I need some help. I want to build a new engine or probably buy one already assembled for a twin turbo application and would like to have this next specs on my new engine; 4 bolt mains, roller cam and one piece rear main seal. I already have a T56 and I would like to know if the T56 will fit right into a two piece rear main seal engine block. If not what are the parts necessary to make this kind of swap. 4 bolt main/roller cam/one piece rear main seal blocks are kind of rare and difficult to find, or perhaps I am looking in the wrong places. I would want to build a Dart little M block with the T56, but I dont know if this is possible. In resume I would like to know if its possible to swap a T56 into a two piece rear main seal engine block, and if it's, what are the parts needed.
Any help will be greatly appreciated

 

If you go with a 2pc rear main all you have to change is the flywheel.

I don't know the part # right off but CenterForce makes the one you need as I'm sure a few others do also.

 

You need a Centerforce 700107 flywheel. The stock T-56 bell housing, hydraulics, shifter, etc. will all work. You'll need to adapt the crossmember somehow. I'd suggest an aftermarket torque arm specifically designed for the swap, such as the Spohn one.

 

Ok,
I already had this tranny previously installed in a 87 GTA with 350 one piece rear main seal I use to have, it was running great.
So what you guys are telling me is that the current T56 93-97 flywheel that I have and used before in the 87 GTA, wont work with the new two piece rear main seal engine block that I want to build, and that I have to change that flywheel for a Centerforce 700107 flywheel or simmilar and that new flywheel will fit this two piece rear main seal engine block with the T56?
Sorry, but I just want to be sure I understand.

 

Sounds like you've got it.