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Old 08-09-2010, 08:00 PM   #13
colo
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Join Date: Aug 2010
Location: WSP, MN
Posts: 12
Exclamation Re: Tuning Q after a tear-down ordeal...

Alright guys,

So I got back to it today with a timing light on loan from my father-in-law. This one is known to be accurate.

Sure enough, it agrees with mine. The timing mark is appearing under the water pump near the lower hose outlet. I started retarding the timing and right around an inch from where the marker plate begins it completely bogs out and dies. Probably 15-20 degrees advanced at that point.

Is there some way for me to confirm that the balancer has/hasn't shifted? I hear later engines have the two-part dampener which can degrade and rotate separate of the crank. Since the code on the block tells me it's from a '75, perhaps I am staring down an inaccurate timing mark?

I just want to be sure I'm not dropping the little/no cash I have left on a part I don't need.
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'72 Chevy C20
'75 350cid Gen 1
HEI Distributor
Edelbrock Performer 1405 600CFM
Performer RPM Air-Gap 7501 Intake
Electric Radiator Fan
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