1UZ vs 350Chev vs LS1

[Looonie]

Just wondeing if anyone has some personal experience where they could recommend one of these engines over the others? (Although probably not the LS1 because they're about 3x the price )

I'd like to bang a V8 in the street car, mostly used for cruising and will be fitted out with a towbar for pulling the racecar to the track and back eventually...

I'd think 1UZ would be the best option as cheap, reliable and I *believe* a relatively bolt in option for a MKIII supra chassis...

But my concerns are being only a 4.0l that possibly lacking in torque and HP compared to the 350chev... also extra cost of wiring etc to install vs the dirty old carbie setup and plentiful availability of aftermarket bits n bobs for the 350...

Planning to run pretty much stock with exhaust and cold air intake...

Any ideas on stock hp/torque figures for these engines?

Has anyone personally installed a 1UZ into anything else and knows what sort of issues I might run into putting it in and getting it up and running?

Cheers!

[sergei]

No contest there, UZ wins hands down.
UZ is very mildly tuned and makes more power per litre than the boat anchors you listed. There is a lot of potential with UZ, and it is infact a modern engine (unlike 60yo boat anchors).

[Mr Revhead]

350 chev..... ew!!!

iv personally been in a 2000 4wd hilux with a 1uz being used as a tow car.
trust me... it doesnt lack power!

i can see so viable reason why you choose the chev.

[flygt4]

the chev's sounds niiiiiiice, but thats about all they have going for them. id hate to think what an Ls1 is worth too.

[edwagon]

350 chev..... ew!!!

Thats a bit harsh on the old small block chev!
But yes, theres no way Id put one in anything these days - especially not when there are better options available- Id def go the 1uz

I don't have much experience with the ls1 (driven a few but havn;t owned or modified) but I know alot about the small block and basically, they're a dinosaur compared to either the ls1 or 1uz. They're heavy, thirsty as sin, and old technology - the heads were designed for leaded fuel, if you run a carb (like a 600 holley) they require constant tickling to keep them running right, they eat plugs, stuck with a 3 spd auto unless you can be bothered finding/rebuilding a TH700R4 trans or finding/paying for a manual which will cope. They were a legendary engine 'back in the day' but unless you actually want a chev for some reason (like for a classic car), then stick with late model stuff.

Im not an expert on 1uz, but not THAT hard/expensive to get up and running on a factory ecu

[Mr Revhead]

you should hear what i really think about them!

[Dell'Orto]

Dunno what 3UZ's go for, but I'd track one of those down if you're concerned about low end torque, they're bloody impressive.

[ollieboy]

Our local ambulance uses that chev engine, its the biggest piece of poo's engine I've seen in a while. Its the second one the ambulance has had since new which is 1992 I believe and the first one only lasted 400,000kms, which I guess is alot but a Toyota should get more. The second engine cost $10,000 to be shipped from the states and put in the ambulance, not sure if this is good? But it runs like crap, the mechanics are round there every other day and it just won't stay in tune and uses a couple of litres of gas to go maybe 10kms down the road. Also 3 speed auto FTL!

The only positive is I live one door down from the Ambulance station and there's nothing like hearing it grumble into life on a quiet night while I'm sleeping. [drool]

[NZ_AE86]

A 1UZ in a 4WD Hi-lux can out tow any other service vehicle we've used!
They sound better the a pushrod shitter any day!

[~SlideWays~]

A 1UZ in a 4WD Hi-lux can out tow any other service vehicle we've used!
They sound better the a pushrod shitter any day!

Whats it like for fuel consumption when towing your ae86 plus trailer (to manfeild for example)?

I towed my ae92 on a heavy trailer + tools + spare set of wheels/tyres with a 2005/6 maxima 3.5 v6 auto jobbie and man it guzzled.

[Adamal]

Performance wise, I'd say a 1UZ hands down, but they can't beat the availability of parts and low cost on parts for the 350 Chev.

Years ago (Long before the 1UZ's conception) my dad dropped a 350 into his '71 XJ6. One comment he made to me was that for the price of ONE piston of the original AJ6 engine, he could get a full set of pistons and rings for the 350.

There is HEAPS of aftermarket support for the 350, way more than there would be for a 1UZ.

While I try to remain unbias on things, after saying all that, I'd still go with a 1UZ because I think pushrods are for unsophisticated cavemen. No offence Dylan!

[barryogen]

I towed my ae92 on a heavy trailer + tools + spare set of wheels/tyres with a 2005/6 maxima 3.5 v6 auto jobbie and man it guzzled.

The more torque the engine has, the less it will "notice" a large load behind it... the V6 maxima is good, but it's no 4L V8

[escortman]

duno if this is really helpful but thought id say ther was that i think ke30 with 1uz doing 10s and all it had was nos

[Mr.Phreak]

I wouldn't touch a 350 for a mk3 conversion, the LS1 would be nice and have great potential (Probably more than the chassis ever would) but as you mentioned, it won't be cheap.

Go for the 1UZ, if you're really worried about power, don't put a slush box behind it and run a decent piggyback or complete aftermarket ecu to. The biggest issues you'll probably run into are the headers, I'd say they'll be a tight fit around the strut towers. And you'll be wanting the rear sumped Soarer engine to make life a bit easier.

Guessing you've checked out www.v8supra.com ?

[Lith]

Or if you want to get the best of both worlds, a Nissan VK56DE More torque than the Chevs, sounds hot, is more quad cam variable cam timing goodness and reliable as hell. Might be a bit harder to find though.

[Mr.Phreak]

It's physically bigger too isn't it?? Making it fit in there a little more difficult

[barryogen]

It's physically bigger too isn't it?? Making it fit in there a little more difficult

Wider V from my reading a while back.
Meaning it is wider, but sits lower... would be good under a subaru bonnet :)

[2LTR Rona]

A 1UZ in a 4WD Hi-lux can out tow any other service vehicle we've used!
They sound better the a pushrod shitter any day!

Whats it like for fuel consumption when towing your ae86 plus trailer (to manfeild for example)?

If the little red tach needle is anything to go by the not that good.....when I was in the one Rev mentioned it was pretty much pinned to redline majority of the time....just ask him about getting back in after a stop

They do drink quite a bit, but that also comes back to how the crazy man drives it too

[ants_ae92]

1uz all the way. 4valves per cylinder FTW.

Also the later model 1uz would be what your after, with a higher compression ratio and vvti.

Heres some basic Wikipedia info showing the UZ class of engine.
http://en.wikipedia.org/wiki/Toyota_UZ_engine

And the latest 1uz has at least 50 Nm more torque than the earlier model (factory stated).

[Mr.Phreak]

Also the later model 1uz would be what your after, with a higher compression ratio and vvti.

And the latest 1uz has at least 50 Nm more torque than the earlier model (factory stated).

Which will be harder to find, and more expensive. Not to mention the extra wiring involved