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Re: causes of bad MPG
Mine started getting crappy mileage and I checked the vacuum advance by sucking on the line to it and discovered ther diaphram was broken.Then when I looked in the distrib I found that the centrifical weights were all stuck too.
I replaced the whole distrib with a new HEI type and it runs great but and am SURE the mileage prob.is fixed.
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'69 GMC C2500 Custom Camper, 8 1/2' bed, New GM 350, NP 435 Close Ratio 4spd. Trans., 3.73 Dana-60 open.Camper and Trailer wiring, PS, PB, AC, tach , three gas tanks, stereo speakers, 2nd owner, Work-Truck supreme.
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