# Lycoming O-480 > Mediated Wiki article. Canonical URL: https://mediated.wiki/source/Lycoming_O-480 > Markdown URL: https://mediated.wiki/source/Lycoming_O-480.md > Source: https://en.wikipedia.org/wiki/Lycoming_O-480 > Source revision: 1348628169 > License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) Family of aircraft engines GO-480 Lycoming GO-480-B1 on display at the Deutsches Museum Flugwerft Schleissheim Type Piston aero-engine National origin United States Manufacturer Lycoming Engines First run 1953 Major applications Dornier Do 27 Helio Courier Utva 66 Manufactured 1954–1986 out of production Developed from Lycoming O-320 The **Lycoming GO-480** is a family of six-[cylinder](/source/Cylinder_(engine)), [horizontally opposed](/source/Flat_engine) [fixed-wing aircraft](/source/Fixed-wing_aircraft) engines of 479.6 cubic inch (7.86 L) displacement, made by [Lycoming Engines](/source/Lycoming_Engines). The engine is a six-cylinder version of the four-cylinder [Lycoming O-320](/source/Lycoming_O-320). ## Design and development GO-480 series engines are installed on a number of different aircraft types.[1] Their main competitive engines are the [Continental IO-520](/source/Continental_IO-520) and [IO-550](/source/Continental_IO-550) series. ## Variants All engines have an additional prefix preceding the *480* to indicate the specific configuration of the engine. Although the series is known as the "O-480", there are only geared engines in the series.[2][3] There are also numerous engine suffixes, denoting different accessories such as different manufacturers' carburetors, or different [magnetos](/source/Ignition_magneto). **GO-480** - Normally aspirated **O**pposed engine, equipped with a [carburetor](/source/Carburetor) and **G**earbox at the front end of the crankshaft to drive the propeller at a lower RPM than the engine.[1] **GSO-480** - [**S**upercharger](/source/Supercharger) driven by the engine, gearbox to drive propeller, and equipped with a carburetor. Designated the **O-480-1** by the US military.[1] **IGSO-480** - Supercharger driven by the engine, gearbox to drive propeller, with [fuel injection](/source/Fuel_injection). Designated the **O-480-3** by the US military.[1] **IGO-480** - Gearbox to drive propeller, normally aspirated with fuel injection.[1] ## Applications - [Aero Commander 560, 560A, 560E and 680, 680E and the pressurized 720 Alti-Cruiser](/source/Aero_Commander_500_family). - [Aermacchi AM3CM (Bosbok)](/source/Aermacchi_AM.3) - [Beechcraft Twin Bonanza](/source/Beechcraft_Twin_Bonanza) - [Beechcraft Queen Air](/source/Beechcraft_Queen_Air) - [Dornier Do 27](/source/Dornier_Do_27) - [Fuji KM-2](/source/Fuji_KM-2) - [Fuji T-3](/source/Fuji_T-3) - [Helio Courier](/source/Helio_Courier) - [Pilatus PC-6 Porter](/source/Pilatus_PC-6_Porter) - [Soko J-20 Kraguj](/source/Soko_J-20_Kraguj) - [Temco 58](/source/Temco_58) - [Utva 66](/source/Utva_66) ## Specifications (GSO-480-A1A6) *Data from* *FAA Type Certificate.