Quote:
Originally Posted by prg machine
so 1/2 ton and 3/4 ton frames were the same dimensions and material strength?
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as far as i know, the 1/2 & 3/4 trucks, blazers, & suburbans use the same thickness in the steel. 1 tons are thicker & as i said before, depending on their intended use, some had a physically taller rail. however, i don't remember the time span when gm changed the steel in their frames. i believe late 70's or early 80's.? maybe someone else here can pinpoint that for u.