HA, so read above "So, now motor teardown for rebuild... I'm on a roll now." My roll stopped abruptly when we tore into my first motor. We should have done some more checking on the motor before doing any work to it at all. put new oil pump and screen on, put new cam in, new timing on it, then started charging the cylinders to pull the springs... Or i should say we TRIED to charge the cylinders, and couldn't get one of them to hold any air. In fact, the valves were so hung open that it was spewing RUST and **** out the intake and exhaust ports...
So, in my opinion, that motor is junk. It's the orange one in the back of the truck in the pic below. Has peanut port heads, recessed pistons, and way too big combustion chambers to make any power, to make it worth a $400 head rebuild. Piece of crap, was only supposed to be a temporary motor until i built my second one.
So, we move to the second motor, GenV truck motor. Also peanut heads, but smaller chambers, etc. We put air to each cylinder, and they are sealed up perfect, until the 8th one. Bent valve, bad. So bent i could hardly hammer it in. So, this motor also was so low power that it wasn't worth putting a $400 head job into. I was only using this one for the block originally to build up.
So back to the drawing board, i needed a motor. My buddy Byron's (ITTLFLI on here) father happens to be a great motor builder, and happened to have a motor for me that had just built and dyno'd. Even better, he offered to trade it to me for these two motors, some parts, and a little cash. So of course i jumped on it... here it is below...
GenVI 454, .030 over, roller lifters, domed pistons, oversized pushrods, 088 rect port heads, rect port alum GM intake, etc... Did 407hp and 486 lb/ft of torque on the dyno, he included the sheet with it. Should be all the motor i need.
I ordered a set of rocker studs for it so i can throw my rollers on it and had to exchange the flex plate, as they are different between MarkIV and GenVI. So, should drop it in next week, let you know how it goes.