Hey everyone I got 350 5.7L Vortec motor out of a 96 Tahoe. The block casting number is 10243880, the head casting numbers are 10239906. It's a complete motor at the moment minus accessories, dist. cap, wires, spark plugs and exhaust manifolds. The motor was in my truck, lost oil pressure while driving and came to a stop. Not sure what is wrong with it but it is not seized. Asking for $350obo for complete motor. I can part out just the heads but it would be around same price as I have to take apart the old motor and deal with the extra parts. PM is key thanks.