this block is a GM goodwrench block that was made in 1992. unknown miles, only thing wrong with it before it was torn appart partialy and let be in the weather was a busted piston skirt. it uses the one peice pan gasket but is a two peice rear main seal. standard bore and would be a GREAT engine to build up for a mouse motor. i just need to get rid of the parts i have sitting around. i will include a ton of brackets, extra power steering pumps, water pumps, pullys and other odds and ends with it. it has an RV cam in it, with no miles, but as you can see the weather has gotten to it. it will need torn down and rebuilt, but the surface rust could be taken down off the cam and it could be re-used with new lifters. aluminum timing cover included. delivery is availible for a cost.