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Old 05-17-2019, 10:54 AM   #13
1976gmc20
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Join Date: May 2015
Location: Montana
Posts: 3,696
Re: bad fuel delivery 77 c20 dual tanks

Quote:
Originally Posted by Dead Parrot View Post
The OEM selector valve had short lifespans. 3 or 4 years if you were lucky. The Pollak valves usually last for decades. Uses the same wire and hoses.
I bought a brand new 1973 with factory dual tanks, and the switch/valve worked fine right up until I traded it for a 1980.

Only reason I traded it was to go from an automatic to a manual transmission.
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Current/past Chevy/GMC trucks:
1958 Chevy C-60; 1965 GMC C-50; 1965 Chevy C-10; 1971 Chevy K-10; 1973 Chevy K-20; 1976 GMC C-20; 1977 Chevy C-10 Suburban; 1980 Chevy K-10; 1989 Chevy K1500; 1991 GMC V1500 Suburban; 2016 Chevy K2500 HD

Other vehicles: 1988 Jeep XJ; 2011 Toyota 4Runner
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