Editing Ferrari Colombo engine (section)

==Four-cam==
The Colombo V12 was substantially reworked for 1967's [[Ferrari 275#Four-cam models|275 GTB/4]]. It still used two valves per cylinder, but [[dual overhead cam]]s were now used as well. In a departure from previous Ferrari designs, the valve angle was reduced three degrees to 54° for a more-compact head. The dual camshafts also allowed the valves to be aligned "correctly" (perpendicular to the camshaft) instead of offset as in [[SOHC]] Ferraris. It was a dry-sump design with a huge {{cvt|16|L|USqt|0}} capacity. The engine retained the bore and stroke dimensions of the 275 model for {{cvt|3286|cc|L CID|1}} of displacement. Output was {{cvt|330|PS|hp kW|0}} at 8000&nbsp;rpm and {{cvt|240|lbft|0}} of [[Torque#Machine torque|torque]] at 6000&nbsp;rpm with six 40 DCN 9 Weber carburetors.