Been a while since I have done much to the truck. Got the rear half of the frame blasted and painted, axle seals replaced and getting ready to put on the brake lines, etc.

The 235 engine broke free, not sure what it was but was an easy thing by rocking the fan back and forth. Checked all the valves for proper movement, compression was around 95's, no spark. Found the new set of points wasn't making any contact on the contact itself, replaced it and got spark. Poured some fuel down carb and it started right up without hesitation and ran smoothly for maybe 5 seconds or so.

Not sure what to do next on the engine that has been sitting for 40 plus years, should I pull engine and replace rings, gaskets, etc? Oil does flow good thru the rockers and was the original oil (clean).
Is there any way to check the block for any cracks without taking to machine shop? Or should I run the engine till hot and see if anything leaks?


Thank You


1954 GMC 150-24 Truck
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