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Pontiac1976 · 06-04-2018, 12:29 PM

Your 77 should have the tank on the right for a single tank.
The tank from the 83 if single tank will be on the Left. (should be ok)
There is too size tanks small 16GAL & large 20GAL ( trucks ).
You do have to watch out tanks on the same side as the one you have as
sending unit will point in the wrong way once put on other side. ( if you get lucky to get replacement tank with universal mounting sender your ok.
73-78 single tank truck factory mount on right side. Can be used on the other side must run new line or extra longer rubber hose because the sender points wrong way.
79-86 single tank truck factory mount on left side. Can be used on the other side must run new line or extra longer rubber hose because the sender points wrong way. ( 87 carb )

06-04-2018, 12:29 PM	#4
Pontiac1976 Registered User Join Date: Oct 2015 Location: Ottawa, Ontario, Canada Posts: 780	Re: Fuel tank compatability Your 77 should have the tank on the right for a single tank. The tank from the 83 if single tank will be on the Left. (should be ok) There is too size tanks small 16GAL & large 20GAL ( trucks ). You do have to watch out tanks on the same side as the one you have as sending unit will point in the wrong way once put on other side. ( if you get lucky to get replacement tank with universal mounting sender your ok. 73-78 single tank truck factory mount on right side. Can be used on the other side must run new line or extra longer rubber hose because the sender points wrong way. 79-86 single tank truck factory mount on left side. Can be used on the other side must run new line or extra longer rubber hose because the sender points wrong way. ( 87 carb ) __________________ 1977 REG cab Long Bed with a 1984 Front Clip, 82 305 .60 over 9.0.1 flat top pistons, 4bbl, TH350, w/84 SS-intake & cam , w/ 1977 big block rad, 1975 gear box, 1984 master w/ metric fittings top & SAE fitting @ portion block, 1975 3.42 gear open diff. Duel 77-87 Factory air cleaner, duel inlet from rad support . Down sized 9' to new 8' Steel flat bed Was a 77 454 w/308 gear. Taken out 550 lbs. up front with motor clip change.