Kind of...2004R's were for Buick/Olds/Pontiac motors. The lower 2 bolt holes and the 2 dowel pins will line up.
They were used in other "Chevy" applications throughout the 80's. There were some that came with a dual bolt pattern for the upper bolts, most did not. If you're lucky and it has the dual bolt pattern - congratulations and bolt it up!
If not, they make adapter plates that convert between the two bolt patterns. I used one to put a 700R4 behind a 5.7 Oldsmobile engine. You also need a spacer for the nose of the torque converter due to the thickness of the spacer plate and longer dowel pins are a really good idea. It's not ideal in many ways, but does work.
I don't know if the flexplate needs to be changed for LS motors. It does not need to be changed for pre LS motors.
You will need to fabricate a bracket/linkage for the TV cable on the 2004R, else you won't make it around the block without smoking the transmission.
All that said, my opinion is that you'll be farther ahead to convert to a 4L60E and sell the 2004R.
They were used in other "Chevy" applications throughout the 80's. There were some that came with a dual bolt pattern for the upper bolts, most did not. If you're lucky and it has the dual bolt pattern - congratulations and bolt it up!
If not, they make adapter plates that convert between the two bolt patterns. I used one to put a 700R4 behind a 5.7 Oldsmobile engine. You also need a spacer for the nose of the torque converter due to the thickness of the spacer plate and longer dowel pins are a really good idea. It's not ideal in many ways, but does work.
I don't know if the flexplate needs to be changed for LS motors. It does not need to be changed for pre LS motors.
You will need to fabricate a bracket/linkage for the TV cable on the 2004R, else you won't make it around the block without smoking the transmission.
All that said, my opinion is that you'll be farther ahead to convert to a 4L60E and sell the 2004R.
