Re: GMC’s 1960 V-6-powered trucks were the original professional grade
Quote:
Originally Posted by Jim A
Great article, I always like to read good things about my truck of fifty years.
It is a little hard to believe, however, that the cooling system pumps 141 gallons per minute. That seems exaggerated.
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That 141 GPM is definitely exaggerated. The original brochures I have from the 1960s say that the flow rate was only 135 GPM at 3400 RPM. 
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Ed Snyder
Medford, Oregon
1962 1000 Pickup 401M & Muncie 318 with overdrive
1962 K1000 Suburban 401M & SM420
1965 2500 Suburban 351C & SM420 with Watson overdrive
1967 CM1500 pickup 351E & NP435
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