We'll I sold my ls1 76mm 71 nova back in 2005 and have missed it since so I built a 69 nova and am down to the engine. I purchased a 5.3 and 4.8 from a buddies shop for $150 4.8 spun bearing 5.3 low miles with low oil pressure(oil pump) no spun bearings or anything theyre both 24t engines.
I planned on doing the 5.3 with 4.8 flat tops 862 heads ports cleaned with stock cc and a ms3 cam so I can get a nice thump and it'll love being sprayed at the track. This is a street car full interior no cage so I want to keep the engine more mild but im really set on the ms3. Any advice and weither i'll run into ptv clearence issues or anything please lmk guys. I followed 78supersports build on his 5.3 ms3 stang and after seeing that am steering away from a efi turbo setup just to keep it simple in a old car.