Dual snorkel vs. open aircleaner.
My engine is a 455+040.
750 Q-jet, iron intake with 0.5" spacer and mild Crower HFT cam.
On a DynoDynamics chassidyno and the hood open, the engine gain 20hp switching the Dual Snorkel with 14"*2" filter to 14"*3" open filter with flat base.
The best pull was 417hp with 14"*3" open filter.
All pulls was made with open hood so in the streets it may be different.
From S.F. in Sweden.
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