best head for 1972 chevy

11-11-2009, 11:59 AM

From working and flow testing all of them back to back. All of the casting can flow exactly the same when the same work, valves and valve jobs are used. The smaller exhaust ports make more power. The 487X works better with larger cubic inch motors (350 and above). I hope this helps.

Best Regards,

Chris Hardy
chrishardy@racingenginetechnologies.com
231-773-7252

11-11-2009, 11:59 AM	#6
Chris Hardy Guest Posts: n/a	Re: best head for 1972 chevy From working and flow testing all of them back to back. All of the casting can flow exactly the same when the same work, valves and valve jobs are used. The smaller exhaust ports make more power. The 487X works better with larger cubic inch motors (350 and above). I hope this helps. Best Regards, Chris Hardy chrishardy@racingenginetechnologies.com 231-773-7252