Action Plus vs ......... any gains?

chrispy1971gtx said

Mopar Small-Block Intake Manifold Flow Test

I'd say thats a pretty good running duster with that gear and stock trans, and stock long block. The intake you mentioned is very similar to the old LD340 intake manifold, which is the King of SB intakes, next to the Eldebrock RPM these days. I remember reading that the RPM design basically matches the performance of the LD340.

Click to expand...

yeah, I thought about opening up the ports like the article states. Mine has bigger than 318, but maybe a little smaller than the 360 size. I don't really buy into the idea of the stealth intake being "off idle to 6800 rpms" or whatever. Something will give, and I bet it's the off idle. My 60 ft. was 2.04, and I don't want to loose any off of that. I know if I added headers and better gears, the car might appreciate the RPM. I'm curious in it's current state if the intake swap would help?