newbie ?

[85_305]

a 3.4l tdc (twin dual cam) is rated at 205-210 depending on year and tranny. there never was a factory 3400 that came with 215hp, they were between 180-185 depending on the vehicle they came in (only difference is pcm programing).

the camaro is 160hp. yes, a mini van had more power than a v6 camaro in the same year. reason being the v6 camaro was old technology, not a whole lot changed between the first efi 2.8 and the 3.4l (aside from bore/stroke). it made 160hp, enough to move it around for people that didnt want a v8. a 3400 needed the power, it was the biggest motor put into things like mini vans, grand ams, ect.

Well I wouldn't use the whole "old technology" argument (read: Look at 500hp Corvettes, stock of course, using this "old technology"), but I still think it's silly they were rated less than a damn PONTIAC GRAND PRIX! lol. But i do kinda see your point, needing a high-power fwd 3400 for mini-vans and what not.
It's just amazing it's teh same motor, yet its.. not?

[86euro]

The Camaro 3.4 is "old tech" because it's a gen 1 motor that basically is an enlarged version of the mpfi 2.8L introduced in 1985.

[TazMan]

Hmmm... I thought it was 160-180 hp, are we talking about the carb. one?

Geez, if we are, then I will be golden for my plans, who needs a V8?

Someone please correct me if I'm wrong, but I don't think you'd be seeing 180 hp on a carbed 3.4 without mods. I think when they changed displacement from the 2.8l to the 3.1, and then the 3.1to 3.4, there was only like a 5-10 hp increase each time. The big increases came from the intake changes.

Cool. Is the improvement of the 3.4 much more noticable than the 2.8?

I'm going to be building my Jeep off for offroading, need the power for bigger tires and such.

I think you'd also be getting at least an extra 30ft.lbs.tq. if not more. The HP will make it a little faster, but I think the extra tq. would take care of those big wheels and the extra weight you were taking about, especially while off-roading or accelerating from a stop.

[85_305]

The Camaro 3.4 is "old tech" because it's a gen 1 motor that basically is an enlarged version of the mpfi 2.8L introduced in 1985.

And what generation motor is the 3400? II ?
Isn't a 3.1 basically a 2.8 too though?

[bszopi]

3400 is a Gen3 engine. Any iron head engine is a Gen1, any alum head engine with flat-tappet cam is a Gen2, and any alum head engine with the roller cam is a Gen3. And then there is Gen4, but I think what defines that is still in the somewhat grey area. All the VVT engines will be Gen4, but I think the 3500 non-VVT would be considered Gen4 as well.

And then there is the DOHC, which I think would most likely be in a class of itself, but possibly considered a Gen2.

And remember, there are AT LEAST 3 versions of a "3.4", so you really need to be clear on what you are talking about when discussing them...

3.4 iron head
3.4 DOHC
3.4 (3400)

[85_305]

3400 is a Gen3 engine. Any iron head engine is a Gen1, any alum head engine with flat-tappet cam is a Gen2, and any alum head engine with the roller cam is a Gen3. And then there is Gen4, but I think what defines that is still in the somewhat grey area. All the VVT engines will be Gen4, but I think the 3500 non-VVT would be considered Gen4 as well.

And then there is the DOHC, which I think would most likely be in a class of itself, but possibly considered a Gen2.

And remember, there are AT LEAST 3 versions of a "3.4", so you really need to be clear on what you are talking about when discussing them...

3.4 iron head
3.4 DOHC
3.4 (3400)

Ah well this is why i get confused. Damn lol.
To the OP, if you have the DOHC 3400 go for it! lol.

[Guest]

Ah well this is why i get confused. Damn lol.
To the OP, if you have the DOHC 3400 go for it! lol.

Arg, there is no such thing as a "3400 DOHC", It is a 3.4 DOHC.

[85_305]

Arg, there is no such thing as a "3400 DOHC", It is a 3.4 DOHC.

Dammit i suck don't I Well dammit the 3400 came in the f-bod's then or what?

[grandprixgtp_91]

nope the 3400's came in the n body's and such and the 3.4L iron head was the f body's.

Jake

[85_305]

I guess i just suck.
GP's came with the dohc 3.4
F-bods, the iron 3.4
grand am's- 3400.

Am I straight?

[grandprixgtp_91]

thats correct

Jake

[85_305]

About time! Lol. What else did 3400's come in?

[forcecop]

Nononono, we don't care about the cars.... We care about the trucks!

In the last couple of days, I learned that I probably could fit a GM 350 (I know, not a 60V6) with 290 hp into my Jeep. The actual crate engine is around the same price as the 3.4 that I have been leaning towards. I know I haven't considered the cost of those items that I am going to have to replace with the V8 (tranny, engine mounts, and everything else) compared to the direct swap that the 3.4 offers.

Is there anyone here that has had stick time driving the 3.4, after swaping it from a 2.8?

I think I would like to stick with the 3.4 as it should be more fuel efficient, and won't require me to spend the additional money on the rest of the drivetrain NOW, as opposed to when I decide to get around to it.

How much more would the additional items that the 350 needs cost me?

[TazMan]

I have no idea what the engine bay looks like on these trucks, but does anybody know if there's a way he could fit the heads/intake from a fuel injected 3400 and convert to fuel injection? Maybe an UIM designed for RWD or something? I assume it woud be good for alot more power than the carburated setup.

[Guest]

I have no idea what the engine bay looks like on these trucks, but does anybody know if there's a way he could fit the heads/intake from a fuel injected 3400 and convert to fuel injection? Maybe an UIM designed for RWD or something? I assume it woud be good for alot more power than the carburated setup.

You mean like this?:




Yes that is a small port 3100 top end, but a large port or 3400 top end would fit just the same.

I'm actually working on mounts and such to swap an entire 3400 into an S-series.