Best Intake for a 408

Best Intake for a 408

@12many

rumblefish360 said
@Demonx2 There was a fella here some time back that was at a similar point as yourself. His 408 was in a Starion or some weird car like that though only a little lighter. He went back and forth with the RPM-AG & the M-1 single.

His cam was right around your duration @050. The single mph was better, the ‘60 worse, a hair slower than the RPM, IIRC by tenths.

rumblefish360 said
The best dual purpose all around intake is the RPM.
Depending on the camshaft and the head flow specs, or AKA, a well ported head over a stock or mildly modified head, the single plane intake would be the better choice for the top end and probably not a loss down low ether. There could be a 40+ hp gain.

But again, how well the heads are ported and the cam being used has a ton of say in that.

My thoughts and comparison. I was remembering the 408 in the import mostly. Noting that there seems to be a point in where a single plane is better than a dual plane right around the mid to upper cam durations of 255@050 and bigger seem to be that point. A bunch also depending on build and actual car duties. Street or street strip or race car.

MOPAROFFICIAL said
Rpm/Airgap or victor340.
If you street drive or hang at/under 6000rpm, the rpm.

That ^^^^^ pretty much nailed it I think.