r/ChevyTrucks

1988 k1500 5.7 L v8. i got the truck a few months ago. all stock and old from setting. i gone to look at it a month before i got it. and i had him turn it over 1 turn to make sure nothing was locked up. the following month i had it towed to my house. and changed the oil. i gone to start it up. and it is locked up. i checked the starter. no problem. i took off the belt and pulled the spark plugs. put it in neutral and tried to hand turn it from the flywheel. { wont turn } i used seafoam and desal fuel and poured it into the sparkplug holes. let it set for 3 days. nothing. still locked up. i tapped on the rocker arms to make sure they where not stock. sprayed them down. still locked up........

at the moment i am preparing to strip the engine down. but before i do so. if you all got some other ideals on what i can do please let me know. i am trying to avoid removing the heads.

all i know about this truck is <he said she said>. it ran and was parked there and sat there for a few years. engine ran fine before that. no rust. we do not rust much here. but engine was dirty with old dried up oil and under the valve cover is old dried up oil also.