[MARKDTN]

If the motor is out, I would go through it-at least a little. By a cheapie rebuild kit from Northern Auto Parts. Pull it all the way down. Get a little bigger cam. Clean it all up and get all the gunk out. Check clearances on the rods and mains. Hone it and put it back together. New rings and bearings. Might even splurge and have the block tanked and put the new cam bearings. That will buy you a couple years maybe.

Or buy a used 96-99 Vortec motor and get the intake for it and run that awhile as somebody else suggested. Probably cheaper, quicker, and give you more power than what you have.