I was hoping if anyone knows of a company that makes a/m heads for the 351M. I am looking to rebuild my motor in my 78 Bronco. I'd like to swap the OEM heads for Alum., or and a used set that will bump up horsepower and torque.
Or would it be better to keep original heads with new valves and springs and swap pistons? I saw in a earlier post that flat top pistons can make a M scream. I already have a hot cam, intake and 4bbl on motor, but I don't think motor has been really rebuilt in some time.
Thanks for any info.