Quote:
Originally Posted by L89 chevelle
Bigger intake lobe ( more dur. @ .050 ) then the exhaust.
ex: 250in @ .050
240ex @ .050
108 l/s
This is more common on blower engines but I see some nat asp engines running them also with restricted exhaust systems.
ex: google cam specs for a 95 LT-1 engine. GM used 12* less exhaust lobe then intake lobe.
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Psss - it's all (well mostly all) to do with fuel economy and clean air --
DV