I received my reground camshaft from Delta and it's not the 220/220 I wanted but according to Scott the base duration for at least one of the specs was around 202 which makes the reground specs a considerable increase in duration. I told them to use their better judgement over what I requested. The first time I discussed this subject with them months ago the person I talked to did provide any recommendation leaving the cam specs up to me, I don't believe it was Scott who handle the regrind.
I entered the specs in Desktop Dyno with a comparison to the stock specs (as best they could be entered due to dynos limitations with the exh specs) and it showed almost the exact same performance installed straight up as the stock cam showed with 15 degrees of retard.
This also further adds to the question of why the measured stock cam specs here are different from what they measured, particularly since Dyno would not allow us to enter all of the exact cam specs measured by members on the forum. I didn't have a problem entering Delta's specs.
The new cam grind doesn't respond positively to retarding or advancing from 0 degrees Dyno, although Delta says it should increase power when retarded up to about 6-8 degrees. The increased duration of the regrind hasn't increased overall performance above stock either in Dyno which doesn't make sense which suggests either the stock specs are wrong and need to be reduced or the regrind will have an adverse effect. The LSA was changed from 112 to 113 and that would have an effect. I was told to expect about a 15% increase in performance.
I don't understand some entries on the spec sheet.
I entered the specs in Desktop Dyno with a comparison to the stock specs (as best they could be entered due to dynos limitations with the exh specs) and it showed almost the exact same performance installed straight up as the stock cam showed with 15 degrees of retard.
This also further adds to the question of why the measured stock cam specs here are different from what they measured, particularly since Dyno would not allow us to enter all of the exact cam specs measured by members on the forum. I didn't have a problem entering Delta's specs.
The new cam grind doesn't respond positively to retarding or advancing from 0 degrees Dyno, although Delta says it should increase power when retarded up to about 6-8 degrees. The increased duration of the regrind hasn't increased overall performance above stock either in Dyno which doesn't make sense which suggests either the stock specs are wrong and need to be reduced or the regrind will have an adverse effect. The LSA was changed from 112 to 113 and that would have an effect. I was told to expect about a 15% increase in performance.
I don't understand some entries on the spec sheet.
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