1987 c10 manual 4 spd.. factory trans? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

07-07-2015, 07:11 PM

#17

1976gmc20

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Join Date: May 2015

Location: Montana

Posts: 3,696

Re: 1987 c10 manual 4 spd.. factory trans?

Quote:

Originally Posted by TwoFiftyShifter

I've owned 3 SM465 equipped trucks. An 80 K10 with 2.73s, and 87 V20 with 3.42s and my current 84 K10 with 3.08s. The fuel economy seems to be just fine, maybe better than a TH350 even. The gears are gapped pretty fierce, though.

I've had two 4x4 Chevy pickups with the TH350, and they both got horrible gas mileage

I think the automatic sucks about 35% of your horsepower. The four speed pickups have been much snappier and better gas mileage.

__________________
Current/past Chevy/GMC trucks:
1958 Chevy C-60; 1965 GMC C-50; 1965 Chevy C-10; 1971 Chevy K-10; 1973 Chevy K-20; 1976 GMC C-20; 1977 Chevy C-10 Suburban; 1980 Chevy K-10; 1989 Chevy K1500; 1991 GMC V1500 Suburban; 2016 Chevy K2500 HD

Other vehicles: 1988 Jeep XJ; 2011 Toyota 4Runner

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