LS swap into LT1 4th gen problems

[BryanL]

Haven't seen any issues with coolant leaks on the crossovers. Just O rings. Pull the intake, replace the rings and pressurize the system-you can borrow a tool for it. Then you can see whats going on better. LT1 and LS1 radiators are the interchangeable. Parts stores stock the LT since its thicker.
Underhood shots are plentiful on the net but if you need a pic I can get you one tonight. But for better advice a pic of what you are dealing with would help. What have people online done?

[Sook]

Thanks guys.

Gonna swap some new o rings tonight, hope that solves it.

It's got an aftermarket radiator, but I have a stock LT radiator at the shop. Probably will just swap it.

Pranav, thanks for the comprehensive list! the intake on orange was a cludge with the LT. I'm sure I can make it work with your parts list.