Put dial gauges on first cylinder with 276 Dbilas cam. For some reason I get peak timing 118' degrees for both IN and EX. Advertised is 108'. Basically I just clocked degrees at 1.5mm before and after max lift and split the difference. Dbilas cam card is a little limited with info. I wish the had some more info like lift at 0.050 etc.
I tried to verify duration but for some reason my numbers are way of. Not easy to duplicate. I get close to 304 on both IN and EX. I'm getting 34/90-90-34 by clocking degree wheel and dial gauge when IN/EX open and closes.
I checked Dbilas 304 cam specs and they are not even close: 47/77-77/47
I know that without lift at 0.05 is hard to verify the cam but my observations are still way of advertised 30/66-66/30 272 cam with 108' peak timing.
What gives? rocker ratio? something else is wrong?
I tried to verify duration but for some reason my numbers are way of. Not easy to duplicate. I get close to 304 on both IN and EX. I'm getting 34/90-90-34 by clocking degree wheel and dial gauge when IN/EX open and closes.
I checked Dbilas 304 cam specs and they are not even close: 47/77-77/47
I know that without lift at 0.05 is hard to verify the cam but my observations are still way of advertised 30/66-66/30 272 cam with 108' peak timing.
What gives? rocker ratio? something else is wrong?
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