So, I'm new here, go easy on me...lol I just replaced my 305 in my 87 Silverado with a stock 350. Everything is good with the engine. I'm now chasing some chirps, some minor knocking, mainly when I accelerate. Idles like a boss sounds very smooth. All the rockers were set after engine was put in. I have a video where you can hear it, hopefully I can upload. Thanks for any advice. Can't upload the video.