. It comes with the wiring harness no computer but it has all the accesories, alt,starter, PS,ac compressor. I've read some builds and have seen guys do a swap for $1500 or less (so they claim) but after finding this motor I bet it can be done for $1500.

It also depends a lot on your mechanical ability too though. If your having a shop do it, it definitely would run over $3k +.

Yeah the 3.4L swap is what I'm looking for. It's easy with decent improvements over all. The reason about the gas mileage is because more power=less gas medal mashing for hills. I'm not sure when ill do the swap but i was looking at probably getting a motor this summer and combing it over before i throw it in my truck. It's a really easy swap. I'd like to find a motor for that cheap!!:thumb3: That would just be to cool. But I'll see what turns up this summer when I'm back home. I have the mechanical knowledge and capability to do every bit of the swap, but will honestly probably take it to a shop in town for the exhaust due to the fact that I just dont feel like messing with that. I've thought about doing some other stuff too.

To the guy that has the swap with the supercharger that gets 26mpg, can you explain your build a tad please?? That's sorta what I was looking at, 3.4L with supercharger and either 30's or 31's. Thanks man.

EDIT: I will NEVER, EVER put a chevy motor in my truck. EVER. There isn't a car brand I hate more. If i see people on the side of the road I always stop to help out, except chevy's. Always a problem with something in my experience.

 

[SilentYoda3]

My vote is to do the 3.4 swap. If your looking for good fuel economy then your driving the wrong type of vehicle

to have wonderful fuel economy yes, but i believe there's a way to have your cake and eat it too. Will it be a great tasting cake? No. But cake is cake haha. I realize i wont put 40mpg on the board without something major, but a gain of power is what im looking at, the mileage is just an extra perk.

 

[SCTracker]

I bought a 3.4 off of a guy from YotaTech, it came out of a 97 auto 4Runner. It came with headers, rebuilt ported and polished heads, oversized injectors, a walboro fuel pump, and of course the supercharger (it has URD's smaller pulley that gets it to 9 pounds of boost).

The truck all of this is going into is a 88 SR5 with a 5 speed and a 3.0. I love this truck and told myself I wasn't going to build it on a budget, that I was going to build it once and build it right. That being said I switched out a lot of stuff and added a lot along the way.

-Trail Gear bomb proof motor mounts
-Competition Clutch stage 4 racing clutch
-3 row heavy duty all brass radiator
-14" Derale electric fan
-K&N intake (not actually the best for performance but I need a california legal intake)
-Custom 2.25" crossover and full exhaust with a highflow cat and magnaflow muffler
-Autometer Elite Series air to fuel ratio gauge
-Autometer Elite Series exhaust gas temperature gauge
-Autometer Elite Series vacuume/boost gauge
I also replaced all fluids and filters in the process. I had to put a 2 inch body lift on the truck to clear some things but I'm looking into taking it off now and going the hood scoop route to clear the supercharger. The only part of the swap that is remotely hard is going through all the wiring diagrams, but even still its not that bad, like I said before 19 wires all in all. If you do go the performance route you are going to have to pay a shop or learn how to tune the URD computer at some point. Its a little nerve wracking at first but its actually fairly simple.

 

[QuinnJ86]

I bought a 3.4 off of a guy from YotaTech, it came out of a 97 auto 4Runner. It came with headers, rebuilt ported and polished heads, oversized injectors, a walboro fuel pump, and of course the supercharger (it has URD's smaller pulley that gets it to 9 pounds of boost).

The truck all of this is going into is a 88 SR5 with a 5 speed and a 3.0. I love this truck and told myself I wasn't going to build it on a budget, that I was going to build it once and build it right. That being said I switched out a lot of stuff and added a lot along the way.

-Trail Gear bomb proof motor mounts
-Competition Clutch stage 4 racing clutch
-3 row heavy duty all brass radiator
-14" Derale electric fan
-K&N intake (not actually the best for performance but I need a california legal intake)
-Custom 2.25" crossover and full exhaust with a highflow cat and magnaflow muffler
-Autometer Elite Series air to fuel ratio gauge
-Autometer Elite Series exhaust gas temperature gauge
-Autometer Elite Series vacuume/boost gauge
I also replaced all fluids and filters in the process. I had to put a 2 inch body lift on the truck to clear some things but I'm looking into taking it off now and going the hood scoop route to clear the supercharger. The only part of the swap that is remotely hard is going through all the wiring diagrams, but even still its not that bad, like I said before 19 wires all in all. If you do go the performance route you are going to have to pay a shop or learn how to tune the URD computer at some point. Its a little nerve wracking at first but its actually fairly simple.

Sorry to hijack, Is this swap located in CA... I too, will be doing the 3.4 later on, but wanted to know if you got the 3.4 passed with the CA smog ref? That's my only hold back is the CA emissions, no point to swap in a motor that wont pass a visual test.

 

[SilentYoda3]

I bought a 3.4 off of a guy from YotaTech, it came out of a 97 auto 4Runner. It came with headers, rebuilt ported and polished heads, oversized injectors, a walboro fuel pump, and of course the supercharger (it has URD's smaller pulley that gets it to 9 pounds of boost).

The truck all of this is going into is a 88 SR5 with a 5 speed and a 3.0. I love this truck and told myself I wasn't going to build it on a budget, that I was going to build it once and build it right. That being said I switched out a lot of stuff and added a lot along the way.

-Trail Gear bomb proof motor mounts
-Competition Clutch stage 4 racing clutch
-3 row heavy duty all brass radiator
-14" Derale electric fan
-K&N intake (not actually the best for performance but I need a california legal intake)
-Custom 2.25" crossover and full exhaust with a highflow cat and magnaflow muffler
-Autometer Elite Series air to fuel ratio gauge
-Autometer Elite Series exhaust gas temperature gauge
-Autometer Elite Series vacuume/boost gauge
I also replaced all fluids and filters in the process. I had to put a 2 inch body lift on the truck to clear some things but I'm looking into taking it off now and going the hood scoop route to clear the supercharger. The only part of the swap that is remotely hard is going through all the wiring diagrams, but even still its not that bad, like I said before 19 wires all in all. If you do go the performance route you are going to have to pay a shop or learn how to tune the URD computer at some point. Its a little nerve wracking at first but its actually fairly simple.

i was just curious if you had any sort of specs on power and such? be interested to here! Sounds good that it's working well for you!!

 

[904r2d]

let it go?

Hi all..I realize I'm coming in on a thread 3yrs later. I'm poking around on threads cause i need help with this unicorn.
I have a 90 4runner v6 2d. head gasket blown as result of timing belt bearing thing causing a misfiring, which then caused it to overheat, blow radiator.
230K on the vehicle. new catalytic converter, fresh valve seal replacements done.
My husband and I are not mechanically inclined. can't work on it ourself.
should we let the vehicle go? if i were a guy and mechanically inclined i might consider 3.4L swap. Sounds like the 3.0L not even worth at all to maintain.

Any thoughts are appreciated.