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Re: 67-72 C/K/T-40's-90's!
Quote:
Originally Posted by C10 - C90 Bill
Bob,
What can you tell us about the 4-53 in these Medium Duty trucks. I believe the only year was '79. Wondering why it was such a short production option.
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Saw a few of those noisy things back in the day! The 4-53T was available in the medium duty C series starting in early 1978, first diesels in these trucks since the 478 Turbium (Toroflow) in 1974. The 4-53T was replaced by the Detroit 8.2L in early 1980, so they were around about 2 years total. My guess was the 4-53T was a stop-gap to get a diesel in the C series mediums while the 8.2L was under development. The medium duty diesel market was starting to grow in the late 70's. 1980 also saw the introduction of the Cat 3208 and Cummins VT-225 powered TopKick and Kodiak, which were heavier duty mediums.
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1967 GMC CM-2500 Camper Cruiser, 351E V-6, NP 435 4 speed, Dana 60, and factory A/C. 2012 GMC K-3500 WT regular cab, 6.0L Vortec, 6L90.
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