Quote: I don't think it is running out of fuel. If it was bad enough that it won't pull in first then it would be completely gasping in second and never make Drive. Starts, shifts and drives well. Even grabs second every now and again. Less than 500 miles on build. Just no seat in pants pull at all. Much weaker in second..
Did they cut the heads when they rebuilt it? If so, how much? Unknown.. Adjustable rockers? Stock Rockers If it still has stock rockers and the heads are cut a bunch it could be pumping up the lifters and floating the valves slightly. While we are on the subject of valve train, was the cam degreed? I doubt the cam was degreed. I will try to find out.
What does it have for compression pressure? Unknown
Also I would pull the pan and see how far off the bottom of the pan the pickup is. They don't rattle for no reason. I don;t know what happened. I thought the motor was gone. It has a windage tray. Straight line accel and about 4700 loud knocking. Limped home. Shut down. Restart later. No noise??
