Hi Bob,
We just took out an Engine Factory built 351 in one of the BACC members Factory Five Cobra. It was burning a quart of
oil every 200-300 miles with approx 4000 miles on it. The head bolts were tightened enough to warp the cylinders, Align hone was offset, mismatched pistons and a host of other internal issues.
I required a new block and a complete new engine that was built by one of our local guys. The Engine Factory motor was junk and displayed a total lack of engine building expertise. They would do nothing to compensate the owner.
There were some references to Roush, Keith Craft, Smedding, Southern Automotive and others in this thread, I would seek out somebody other than the Engine Factory, any of the afore mentioned engine builders would be a better place to research.
Tony R.