hi everyone, as some of you know i've recently joined the blown HG club. it was already replaced by toyota once so the recall is out of the question. im tired of battling with this engine. I;m looking to do the 3.4l swap so i would like to know:

Pros/cons of doing this.
will it bolt up directly to my automatic transmission?
price others have paid to have this performed(not including engine price)
what other parts do i have to buy to make this work(obviously ecu and wiring harness)?
things i should look out for.

and most of all are there any major problems with the 3.4???

anyinformation would be much appreciated.

i have done alot of searching but im still not quite sure what i need and if it's worth it.

i plan on driving this truck for awhile(atleast a few more years) but cannot afford to drop a ton of money into it, however i am not interested in rebuilding the 3.0 and possibly having trouble with it in the near future again.

 

check out cebby, hes been working on just that swap. he did post the other day that his hg went out on him.

lee

 

One thing I can tell you is that your gas mileage should improve. I owned a 93 pickup with the V6 and it got worse mileage than the 96 T-100 with the 3.4.

 

bump for advice

 

cebby has been doing the 1uz-fe into his runner not the 5vz-fe...

and all i can tell you is to search...

 

I have swapped truck.

Fixing a blown head gasket is cheap and easy.

It will not bolt to your auto, you ought to get the whole drivetrain with engine/tranny.

It is not cheap, easy or cheap.

I got 20 mpg with 33's and 5.29's on the highway.

Do this if you can do it yourself and plan to keep the truck forever.

 

Actually, that's not true. It will bolt to the a340H, but the tranny does need some upgrades to handle the power. Checkout TeamShiftPoint for more info on this - he's done a number of 3.4 to a340h swaps. The a340f is a better tranny, but it would require a Marlin adapter to bolt up a tcase that drops on the pass side.

Solid advice right there.

 

bump...

 

If you have an auto, you will need to mod it or swap in a manual tranny (like me). You can also get the 3.4 tranny but that will require a different xfer case and adapter for 4x4.
Gas mileage will improve.
Bolt up swap but you will need 3.4 accesories like ps pump, vsv's, charcoal canister etc.
Do a search for the swap and you should get some links.
This is my 1st ever swap and I have put almost 10k on it with no problems.

 

No one has actually seen one of these modified autos in person AFAIK.

I took calls all day on how to make it work. The internals are fundamentally different in size, function and number. Why not use the tranny that comes behind the 3.4? You know, the one made for the 3.4? If you get that far in and think keeping things "stock" is a better idea than using a tranny for the engine, you are nuts.

Marlin sells an adaptor to get a gear drive case behind that tranny. I have owned three of them. Only in the last 3 months have I finally gotten one that is not supposed to leak. Dual cases are easier, you don't have to eliminate the park solenoid.

If you have a 5spd truck and skills, do it in the driveway quick and easy.

If you have an auto, swap engine/tranny, swap to 5 spd, fix or sell that SOB, placed in order of cost.

 

Actually, that's a good point, Flyg. Though, I do think it can be done. Heck, if JD can make one live behind a 5.0, there's no reason it couldn't live behind a 3.4. But whether or not it's worth it is another question all together.

 

thanks guys. yea ive gotta find a donor first and ill just carry over whatever tranny that has.

 

hektik how hard was the tranny swap? was it the 5 speed behind the 3.0 or from a 3.4?

 

Same thing when concerned with the swap.

 

Alright...found a donor 1997 4runner: 1200 for the engine( 100,xxx miles)
500 for the tranny(automatic) and ecu. however the chevy dealership i work at can get me a motor from a 1998 with 45,xxx miles for the same price. would i have a problem using the 98 3.4l with the 97 ecu and tranny?

does 1700 for all of that seem reasonable?

 

[QUOTE=Flygtenstein]
I took calls all day on how to make it work. [QUOTE]

I can testify to that.

 

Did you try the 3.0 charcoal canister?

 

Sounds reaonable to me.

 

no ihavt tried anything yet im not buying anything until im sure it will all work together. does anyone know if i will have trouble with the ecu and engine not being the same year?

 

Yes, according to Mike @ ORS. Read his tech article about the swap: http://www.offroadsolutions.com/technicalarticles.htm

BTW, ORS is where Flygtenstein used to anwser the phone all day, so he knows what he's talking about.