what trans to use

[royaldboy26]

Anybody know if i can use a 440t4 trans in my 01 grandam gt 3400 was told only reason i couldnt is because of the passenger side halfshaft being to short but im sure i could get one made to fit

[AaronGTR]

I've never even heard of a 440t4 trans. I think maybe you meant a 4t40e?

You would not want to use that trans for several reasons. That is the auto trans for the 4 cylinder grand ams. It's possible there may be a difference in the length of one of the output shafts so it might not match up to your axles properly, I'm not really sure on that point. I do know however that it's not rated to handle the torque your V6 engine makes. It also doesn't have the correct final drive ratio.

You want a 4t45e and you want one out of a GT like yours, because the 4t45e also had different final drive ratios between the GT and the V6 SE. Try and get one from '03-04 if you can. They will have less miles and will have all the improvements GM made up through 2003.

[royaldboy26]

The 440t4 was renamed the 4t60 they can be witch the only difference between the two are the name they were used on 94 grandams 2.8/3.1/3.4 i plan on making alot of power and need a trans to hold up if the 4t60 was use on older grandams then i should be good to go i think heard i could use halfshaft out of buick my car is rated to make around 400hp

[sleepyalero]

4t65e (grand prix trans)

Getrag 282 5 speed (beretta and other car trans)

4t45e (stock)

F40 6 speed (g6)


Those are your options.




Wait. Your car is rated to 400 hp..... I wont believe you until I see pics and mod list. Sorry. Not trying to be mean. But we have plenty of idiots here who say this and that with there cars thats nothing but bs.

[ItsMeScottG]

I seriously doubt 400HP.

[royaldboy26]

Car wony be done till around march just motor will be making 260/270 hp before turbo so figure around or between 350/400 after turbo block 30 over heads done tb injectors nice cam port and polish headers flowmasters crank ecu wont really know till im done ive never done a 3400 first time but from what the desktop dyno says that with that motor built up with turbo at 10/11 psi should put me around the 350 /400 mark but like i said wont really kno till its done and it get dyno tuned

[royaldboy26]

But what about the 4t60 out of the 94 grandam and is the 4t65e pulg and play

[[ChaosweaveR]]

Oh, one of THESE threads...

[Kayaus]

Trans swap... from a Grand Prix... plug and play... ?

[royaldboy26]

Meaning no diy work

[sleepyalero]

I doubt the 4t60 will work. I gave you the trans options

What is port and polished headers and flowmaster crank?

[young gun]

Choices choices choices...
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[IMG]http://troll.me/images/obama-isnt-happy/not-this-****-again.jpg[/IMG]

[young gun]

Originally Posted by royaldboy26

Meaning no diy work

The only non diy work is to take your 4t45 and have it built and put it back and plug it in. Then play.

The second "fastest" GA on this forum runs a built 4t45

[ItsMeScottG]

Originally Posted by young gun

The only non diy work is to take your 4t45 and have it built and put it back and plug it in. Then play.

The second "fastest" GA on this forum runs a built 4t45

I'm curious as to what car are you speaking of?

[royaldboy26]

So the 4t45 will hold up had a couple people tell me they wont

Upper and lower port and polished lt1 springs 65mm tb 1.6 rockers on ex 1.5 on intake 28lb injectors new crank
Heads were done ill have everything listed when done with car just wanted other options for a trans sleepyalero thanks for the input

[royaldboy26]

2001 ga gt 3400

[young gun]

Originally Posted by ItsMeScottG

I'm curious as to what car are you speaking of?

Top 1/4 mile times <new and improved>

Schweppe

Sexy on wheels too.

[AaronGTR]

Originally Posted by royaldboy26

So the 4t45 will hold up had a couple people tell me they wont

Yes, the 4T45E will hold up. I'm running a built 4T45E in mine. Made 320whp at 9.5 psi of boost which is around 390 hp at the crank.

The 4T60/4T65 trans will bolt up to our block, but it is NOT a plug and play. Older grand ams used a 4T60 but they are a different chassis with a different sub-frame and trans mounts. A 4T65E-HD from a grand prix GTP would be a much stronger option than a 4T60, and it can be swapped in, but it requires a bunch of custom work like totally custom mounts, hybrid axles, changes to the wire harness and custom programming.

Your best options are a built 4T45E, a 4T65E-HD swap, or a manual swap using either a F40 6 speed or a getrag 282 5 speed (or 284 if you can find one). The 4T45 takes the least amount of work. All of them will require custom programming to get the most out of them, but the 4T45 will need the least. The other three need programming to even operate once installed in the car.

Upper and lower port and polished lt1 springs 65mm tb 1.6 rockers on ex 1.5 on intake 28lb injectors new crank
Heads were done ill have everything listed when done with car just wanted other options for a trans sleepyalero thanks for the input

Not sure if LT1 springs even fit these heads. Most people use LS6 springs, or an LS compatible spring from comp cams. Check out WOT-tech.com as they have a good assortment of engine parts you can use for the 3400.

I'll tell you right now to forget the 1.5 rockers... all factory rockers are already 1.6. They aren't even worth messing with. Also no need to touch the crank. They are plenty strong (and no one makes better replacements). Also you are going to need WAAAAY bigger injectors than the 28lb trailblazers to support 400hp. They won't even come close to that. I maxed out 36 lb/hr GTP injectors on my dyno pull, and had to switch up to Lucas 42 lb/hr.

[xalteph]

Why is your name yellow?

[bricooper78]

donated, and it's apparently fixed, last time i donated mine never changed. thought they'd given up on it.