Quote:
Originally Posted by Rick Parker
I've never heard of a typical inline valve head and their various chamber designs benifiting from anything less than 34 degrees, regardless of stroke or bore. When a Yates type canted valve C-3 head is being used with thier shallow tight chambers and dished pistons much less timing lead is required they are MUCH more efficient.
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Spent the better part of a day on the dyno with the engine,we tried a lot of things.......when all was said and done,we tried total timing in 2 degree increments from 26 total to 34 total degrees.......best numbers were on the runs set at 30 degrees total timing,regardless of the jetting and carb spacers we tried.......the dyno doesn't lie......
As Brent said, a lot of factors go into determining how much total timing any engine will need to make the best power.......
David