[Mark O'Neal]

Originally Posted by flatred46

Thanks for all the great info, My next question , Can you really tell the diff erance between the two motors, and What type of heads would you use on a 331? I am looking for a good street motor.

You guys have been very helpful, and thanks for the great responses

Phil

There's a minor difference in H/P and a noticeable increase in torque (all else being equal).