WHO DID NOT read the 200 LBS differance between IRON FE MOTOR and alum sHELBY MOTOR. THE wieght would be 150 lbs on a 427 motor with alum intake period verses the Shelby motor.
Evan H Tony Feils is a good GM machinist. I think he was into CHEVYS back in his hay day. I know he did a couple of Fords too. That was not his strong point. The best machinist on the East Coast is CHARLEY WESTON in Piscataway period. He as computor CNC machines that can cut .00001 He never advertises. He does more PRO STOCK motors than anything else now. Evan if you break or window an Alumium motor it can be welding and be used again. An iron motor can be welded but most crack again after 10-20 heat cycles. 50/50 wieght depended on wieght of driver and gallons of gas in the tank. 42 gallon tank holds 330 lbs of fuel. Next time we meet you will have to show me these new 81/2-9 out of 10 rods. How did you lose a 11/2 point?

I know you are from jersey, no doubt about it

The old SOHC FE motor was good for 1500 hp before the heads would lift and the blocks would crack. Shelby motor is good for 2200 hp and is being tested on the salt flat by Mike Lefevers. It's twin turbo intercooled. Alumium motors run 1 point higher because of poor heat control. Iron heads will always make better power. My motor is stamped CSX 52 on the bottom of the
oil pan rail Sounds like a shelby part to me, just like frames and bodys, but these can be cut off and put on other cars with no questions. I think Shelby daytona fits this bill. He sold his first due to money problems. You read about the big block cobras having 428 motors not 427's. I guess that means that all 428 are not real cobras either. ONe more point Have you seen the inside of a shebly block, the webbing is twice as strong, the head studs pull from the bottom of the block not the cylinders, I have double steel main caps not iron ones oiling bores are bigger. Why don't you go look on the shelby web for some pictures and compare to your motor if you where ever inside it.

I looked for a good 427 motor, I found everything from thin cylinders, cracked blocks,welded blocks,sleeves in blocks, and the list went on. This is why Shebly was smart enought to start building motors again. I got a great idea, Evan next car you buy that needs a motor, buy a DOVE or Genisis motor. They are making both iron and alumium motors and give it to Tony and watch him laugh at you.

Rick Lake