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looks nice how much hp will a fully ported intake gain over a non-ported on indy 360-1s?



Not really much to be found in "porting" a 4150 flange ICH intake, as long as the port match & runners are right, the big power gains are found when converting it to a Dominator plenum VS running a Dominator on a 2" adapter on the 4150 plenum. Really all depends on the combination... but normally I see gains in the 15-25 HP range eliminating the adapter & converting the intake properly.