5.3/4l80e help

[68c10airstream]

Hi Russell, i haven't paid a lot of attention on the 4l80 swap, but one item that i remember is a possible lack of room in the floor tunnel area. The trucks have a low hump and a high or tall hump. I believe the truck guys bolt in the high hump for the bigger 4l80. I assume the blazer has a removable trans hump. I'm running the factory low hump in my 68c10 with a 4l60 and its ok, close enough though. Great help on here, and some guys are modifying the stock tank for a add-0n low sump well area as a pick-up point for an external fuel pump i believe. Good luck, Brian Fuller