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non-HD trans in 97 GTP?

BrokenRhythm

BrokenRhythm

New member
just came back from the trans shop and they said i dont have limited slip.. i always thought that the gtp's came with a HD trans with limited slip.. can someone please clear this up for me? thanks

and is it worth it to go to a single chain setup at this time?
 


They have a larger differential, but NO 4T65Es, HD or otherwise, came with limited slip.

How would we know if it would be worth it to go with a single chain with no information about your car?
 
well my car is a 97 gtp, i just picked it up and plan on modifying it to a decently fast street car (high 12's-mid 13's). so far it has a thrasher intake, slp exhaust, cat eliminator, lowered, 3.4 pulley. there might be more done to the car, but i havent looked into it much so far. the trans was blown when i got it and im upgrading it as we speak with Intense racing parts.
 
You're running a 3.4 with only an intake, catback, and no cat? Not good, my friend.

As for the chain, you're far from even being able to think about breaking your stock chains. You might be about to break other things with that 3.4...
 


Sabrewings said:
You're running a 3.4 with only an intake, catback, and no cat? Not good, my friend.

As for the chain, you're far from even being able to think about breaking your stock chains. You might be about to break other things with that 3.4...
Click to expand...

Seems perfectly fine to me. The Grand Prix community needs to stand back and realize how paranoid they are about 3.4 pulleys. :th_tongue2:
 
hah ok, but do all gtp's come with a HD trans?
btw i will be getting an intense ecm, 180t, and external trans cooler soon. just trying to get the trans fixed so at least i can drive it to work instead of driving my 9mpg ramcharger everyday haha
 
BrokenRhythm said:
hah ok, but do all gtp's come with a HD trans?
btw i will be getting an intense ecm, 180t, and external trans cooler soon. just trying to get the trans fixed so at least i can drive it to work instead of driving my 9mpg ramcharger everyday haha
Click to expand...

Yes, all GTP's come with the 4t65e-HD.


...and it's PCM, not ECM.
 


BrokenRhythm said:
ok thanks. the trans guy asked if i wanted to upgrade to a limited slip, and i figured they all were already
Click to expand...

Our diffs are too small to build a reliable limited slip. Probably why GM never did it themselves.

Scratch that, I think they have done it either on a concept or race only car. Just too expensive to do on commercial models.
 
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