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Re: Origin of the "Heavy" Half-Ton?
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Originally Posted by GMC Jim
per '71 TruckService manual...RPO G50 increased rear axle capacity from 2500 to 3221 lbs. RPO G50 also included H78-15B upgrade from G78-15B tires.
(RPO = Regular Production Option; if I recall correctly )
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Yup,there were heavier suspension options.Just no Heavy Half designation whatsoever.It`s just a case of something coming along later,then people looking back inaccurately.BobB nailed it.It was an emmissions thing.Catilytic Cans started in`75 on cars and under 7,000# trucks.The last of the OBS diesel Suburban 8-luggerss were badged 1500,some kinda emmission/weight class game.
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Tim
"Don't call me a redneck. I'm a rough cut country gentleman"
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