Helped put together a vortec 350 last winter. We used an old block we had sitting around. The bottom end was pulled apart, inspected and reassembled with stock parts. Bought 'Edlebrock' aluminum heads, intake, cam and valve train. I suggest very strongly that you read and heed the instructions provided as some things are not as they use to be. Went with roller rockers which meant the push rod length changed. Read the instructions and call your manufacturer if necessary. All-in-all it went together pretty well with a little head scratching. Only issue I can remember was instructions said to use a product like RTV and not used the intake manifold gasket. Had a coolant leak near the dist. on the intake as we didn't put enought RTV at that location. Good luck

Six volt guy living in a twelve volt world