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It depends on alot of factors. I am looking at it from a valve overlap stand point. I can give you two examples off the top of my head because I ran both cams in the same engines. A 9.5:1 305 with headers and a decent exhaust performs better with a 218/218 @ 0.050, 0.450 lift, 106 LSA cam than it does with a 214/224 @ 0.050 .442/.465 lift, on a 112 LSA.Dual pattern cams are a crutch. Is there an example you can share of a single patter cam performing better than a dual pattern cam with the same intake lobe? I'm thinking about this from an intake lobe point of view, where the intake lobe is static between the two comparisons.
If you have cylinder heads where the exhausts flow is close 80% of of the intakes a single pattern cam is always the better choice. Head flow numbers are the first thing a cam grinder will ask for and without those numbers your pissing in the wind.Dual pattern cams are a crutch. Is there an example you can share of a single patter cam performing better than a dual pattern cam with the same intake lobe? I'm thinking about this from an intake lobe point of view, where the intake lobe is static between the two comparisons.
Yep 305 Vortec heads has that 80% I/E flow.If you have cylinder heads where the exhausts flow is close 80% of of the intakes a single pattern cam is always the better choice. Head flow numbers are the first thing a cam grinder will ask for and without those numbers your pissing in the wind.