Guy's,
Been talking with a top notch head manufacturer to make a new head for these engines. The easiest way to a good running 250-292 is a good head.
From building many heads, I have found that much money, time and labor is taken to get a good running head. If you pay someone to do the modifications, guides, seats, valve enlargements ect. Machine work alone can be 500.00.
Upon checking with them, a nicely designed aluminum head can be made and can be offered for almost the same as a fully machined and ported head.

The new head design will allow the use of a stock type intake and exhaust. It will also have raised ports with divided runners ( 12 port) with flow out of the box around 240-250 cfm. The chamber will be a modern quench type design to allow for a more efficient burn. Stock type valvetrain and cover will be used.

So what this will do is be a bolt on part that will:
-be lighter
-produce 20-40 hp and tq more than stock out of box.
-be more efficient
-cost about the same as worked over cast iron head.


What do you think of this?

Who would be interested in one? PM's please

Do you think it is a viable product to produce?

You can also email me direct Tom@12bolt.com


Inliner Member 1716
65 Chevelle Wagon and 41 Hudson Pickup
Information and parts www.12bolt.com