I have a 1995 Cav with the stock 2.2L and the 3 speed auto trans, what exactly would I need to swap to the 3400? I've read up in the v6 swap page and it looks like I can use my transmission, please correct me if I'm wrong. and should I use the computer and harnesses from the vehicle the motor is pulled out of? If

a 3400 will bolt to ur trans no prob. u will need to a pcm froma v6 powered car but im not sure if there is a platform that ran a 3 speed and v6 but u could always run a grand am trans. pm me if ur interested i have coolant hoses,ps hoses and most of a manual harness i made. its rough but i drove the car for like 2500 miles with it. pm me if ur interested.

You're going to want to swap to a 4-speed. You can use a 94-98 Grand Am 3100 PCM, but you will not get all of your gauges to run off of it (no tach, no coolant temp, most warning lights will not work). You can piggyback your 2.2 PCM just to run the gauges, or you can go aftermarket.

^^^^^ i with stupid hahahaha JK he that engine should be goin in this weekend will let you know the fitment of your 3400 mounts



JBO since July 30, 2001

i keep hearing this term flying around.... "Piggyback", can anyone explane this term a lil bit? Is it a splice with the factory 2.2l wire harness? I know basic wiring, I had to rewire the headlight wire harness for my 2001 sunfire front clip. And I've done alot of custom lighting and sound systems. and also? would there need to be any fabrication on the transmission mount?

NOTa2_4 wrote:^^^^^ i with stupid hahahaha JK he that engine should be goin in this weekend will let you know the fitment of your 3400 mounts

It's about time. LOL. For all the mounts I've sold, I don't think anyone has installed using the new 3400 style yet. I've been waiting for some feedback from people, and hopefully pics.

Lyndon Korcala wrote:i keep hearing this term flying around.... "Piggyback", can anyone explane this term a lil bit? Is it a splice with the factory 2.2l wire harness? I know basic wiring, I had to rewire the headlight wire harness for my 2001 sunfire front clip. And I've done alot of custom lighting and sound systems. and also? would there need to be any fabrication on the transmission mount?

Piggybacking means you run two ECMs at the same time. The main one would be the 3400 ECM, which actually runs the engine. The other one would be your factory 2.2 ECM, which only needs a few sensor inputs, and it is used to run your gauges. In the case of a 95, your 2.2 ECM would need at least a coolant temp sensor feed, an oil pressure sensor feed, and a crank trigger feed (which would come off the ignition module). You're obviously going to want power to the right feeds as well, and possibly other sensors for warning lights, but those would at least give you the gauges that would not be functioning off the 3400 ECM.

For the trans mount, I'm not entirely sure, but I believe you would use your same mounts. Check in the transmission forum regarding 3 speed to 4 speed swap.

Quiklilcav wrote:

NOTa2_4 wrote:^^^^^ i with stupid hahahaha JK he that engine should be goin in this weekend will let you know the fitment of your 3400 mounts

It's about time. LOL. For all the mounts I've sold, I don't think anyone has installed using the new 3400 style yet. I've been waiting for some feedback from people, and hopefully pics.

We have failed you . I'm surprised nobody has installed them yet. I know why I haven't, but I doubt everyone of us has an excuse. They look great on my desk though, collecting dust with my TG lsd and jbo stickers .

Quiklilcav wrote:You're going to want to swap to a 4-speed. You can use a 94-98 Grand Am 3100 PCM, but you will not get all of your gauges to run off of it (no tach, no coolant temp, most warning lights will not work). You can piggyback your 2.2 PCM just to run the gauges, or you can go aftermarket.

Maybe not, he has a 95 so the computer setup is different. It's likely that he could even just use the PCM from a 94 Cavalier that has a 3.1 and automatic. The old 3.1 2nd gen's have a non-electronic transmission so he'd be good to go. I'm not sure if the 94 PCM can be chipped, but maybe the 93 can. A 3.1 computer will run a 3400 but you'll be a bit down on power, and have a not as flat power curve. Ideally he'll want something that he can run a swap chip in that guys sell over on 60degreev6 for the 2nd gens.

I don't know how much trouble it'll be to run 93/94 (j-body PH2) electronics in a 95. I know the 90/91 stuff doesn't quite work out to great.





i find it amusing that SHOoff has nothing better to do but follow me around & be an unhelpful dick in even cross-forum. - Jon Mick

how much simpler would it be to replace my 2.2L with the 2.4L DOHC? I've seen a few at the yard, might just pick one up and rebuild it. I know that the mounts are the same as mine. I know that my 3 speed auto wont work with the 2.4L, but what problems would I run into with wiring and other specifications? Im just looking for a better motor then the 2.2L, I would go V6 but from what I'm reading it sounds like there is alot of fabrication and what not. would the 2.4L need as much fabrication and to piggyback multiple ECMs as the V6's? Im sure that I'll prolly pull the 2.4L out of a Grand Am prolly 98-01?

The 2.4 might be a little simpler, since you can get all factory parts for it. However, the amount of work is going to be the same. Where you have a 95, there may be a problem with just getting the ECM and Harness from a 2.4 car, because they are OBD II, and the 95 is OBD 1.5. The 95 never had the 2.4, it had the 2.3 Quad 4, which is a different motor. If you can get the 2.3 ECM and harness, you can use it to run a 2.4.

It's really not any more difficult to do the V6 in your car. As SHOoff mentioned, you may be able to use the 93-94 3.1 ECM/harness and keep the 3 speed, since it's not controlled by the computer. I've heard people say that the 3 speed is actually stronger than the 4 speed, too.

By the way, your V6 will bolt right in with a set of my mounts, in case you're not familiar with them.