67-72 C/K/T-40's-90's!

[ClassicTVMan1981X]

Originally Posted by Bob B.

I think the only diesel available in a 90/9500 series with the steel 'butterfly' hood was the 6-71. You would need to find a data book from '78, '79, or '80 to find out for sure as the first year for the 6-71T in those trucks was 1978. The last year the steel side opening hood and fenders were available was 1980.

Yep, 1978 was indeed the first year for the turbo inline 6-71T as well as the low-RPM 6V-92TT "Fuel Squeezer" and the Cummins Formula 290 in these. It's even mentioned in a trade brochure titled "BRUIN - CHEVY'S NEW PAPA BEAR."

~Ben