Anybody?

 

Been awhile here also. Drop the oil pan and pressurize the cooling system. Can come from the sides of the block from the head/block seals, front of the engine from a plugged water pump weep hole, also down the inside of the flywheel housing from the air compressor. Also from the injector cups under the rocker covers. And of course the oddball thing of a cracked block alongside the liner.

 

Thanks for the response. I think for $1,500 I'll go look at the truck. Heck, I'd most likely get that for crushing if too much to repair. I have a lead on a running '74 CO7040B with 238 detroit for $3,500. I just love the sound of the detroits. Growing up, my dad ran a mobile feed mill with a 4-71 power unit and that sound is forever engraved in my head jelly. I'm trying to find an old truck to haul my Corvairs to car shows for cheap.