I have a 2014 Silverado with a 6.2L LT1 engine swap. It is not a cheap endeavor but it’s absolutely worth it.
I blew the engine in 2021 (at 220K) and the engine went from mechanics and dealerships all over NC. Nobody could properly fix the issue so in 2024 after sitting for 3 years I decided to make it a beast as the body style is (in my opinion) the best.
2015 C7 Corvette LT1 6.2L Engine with all accessories. ECM, ECU, exhaust manifolds, intake etc. 8k miles with a video of it operating as it should. EBay is the way to go and I found a recycling company that was cheaper and higher quality than most other vendors. I’d suggest looking there. The LT1 these days is cheaper than the L86.
$6500 for the motor with shipping from Florida to NC. Hit my loading dock in phenomenal shape 3 days later and I was ready to roll.
Took it to a reputable shop and in a week it was ready. Reused the L83 oil pan, exhaust manifolds and flex plate. Everything else bolted on without too much trouble. The cost was $7500 from the shop for the whole shabang including a base tune to get it running. I ended up in total at $14K for strictly the engine swap. Does not include the $500-$800 street tune that is necessary. I had other odds and ends replaced but they were unrelated to the engine swap. If you are trying to sort a budget I’d HIGHLY recommend pulling the old motor yourself, pulling the oil pan, exhaust manifolds, and flex plate to minimize costs. Bring the necessary parts in an organized fashion and bring the old engine too in the event something else has to swap over. It’ll save you well over $1000 and the mechanic won’t have to go to war with disconnecting all of the wires.
after I drive 80k or so miles I’m going to pull it and rebuild for reliability and a little more power (DoD delete, link bar lifters, valve springs, cam etc) I hope this helps as there isn’t much online.