Quote:
Originally Posted by my427cobra
LMH: yes, a higher flow foam in the S&H air cleaners with the perforated sides might make a difference. But the perforated metal side have only a 36% open area. A lot of restriction. The SS mesh sides have a 79% open area, and that combined with higher flow foam (30ppi) and a screened top is a BIG improvement. Effectively a 368% improvement ( and probably more due to the higher flow foam).
Cheers
Greg
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I don't have an S&H air cleaner as used on the big block to compare but I have a set for a small block with dual quads. (actually two sets) Assuming the screen is the same, the perforated steel is 3/16" holes on 1/4" staggered centers. The open area is 51%. That's on original Stelling and Hellings air cleaners, not a replication. Is that the same as used on the larger S&H air cleaner?
Larry