I would say no more than 2 to 3 hundred. I paid 200 for mine and it had a spun bearing in the connecting rod to cylinder 1. Block is good, but it required a full rebuild. Luckily I had a spare 350 laying around. Since I bought it, I replaced the clutch, replaced both headlights, put a stereo in it, amp and woofer, tach, cluster glass, cluster lighting, wiper switch, heater blower motor, alignment, tire rotation, swapped the back glass for split window, battery, battery wiring, headache rack, spot lights (mounted and wired) ignition cylinder lock, adjusted idle, flushed the front and rear differential, filled the tcase and flushed the transmission, cleaned the bead surfaces on all 4 rims, installed the cb, bed rail protectors, door seals, lightly detailed interior, wiring trailer brakes, front bumper, and swapped out door locks. I still have to replace the front output shaft seal on the tcase, and measure the yoke for a speedy sleeve. Im down to the almost nothing left except body work which I also have primed, I just need to paint the fenders, hood, cab visor, grille, and grile trim. Then its on to the cab, doors, bed and bumper. It helps that I mechanic for a local dealership. The point is, I still have a mountain of work ahead of me to get this truck running really good and looking really good. This is just so you know the kinds of problems your going to run into that will require eventual attention that will be a more expensive investment than your getting yourself into. If you have the time money and know how to take on a project like that, then more power to ya. But sometimes you get what you pay for. The only reason I took on this project is cause I have a love for restoring old chevy trucks.