I was wondering if there is any specific 4l60e i should pic up. If i get one from a v6 camaro is the bell housing the only thing i need to change? or should i just stick with trying on getting a V8 one.

 

I would get one from an b-body, I remember reading on a local board that one from an f-body is actually different than the ones used in the Impala's and F-bodies, I'll see if I can find it the post and put up why, and this guy is a very close to being an expert on the b-body cars.

EDIT:

Ok, I found what he posted and this is it

 

v6 has its own bolt pattern
and is not made originally to handle the torque from a V8

 

well now im a lil confused. so would the 96 b body fit in the 3rd gen? i could understand a trcuk/suv tranny not fitting but what would the difference be between a b/f body car?

and for the v6 tranny that what i was thinking i could just change out the bellhousing and maybe like the servos and **** like.

 

The '96 is probably because it's OBDII instead of OBDI, but from what was posted down in that thread a bit was this

You might want to make sure of the year of motor and get one to match.

You may be able to get the correct year b-body transmission and swap tailhousings so you get the torque arm mount, I think the tailshafts are the exact same though.

 

where can i verify on the block what year the motor is?

 

I dont think that it is the motor that is the problem. It is the computer. Find out what year the harness and computer are from and run that year B-body trans. Your LT1 came from a 9C1 Caprice right?

 

yes the motor came from a 91c caprice. but the dude put in a th400. and somehow got it to work. and ill just the work that was done is really shitty. like the trans crossmember is the stock one with like 2' tubing welded to it. i dont even know if im gonna be able to get the crossmember off without grinding or a chisel yet. and the torque arm has the same tubing around it and it secured by zip ties and like steel bands. i dont even think the radiator has the trans cooler mounted to it.

If you havent seen my other posts the flywheel is wleded to the flexplate. and right now when i go to start the motor the T/C and fleplate just free wheels. This is why I want to do this swap. get this **** done right.

 

Do you know if the the ECM is OBDI or OBDII? That should help narrow down your search. Did he leave the trans harness there or hack it all up? You could get a 700R4 out of a third gen and put that in. It bolts up to the LT1 just fine and should be pretty easy to get ahold of. Then just get the mount and torque arm to go with it. Those need minimal wiring compared to a 4L60e if he messed up the harness to the trans. Unfortunaly it sounds like you have many issues to work out with the car.

 

i believe that the car is OBDII it has the 4 connector PCM and has a MAF. I dont think the harness is to hacked up 'cause the wiring is a mess and there are alot of loose connectors laying around. I just havent looked to see if the tranny wiring is still there i just know there is a 2 prong connector laying by the tranny on the passenger side. just havent gotten to the driver side yet. for the past couple of days ive been avoiding it if you know what i mean.

 

2 prong connector should be the speed sensor.

I'm using a a 95 impala ss motor with a 95 roadmaster 4l60e. All I had to do was swap the tail shaft housing with one from an f-body to get the torque arm mounts.

 

is the tail shaft housing a different length? 'cause im just planning on buying an aftermarket crossmember. though it my just come down to price.

 

95,96, and 97 4L60E's from LT1's are interchangeable. Like mentioned above, you may have to change the tailshaft housing to get the torque arm mount bushing on, if you have a tranny that is not from a camaro/firebird.

94 4L60es can NOT be interchanged with any other year.

A stock 700R4 crossmember from a thirdgen is whats used.

 

First off thanks for all the help. i know this board isnt really for this but i wasnt getting to much out of the tranny threads.

I guess this weekend im gonna hit the local junkyards and see what i can find. I also hope i can get undereath the car this weekend and see what i got to do to get the cross member off. and see what is salvagable.

I was also wondering what drive shaft i should get 'cause it has different one in there d2 the 400 being in there. will a stock 3rd or 4th gen work? or should i just get a stock 3rd gen and a yoke for the 4l60e?

 

Stock 3rd gen (T5 & TH700R-4) and 4th gen driveshafts interchange.

 

i just want to clarify i should get a 95 96 97 4l60e. now should i get one from a b-body since thats what my motor came out of. or would anyone from those years work as long as i get the f-body tailshaft?

 

I would probably stick with a b-body and then find a tailshaft housing for an f-body and swap them, it's a simple swap, 4 bolts.

 

A '94 is a non-PWM unit, which means the '95 has 1 more solenoid that a '94. '96-'97 use a different 3-2 downshift solenoid strategy. The valve body plate, and solenoid are different. '96 and '97 are interchageable.


Thats what I got from Frank @ CPT awhile back. I asked the same question about the interchange of diffirent years.

 

well today i looked at the tranny crossmember. It looks like they didnt screw up the mounting for the stock cross member too bad. But i did also notice a nice lil puddle of fluid underneath the tranny. I need to get a good hyd jack so that i can actually get a good look under there.

I also found out that there is no trans cooler so that adds to the list. I dont know if the 400 required one or not but i guess it doesnt really matter now.

I also noticed that theres is a gap inbetween the flexplate and the crank. so im guessing the flexplate defiently broke. once i get a decent jack and pics ill post them up so you guys can see the wonderful craftmanship.

 

well i just realized something when i went to my local junkyard. How do I identify a 96-97 4l60e. I understand that 4l60e should be cast into the case. or should i just go somewhere else that has a more organzied inventory, rather than the good ol well go in the back and see what we have. If i can find one at the one i went to this weekend they said they will sell me one for $250. which i dont think is that bad.

 

This is what I found for a f-body, might be the same for other LT1's

 

thanks man thats gonna help out alot.