Quote:
Originally Posted by celentanogj
The car is street driven-no track - the bottom end is going to be basically stock with the original crank and rods with just a cleanup on the bores, the cam will be a roller. I would like to get around 500+ hp on the dyno. The machinast told me he has a set of Shelby aluminum heads, I don't know yet what he wants for them but looking at the price of the Shelby heads I can get a set of TFS heads for almost half the price. Also I have the Harland&Sharp roller rockers on my 428 and planning to buy that setup for the 427.
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A good set of medium riser heads (with an appropriate cam selection) will provide excellent bottom-end torque, and it would be very hard for them not to make well in excess of 500 HP with a 427 cubic inch displacement. 550 to 600 would be more likely.
The BBM head is made in Korea at the aluminum foundry of a large Korean auto manufacturer. They employ the same if not better, foundry practices and capabilities that Detroit does — which means high quality, low porosity castings.
The BBM head also uses a modern combustion chamber shape/design that unshrouds the intake valve to help performance.
I don't think there is a bad head out there, although some castings can have porosity issues. The BBM head choice is a good casting with a good design and excellent power-producing characteristics virtually across the board. It sounds like you will not be doing things like porting, etc. That makes a head like the BBM head increasingly attractive because it works very well right out of the box.