LD9 tranny

[Shad0wguy]

Stupid question here, but I cannot find the answer by searching.

What is the RPO code for the 4-speed automatic mated to the LD9 TWINCAM engine?

I am doing research a possible swap into my Fiero and need this info.
And if you have a link that has details on the tranny it would be appreciated.

Thanks.

[Shad0wguy]

I think I may have found what I needed. Looks like the tranny used on this motor is the 4T40-E.

[Ralph]

yup

[ENGGUY]

In the 95 GA SE it is a 4T60E. Why would they go to a lighter transmission in the newer cars?

[Ralph]

honesty its not a good transmission shifts very hard for an automatic. 1 of the reasons ive been working on my 5-speed swap.

[Matt95GT]

Originally posted by ENGGUY
In the 95 GA SE it is a 4T60E. Why would they go to a lighter transmission in the newer cars?

I bet cost has a lot to do with it.

[VanishingImage]

I love it when an automatic shifts hard,if you can't feel it it feels wussy(to me anyways).


A lighter transmission is always the better way to go anyways. Lighter sometimes helps saves money like Matt said

[Ralph]

agreed about liking the hard shift but thats not the point to an automatic. They are supposed to feel wussy

[96gagt]

Its actually a 4T60E in Grand Ams.

M13 is the actual RPO

The 4T40E came in Sunfires.

[Ralph]

my 00 has a 4t40e unless your talking about the 4th gen GAs only

[VanishingImage]

The newer GA's have the 4T40E,the later 95 to 98 GA's have the 4T60E

[DontPassTheFence]

whatever it is, shoudl swap to a getrag. Its the only trans worth mating to this engine.

I would know, I a`sploded an izusu already :_:

[Ralph]

very true but im going into that swap now and its so much work its almost not worth it just finding the parts alone.

[Matt95GT]

Originally posted by DontPassTheFence
whatever it is, shoudl swap to a getrag. Its the only trans worth mating to this engine.

I would know, I a`sploded an izusu already :_:

Not necessarily...

http://www.isuzuperformance.com/isupage/tech/myths.html#gmtrans

[DontPassTheFence]

Oh for the love of crap dude... why didnt I know this?! I WASTED 500bux on a 50k mile izusu from a sunflower when I COULD have ganked one from a jappo izusu instead and then had me one hell of a transmission WITH LOWER GEAR RATIOS! IO#()*&%*($&Y(F&(#H$&Y*(E D$GF$ HF uy4 9

I think Im going to go hang myself with the serp. belt from my car, k?


EDIT: For the record, I ALWAYS blamed GM for these miserable transmissions.

[Matt95GT]

You don't really want lower gear ratios... unless highway cruising at low RPM is your A1 priority. Point is, Getrag's aren't always the answer.

[DontPassTheFence]

OT :: I drive 90% highway. 101 to the 202 to the I-10 -- 60 west to the I-10. 101 to the 60 to the I-10. And so on.

Most of the phoenix metro area is highways/freeways of some sort with a 55+ speed limit. And even then, surface roads are a grid of 1 mile square roads, 45mph is the limit and the lights are timed for 45-50 mph, meaning that if you go through one green light at 45-50mph, you can continue down that same road for as long as it exists, getting (usually) nothing but green lights.


I wonder if anyone has a junked storm or elsewise laying around ...

[VanishingImage]

I'll stick with my stock auto tranny for now lol

[DontPassTheFence]

sissyface :P