Editing GMC V6 engine (section)

===305===
The {{convert|304.6|CID|L|1|adj=on}} '''305''' had a {{convert|4.25x3.58|in|mm|abbr=on}} bore and stroke.<ref>{{cite book |ref={{harvid|Motor's|1973}}|title=Motor's Truck and Diesel Repair Manual|publisher=Motor|year=1973|isbn=0-910992-16-9|edition=26|pages=852–854}}<!--General Engine Specifications table - doesn't have disp, I'm AGFing the math--></ref> The 305A was equipped with a single barrel carburetor and produced {{convert|150|hp|0|abbr=on}} [[Horsepower#SAE gross power|gross]] at 3600 RPM and {{convert|260|lbft|0|abbr=on}} gross at 1600 RPM (measured without air cleaner or accessories in an ideal environment). <!--AGF A-->The 305E was equipped with a two barrel carburetor and produced {{convert|170|hp|0|abbr=on}} [[Horsepower#SAE gross power|gross]] at 4000 RPM and {{convert|263|lbft|0|abbr=on}} gross at 1600 RPM in 1969.{{sfnp|Motor's|1973|pages=852-854}}

The 305 was GMC's standard [[Chevrolet C/K|pickup truck]] and [[GMC Suburban|Suburban]] engine from 1960 to 1969. The 305A was standard in 1000–3500 series trucks in 1960–1961 and was dropped in 1962. The 305D was an option in the 1000–3500 series in 1961 and became standard in 1962, replacing the 305A. The 305E replaced the 305D in the 1000–3500 series trucks in 1963 and was used until 1969. The 305B and 305C (a 305B with a different manifold and carburetor) were used in 4000 and 5000 series trucks; the 305B was dropped in 1962 while the 305C continued to 1974.{{sfnp|Motor's|1973|pages=848-849}}<!--model and engine table only refs 1962-1973-->