Quote:
Originally Posted by hans2
Performer RPM is an excellent manifold, but not my first choice for a stock 350 rebuild. Plenum volume and runner cross section are both a bit on the large side for that application. You'll notice a slight decrease in off-idle torque compared to either the stock iron or Performer (2101) manifold, but possibly slightly more power in the mid-upper rpm ranges.
With stock internals, the stock iron unit is pretty tough to beat, but a 2101 Performer can give it a little bump in the midrange without sacrificing power down low.
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I want to get to 400+ HP. It’s really hard not knowing which way to go. I should probably just buy a kit for the top end and be done with it.