1973 gmc sierra info

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Thread: 1973 gmc sierra info

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    1973 gmc sierra info

    hey might end up with a 1973 GMC sierra but i am having a hard time finding information on that model in that particular year. Its a beautiful truck kept in great condition. Full size automatic.

    What would the gas be on that kind of truck and does anyone know where I can get some information on this model

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    6.2 Liter LS9 Supercharged V8 Jesda's Avatar
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    Re: 1973 gmc sierra info


    This is a very helpful site.

    1973 with a 350/turbo 350 will probably give you around 11 to 14 mpg with a light foot. These trucks weren't too good on gas. Best thing to do is drop in a 700R4 transmission from a later year model (started in 1983) to give you an overdrive. I get about 16 mpg combined in the heavier Suburban and sometimes up to about 18 or 19 on long highway trips.

    I love the '73 and '74 GMC. The grill is my favorite for this generation truck as well as the huge trim emblems on the front fenders. I think those had to be some of the largest emblems on any truck made.
    1968 Buick Skylark (Buick 350/4)
    1972 Chevrolet Corvette (350 LT-1)
    2001 Chevrolet Tahoe LS (5.3 liter)
    1983 Chevrolet C/10 Silverado (350 Goodwrench)

    Former: 1989 GMC Suburban R1500 (5.7 liter)
    1969 Buick Skylark Custom (Buick 350/2)
    1971 Buick Riviera (Buick 455)
    1971 Buick Electra 225 (Buick 455)

    Without Buick, GM never would have existed.

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    4.4 Liter Supercharged Northstar Premium Member smith7629's Avatar
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    Re: 1973 gmc sierra info

    I don't understand your question about "what would the gas be". Are you talking the type of gas or the gas mileage? Need some details about the engine.....size? original? what tranny?
    I wouldn't drive a '73 everyday. Even if it's nice now....it will rust away if you keep it out in the elements or wash it too much.

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