LSCustoms the bang for the buck power does not end at the engine nor is it everything to consider with regards to a swap. (as I am sure you already know) In a swap the cost and ease or work involved in getting it in their and the builders skills and familiarness with it and working with the trans and everything else comes into play. GBODYLS3 states his is a money pit. Most of his goals proabably could have been accomplished another way cheaper and easier with an older powerplant so yes & no with regards to the bang for the buck thing with regards to the ls motors in a Gbody. That said a 4.8 with twins sounds fun. 🙂
As far as some of you who like to see different between the frame rails check out my photos. Surprising almost anything is on the shelf at the local parts stores belts water pumps plugs etc. power tour no worries. Plus amid the sea of belly button sbcs in everything at every car show and cruise in I have yet to see another 500 Caddy in a gbody. Not that they are not out there but far and few between. Stone reliable streetable 500HP 600TQ on pump premium is do able for far less the you can buy a 502 502 full crate although no warranty and some work and time required.
As far as some of you who like to see different between the frame rails check out my photos. Surprising almost anything is on the shelf at the local parts stores belts water pumps plugs etc. power tour no worries. Plus amid the sea of belly button sbcs in everything at every car show and cruise in I have yet to see another 500 Caddy in a gbody. Not that they are not out there but far and few between. Stone reliable streetable 500HP 600TQ on pump premium is do able for far less the you can buy a 502 502 full crate although no warranty and some work and time required.