B bobwb Member Dec 11, 2009 199 0 16 Jul 29, 2010 #1 Jul 29, 2010 #1 mustang and fast fords magazine tested these on a 347 crate motor, they made around 100hp over the stock heads, i might consider these heads on my soon to be 347 crate motor. any one use these heads?
mustang and fast fords magazine tested these on a 347 crate motor, they made around 100hp over the stock heads, i might consider these heads on my soon to be 347 crate motor. any one use these heads?