Currently swapping my lt1 car over to twin turbo lsx setup and I need options / opinions. Car will be driven 90% street. I'm shooting for ~750 whp. Don't think my stock 4l60 is gonna like that! How to get the best bang for the buck tranny.

 

4l80e is the easiest and strongest go to.

 

Will a stocker hold? And how much work is it to wedge the bigger tranny in there?

 

not hard, a small cut or two depending on the year trans you go with. I would install a transgo hd2 kit at minimum and it should hold.

 

th400 with an upgraded sprag is all you'll need

 

If you like give us a call to discuss your options. A built 4l60e can handle your needs But we can discuss all options with you,