NOSFEDGTA

Will a 4th gen 3.4 and intake fit in a 3rd gen ? I will use my injectors, harness computer yada yada. Any help here? I want to use the newr intake cause of the better design and the motor is Getting a turbo. I do not want to get a 3.8. There are just to many things to change. So anyhelp would be good. Also will the rk sport 3.4 headers work in a 3rd gen.? thanx in advance.

RenoLB8

No, it won't work. Not wothout some serious modification. I'd say just port the heck out of your 2.8 intake setup, and use the 3.4's injectors. This is my plan. The 3.4 is a distributorless engine, so your computerwould not work with it directly.

------------------
Reno
'88 Firebird LB8
"Cerberus"
Lots done, lots doing.
Slowly building exterior now, new front bumper, then Formula wheels, then ASCD hood, then 91 GTA spoiler, all unpainted/mismatched til I can afford a good paintjob!!!

pods8

I looked into using the actual intake from the 3.4, with my harness etc... cause I like the design more, the big problem is the cross over in the back lies right where the distributer is. Others small problems, would be adapting the throttle body, vacum lines, and throttle cables. So unless you want to rework the cross over in the rear of the intake it ain't gonna happen.
-pods

------------------
88' Sport Coupe W/ T's
2.8->3.4 5-speed, accel coil-8.8 wires w/ bosch platinums
black and silver, grey interior, w/ 95' cloth seats, 3way power driver

CamaroRSpimp

Actually, I have looked into this myself. Go here, <a href="http://www.tacreationsusa.com">Trans Am Creations USA</a>. They sell used motors really cheap. From what I hear, the 3.4 is actually just a bored and stroked version of the 2.8 and is worth 160 BHP. I believe it is a direct replacement aside from the flywheel, which you will need one from a 3.4. Ask them any other questions you have. Hope this helps.

Dan84SC

If you set up the 3.4L the same as it was in the fourth gen F-Body, it should fit in a third gen with no problems...

If you just swap the block and then stick everything you had on the 2.8L on the 3.4L, that I don't know about.

I'd just move the computer and everything over from the fourth gen.

RenoLB8

Alrighty, time to wake up and smell the coffee. the 3.4 is indeed a stroked and bored 2.8. IT is also full of newer technology, different wiring, only similar sensors, and, oh, yeah, IT'S DISTRIBUTORLESS!!!!! S\Check pods signature, he's done this swap, he IS the man, so I don't think he has to do any more research on the topic. (glad to see you around, pods, BTW) Now, if you're going to do the 3.4 block, which is exactly what I'm going to do, you use the block and the heads, nothing else. You have to swap the entire 2.8/3.1 intake, sensors, etc onto the 3.4 block, then it will work cherry. If you try to use the 3.4's intake without redoing your enitre wiring harness, computer, etc, it won't work.

-Reno

Dan84SC

What if I want the fourth gen computer, intake, heads, EVERYTHING, and run distributorless? Will it still fit in a third gen?

pods8, do you have a web page with the details of your engine swap?

TomP

You sure you want DIS? Those parts are expensive when they break. I'm glad I have a distributor!

I don't see any reason why using the whole 3.4 system wouldn't work, but it's much more labor, of course. Don't forget too if the 3.4l ECU was paired with the 4L60E electronic automatic, you might get a check engine light.


------------------
-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards

Dan84SC

I have no problems with DIS... I used to own a '95 Beretta with the 3100 V6 (3.1L SFI, DIS). It was a damned nice engine, and I never had problems with it.

Plus, I'd have to have DIS if I wanted to use the computer and have SFI injection, wouldn't I?

pods8

Sorry no webpage, I've answered some very detailed replies on it, to do the block is rather straight forward. Put the 3.4L block/heads in place of the 2.8, this means swap entire intake, sensors, distrubutor, oil filter housing, assesory brackets, (the is talk on the flywheel I used my 2.8... no problems). Use the 3.4L injectors or an equivalent(19lb).

If you wanted to use the entire 3.4L it would fit but I wouldn't want the headache of setting up the entire computer system, because you would need to wire it into all your assesories and dash to use them, if your up for the challenge go for it.

Yes to use SFI you would need the 3.4L computer. I think the MPFI is just fine.
-pods

------------------
88' Sport Coupe W/ T's
2.8-&gt;3.4 5-speed, accel coil-8.8 wires w/ bosch platinums
black and silver, grey interior, w/ 95' cloth seats, 3way power driver

Dan84SC

Thanks for the info. If I keep my Camaro (I might have a new job soon, if all goes well, and it's in a state with emissions restrictions), I'll probably go through the trouble of retaining the SFI setup on a 3.4L swap.

I'm not very familiar with your car... What does it run in the 1/4 mile with the 3.4L setup? What tranny (thirdgen T5?) and rear axle setup are you running with?