I've searched but I havn't found what I'm looking for...What all would I need to convert a 99-02 v6 auto truck to a v8 truck? will i need to change motor mounts and cross member and rear end? I know the 4.8/5.3 to 5.7/ 6.0 swap is easier but what all is needed when starting with a v6 truck?

 

done it and its a pain in the ***. i used v6 mounts but better to use v8 and brackets to crossmember they just go in opposite sides. using v6 mounts motor is pushed back couple inches so driveshaft is shortened. got a painless harness and 02 ecu to run motor and original harness and ecu to run stock gauges. also rebuilt v6 trans with some v8 components. its an 06 truck with a 6.0 and 5.3 heads cammed and stalled. runs good but wasnt fun swap. was done year and half ago.

 

http://www.ls1truck.com/forums/mecha...gine-swap.html

and your welcome