My reference to a 66% dwell angle is simply a rule of thumb to get an engine running close to right if a definite specification isn't readily available. Whenever using an exact spec. is possible, by all means do so. Since most 216 and 235 distributors will interchange (even if the gear material isn't right) it's hard to know which spec. to use unless you research the part number of whatever distributor you have.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
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