So Sorry ... but this too shall pass
CS:
Rare / Bud is absolutely right on all counts. I'm sure you're pretty down right now ... I have several T shirts much like yours ... try a calm approach and DO ensure that a trusted & experienced mechanic performs your motor's diagnosis. But even a novice can rebuild a motor if one pays attention to detail, reads and follows written instructions ... and simply ask for help here at CACC. Maybe the motor's not toast after all ... could be something much less serious. Dropping the oil pan and close inspection of lower end & piston skirts & bores & oil pickup screen ... and looking at condition of both oil and coolant can usually either confirm or deny many of your fears. Again, if it's toast ... don't jump the gun ... think ... you can be up and running with a reliable used 350 motor for under $1000 ... even if someone else does the R&R. If possible, don't be quite so quick to sell ... 'specially if ain't running. God is often with me ... I broke a wp belt on a 350 in middle of HOT, humid summer day here in SC ... motor got hotter'n heck ... drove it on another 10 miles at 30-40 mph ... had blown out all but about a quart of water ... the steam might've rivaled Yosemite's geysers ... IT LOOKED BAD! Simply let her cool down ... replaced the belt & refilled water. Drove her for months thereafter with NO problem. When I eventually tore down for rebuild (unrelated to the overheating), the 30-year old block and heads were not warped at all, head gaskets were still sealing perfectly ... no decking or shaving needed or done! Also, the standard cylinder bores were amazingly straight and had little wear ... I did rebore to .030 over but only to tighten ... not to straighten the bores. All motors have limits of abuse ... but iron block-iron head 350's & 305's (like yours) are pretty darn resilient. So ... a major overheat and steam/water blowout is not ALWAYS certain to require an overhaul or replacement. However, if it has blown a head gasket or cracked a head ... you might very well need no more than a gasket ... or another rebuilt head ... stock 350 heads are cheap to buy & rebuild. Very careful removal of a head & its gasket can permit an experienced auto machine shop guy to inspect them and tell you if the head gasket is/was blown and/or head itself is bad/cracked. And ... don't cut 'n run 'cause your baby's broke ... Many here at CACC'll be happy to advise/help you. Sleep on it and good luck. Remember ..."this too shall pass."
JACK:gap