cam question

WARNING; The use of the Performer is a waste of your time on a 340 or larger CID engine and will cause a loss in performance. Use the Edelbrock RPM or weiand Action plus (As to keep a T-Q on top if so equiped)
On cam choice, what ever you decided to run, make it a split duration cam. IE; More exhaust duration and lift. This type of cam will add power to your engine set up with stock heads or mildly ported heads over a single pattern cam.
Hint; The lope of a cam is due to a smaller numeric centerline. 110 vs a 114. The 110 will have a chop to it. 108's and less become difficult to tune at idle.