Might Have To Post Over Here Soon

2fst4u · 06-16-2006, 01:10 PM

has anyone swapped the front end (subframe, suspension, engine and trans) from a grand am gt into an alero? my 2.4L appears to be pretty messed up, and i'm looking at my options.

i've dropped out the subframe on my alero before, and i'm almost positive that the grand am gt has the same subframe.

a couple questions:
1. would i have to pull the subframe from a grand am gt coupe? or could it be a sedan?

2. is the grand am gt trans better than the alero trans?

3. what kind of positive things could come from this?

4. what kind of negative problems could i run into?

informed help would be much appreciated.

2fst4u · 06-16-2006, 01:29 PM

anyone?

eag182 · 06-16-2006, 01:39 PM

Is there really that much more benefit over the 2.4? To go through that much more work? I mean spy has pushed the 2.4 pretty far, farther than any 99% of 3.4's I've seen.

How is your 2.4 messed up?

2fst4u · 06-16-2006, 02:07 PM

well, it started leaking oil from the cam carrier gasket on the exhaust side. it lost a lot of oil before i knew there was a problem. so, it has been running on a small amount of oil. then, i lost all power and it shut off on my a few times. i think it shut off because of the oil on the plugs, but i'm not sure.
as far as a benefit of the v6, i've driven my sister's grand am with the 3.4L and it killed my 2.4L. the 3.4 was stock also, while i had exhaust, intake manifold, throttle body, and wai. so, yeah it would be worth it to me. i would also be getting the dhp pcm for the 3.4L which would eliminate the governor, and a few other things. these things aren't available for the 2.4L. that's what i'm looking at right now.
also, my engine has 125,000 miles on it from the previous owner.

Pimpalero03 · 06-16-2006, 02:40 PM

same trans as a 3.4 alero in a grand am gt. maybe different gearing.

2fst4u · 06-16-2006, 03:16 PM

that's what i'm thinking

06-16-2006, 03:41 PM

There are better gears in the gram am gt

Cliff8928 · 06-17-2006, 02:15 AM

The subframe is probably the same regardless of which engine the car has, I don't think any of the mounts go to it at all. Things you will have to do is swap out the ENTIRE wiring harness at least under the hood, if not in the interior. Also you would have to have the PCM cleared of it's security code data so it can communicate with the BCM and/or gauges and passlock. (might be able to do the wait 10 minutes thing)

kwhauck · 06-17-2006, 01:03 PM

yep subframe is the same.......i have a gagt one i'm using to work on my 65 swap

and if I remember correctly the alero and gase trans in a 40 tranny with 2.xx gears while the gagt tranny is a 45 with 3.xx gears.......

not sure on the specifics......

2fst4u · 06-17-2006, 11:41 PM

so, is it a good idea? would i be able to rebadge with "GT" letters then? lol

06-18-2006, 12:44 AM

U should, would look hot

bu01 · 06-18-2006, 01:37 AM

the alero hast the 4t45 with the 3.05 ratio and the gt has the 4t45 with the 3.29 ratio. the 4t40 with the 3.05 ratio is in the malibu

06-18-2006, 08:13 AM

I wish there were replacement Gears for our engines

06-18-2006, 11:05 PM

Everything will bolt right in without a problem, but like Cliff said, there are some major wiring/electrical harness issues that you'll have to address. If you get a donor motor/trans, I'd highly advide getting the entire electrical harness and PCM to make things a little easier.
You can pillage either a coupe or sedan; it doesn't matter.
All V6 car got the 4T45-E trans, and all have the same gear ratios. The only slight diffence is that the Grand Am GT got a slightly better 3.29 final drive; other cars make do with a 3.05 final drive.

bu01 · 06-19-2006, 01:36 AM

^^ thats what i said, but the bu got the 4t40e

2fst4u · 06-20-2006, 07:33 PM

i would definately use the entire electrical harness. also, planning on going with the dhp pcm. thanks for the help. this will happen when i return from iraq next october.

Coldfire · 06-21-2006, 11:44 AM

Heh, just found this thread, I was wondering how messed your engine was...you kind of left your showcase thread hanging...bummer dude, but sounds like you've got some awesome plans for the future at least!!

06-22-2006, 01:18 AM

just go with the 2.2 that way you wont have to replace the stupid intake gasket im going through that right now and the 2.2 has more aftermarket performance parts

2fst4u · 06-24-2006, 12:16 AM

i like the torque and sound of the v6 better

also, in 2003 they changed the intake manifold gaskets, right?

BlackJack · 06-24-2006, 01:05 AM

yeah, and in '03 up, they also upgraded a few of the "weaker" tranny parts, so if you can afford it, swap that out too.