New motor blues. Truck is a '79 Originally 400/350/203,w/31's. 400 was WORN OUT, just flat worn out. Burned so much oil that I kept 5qt jugs handy. The rest leaked out. SOOOOOOOOOOOOOOO...... Got a new 350 crate motor (12499529 - 350/290 HP) & an Edelbrock performer 3701. 2.5" hi flow cat/muffler/pipe. Single exhaust. Still using the rebuilt qjet from the old motor, but the part number from 'parts is parts' lists for both 350/400 motors. Trans/xfer case rebuilt too. Broken in now w/550 or so miles. Base timing @ 12*btdc. Good low end power, no trouble through 40-50 mph. Just don't try to climb a hill at 55 or better in 3rd. It takes 2nd to make any speed on that hill. Is this just that %^# heavy???