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Old 02-08-2006, 07:56 PM
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Rhansen Rhansen is offline
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10 deg. initial and 18 mech. will only give 28 at WOT. I'm sure your motor could handle 36 (or more) at WOT. This would mean setting initial at 18 (unless your mechanical adv. is adjustable) and having up to 46 while cruising. I used to run 16 initial with 20 mech and 10 vac on a mild SBC (~285 hp) no problems. I ran the vac adv on full manifold instead of ported so it would see 26 deg. at idle. It saw better mpg and eliminated a "flat spot" in the throttle transition switching from the ported source to full manifold vac.
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