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Old November 3rd, 2020, 05:05 PM
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GMCNUT GMCNUT is offline
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Join Date: Jan 2013
Location: Arab Alabama
Truck: 60 1001 Wideside Custom BBW, 62 K1001 Wideside BBW and 1966 1001 Wideside BBW w/ Sport Trim option
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Default 1961 305A vs 305D what is the difference?

So unless I am wrong, the later version of the 305A that came in some 1/2 ton 1961 GMC's had the same WW 2bbl carb as the optional 305D offered in 1961. The 1960 version of the 305A had the Holly 1904 carb so we all know that, but what is different between the later 305A w/ WW 2bbl vs the 305D w/ same carb?

Need to know because it doesn't appear any of you have a good running 305D to sell and I do have a good running later 305A w/ same WW 2 bbl on it as the D, so maybe its the same **** thing?
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My 60-66 GMC Projects:

1960 1001 Custom Cab short wideside BBW, 305A V6, factory PB, Hood Jet, Radio and Hydramatic.

1962 K1000 4x4 short wideside, BBW, 305D w/ SM420, PTO Winch

1966 1001 Custom Cab short wideside, w/ super rare Sport Trim option interior (bucket seats)
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