DragonLTD

I am considering a engine swap in my 91 extra cab, right now I have a 3.0 with downy headers, 2.5" exhaust, and K&N intake. But its still a 3.0 and a dog, so I am wanting to do a motor swap, either a Toyota 3.4 or a Chevy 4.3. I have been doing research and estimate that I will spend about $8000 for a 3.4 swap. I have a couple of questions regarding the chevy stuff: is it more or less expensive to do the chevy swap, can i use the R150 toyota tranny or do i have to go to a chevy tranny, if i do have do swap transmissions do i need different transfer cases, is the chevy engine reliable? I know there is a lot more parts for the chevy stuff, and I can potentially get alot more power. What are you opinons? Any thing will be helpful. Thank you.

Dare44

i threw around this idea on my old truck and decided it was easier to just buy one wiht the 3.4. but the 4.3 will have more power but be prepared for more problems, u can use the r150 tranny u just have to buy the conversion kit. i cant remember who makes them but someone does. and the 3.4 will be much easier to wire, put in, bolt up all that stuff cuz it is still a toyota motor and not all that much was changed. so the concludsion the 3.4 is easier and cheaper if u can get a cheap motor, and the chevy is more difficult, but has more power and parts available for it. hope that helps

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DragonLTD

Thanks, that does help some. That is kind of what I was thinking, doing the toyota swap would be easier, but there is just so many parts out there for chevy stuff.

breknraj

I'd be interested in finding out how you got to $8k for the 3.4 conversion. I bought an entire donor truck, and used the full ORS kit, and still came in around $5500. I still have stuff to sell to recover some of that, too.

The 3.4 is about as simple as engine conversions can get, since it is the same family as the 3.0. About the only true fabbing that needs to be done is for the exhaust - the rest of it is bolt on. It is a great upgrade, as you get more power and better gas milage at the same time. I really like what it did for the drivability of my truck.

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Raj : 1960 Homo Sapien. 192cm, Blonde, Blue. Soon to lose spare tire.

Worf : 1990 SR5 Xtracab 4x4 5 speed, Inca Red Metallic. 3.4 converted, with Taco 5 spoke alloys, 275/65R16 BFG AT K/Os. Soon to add rear e-locker.

fillsrunner4

Both are really easy to do. Wiring for a 4.3 is cake and the ability to basicaly drop, wire, and fire a 3.4 makes it the easiest choice IMO

Judging by the question howeven tells me you need to did much deeper into what you are about to embark in. Dont take that as a the wrong way, as Ive rushed and failed but think that the number one way to do such a think like this is to research as hard as you can. The info is out there. Check out mine and others swapns on this forunm and youll find all the in's and outs of both swaps

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94' toyota 4runner (Many a change!) purchased bone stock, NOW... SAS, 37x14" Iroks, Rear Leafs, 5.29's , Air locked front, Welded rear, 4.3L, Chevy V6 , 5spd swapped, dual T/C's MC10R10, flatbelly with custom skids, sliders, and so much more.

Might as well start reading this if ya want know more
Fillsrunner4 3.4crawler Build Thread
Fillsrunner4.3 crawler (Part Two) build thread

RobD

I'm not sure where you got the $8k mark, either. I bought my complete 3.4, from fan to flywheel, intake to oil pan, computer, wiring harness, A/C compressor, power steering pump, and alternator, for $2000. I figure I have another $1500 into it, including a brand new exhaust. Sold the 3.0 for a couple bucks. Probably could have gotten more.

I never used any parts other than off the shelf stuff from your local autoparts place. It's as bolt in as you can get, with very little fab work, as has been mentioned before. And it's ALL Toyota.

Did the work last August and I've put 40000 kms (25000 miles) on it since, with nary a hiccup and a whole lotta fun driving it.

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1991 4Runner, 3.4 5VZFE swap, OME shocks/springs, 33" BFG All Terrain T/A KOs, Pioneer head unit, Infinity speakers, XM Satellite radio

DragonLTD

The 8k is rounded up, but with the ORS kit which is about $1750, supercharger for $2700, complete 3.4 engine for $1200 comes out to about $5700, what i am estimating with the 8k is worst case (if i have to replace all the 3.4 parts i.e. p/s pump, alternator, water pump, starter, etc.), plus if you go with the URD or TRD 7th injector kits that is another $900. The 8k isnt taking into account the price I would get for the 3.0. I am giving a higher estimate than what I will actually spend just in case I run into any major problems. I have been doing research for a while I am just interested in other people's opinions, see what they liked or what chalenges they ran into during their swaps.

RobD

Your best bet, if you want supercharged, is probably to find a complete supercharged engine. I know that it has been done by piecing things together, but I think it would be a faster, less painful way to do it, and probably cheaper in the long run.

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1991 4Runner, 3.4 5VZFE swap, OME shocks/springs, 33" BFG All Terrain T/A KOs, Pioneer head unit, Infinity speakers, XM Satellite radio