*[3] ### General characteristics - **Type:** Six-cylinder air-cooled geared supercharged [horizontally opposed engine](/source/Flat_engine) - **[Bore](/source/Bore_(engine)):** 5.125 in (130 mm) - **[Stroke](/source/Stroke_(engine)):** 3.875 in (98 mm) - **[Displacement](/source/Engine_displacement):** 479.6 in3 (7.86 L) - **[Dry weight](/source/Dry_weight):** 498 lb dry (226 kg) ### Components - **[Valvetrain](/source/Valvetrain):** Two [overhead valves](/source/Overhead_valve) per cylinder - **[Supercharger](/source/Supercharger):** 11.27:1 ratio, providing 48" Hg (1.6 atm / 8.8 psi) manifold pressure at sea level at maximum power - **Fuel type:** 100 [octane rating](/source/Octane_rating) [gasoline](/source/Gasoline) - **Cooling system:** Air-cooled - **[Reduction gear](/source/Propeller_speed_reduction_unit):** 77:120 (.642:1) ### Performance - **Power output:** 340 hp at 3,400 rpm at sea level - **[Compression ratio](/source/Compression_ratio):** 7.3:1 ## See also **Comparable engines** - [Continental O-470](/source/Continental_O-470) **Related lists** - [List of aircraft engines](/source/List_of_aircraft_engines) ## References Wikimedia Commons has media related to [Lycoming O-480](https://commons.wikimedia.org/wiki/Category:Lycoming_O-480). 1. ^ [***a***](#cite_ref-L2_1-0) [***b***](#cite_ref-L2_1-1) [***c***](#cite_ref-L2_1-2) [***d***](#cite_ref-L2_1-3) [***e***](#cite_ref-L2_1-4) [Page listing all variants of the Lycoming O-480 series.](https://archive.today/20121220014221/http://home.comcast.net/~aeroengine/Lycoming2.html) Retrieved on 10 January 2009. 1. **[^](#cite_ref-TC275_2-0)** [FAA GO-480 Series Type Certificate.](http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/0af77afe525ae7868525670e00537965/$FILE/E-275.pdf) Retrieved on 10 January 2009. 1. ^ [***a***](#cite_ref-TC284_3-0) [***b***](#cite_ref-TC284_3-1) [FAA Lycoming GSO-480 Series Type Certificate.](http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/f5a16a0263d426ff8525670e0053b056/$FILE/E-284.pdf) Retrieved on 10 January 2009. v t e Lycoming aircraft engines Opposed piston engines O-145 O-233 IO-233 O-235 O-290 O-320 O-340 O-360 (O-360 variants) IO-390 O-435 O-480 O-540 TIO-541 GSO-580 IO-580 IO-720 O-1230 Radial engines and H engines R-680 XR-7755 XH-2470 Aircraft diesel engines DEL-120 Turbofans PLF1 ALF 502/YF102 LF 507 Turboprops/Turboshafts AGT1500 LTS101/LTP101 T53 T55 Aero-derivative marine gas turbines TF-40 Joint development Avco (Lycoming)/Pratt & Whitney: T800-APW (Turboshaft) See also AlliedSignal Aerospace/Honeywell Aerospace v t e United States military piston aircraft engine designation system H (four-bank H-configuration inline) H-1640 XH-2240 XH-2470 XH-2600 XH-3130 XH-3730 H-4070 IV (inverted-V inline) IV-1430 IV-2040 IV-2220 L (single-bank inline) L-330 L-365 L-375 L-390 L-410 L-440 L-510 L-825 O (opposed) O-15 O-40 O-45 O-90 O-100 O-145 O-150 O-170 O-175 O-180 O-190 O-200 (C) O-200 (F) O-205 O-235 O-290 O-300 O-335 O-360 (C) O-360 (L) O-405 O-425 O-435 O-470 O-480 O-520 O-540 (F) O-540 (L) O-550 O-580 O-805 O-1230 R (radial) R-250 R-265 R-270 R-370 (LB) R-370 (K) R-420 R-440 R-500 R-540 (W) R-540 (K) R-545 R-550 R-600 R-670 R-680 R-720 R-755 R-760 R-790 R-830 R-915 R-975 DR-980 R-985 R-1044 R-1300 R-1340 R-1454 R-1510 R-1535 R-1640 R-1670 R-1690 R-1740 R-1750 R-1820 R-1830 R-1860 R-2000 R-2060 R-2160 R-2180 R-2600 R-2800 R-3350 R-4090 R-4360 R-7755 V (upright-V inline) V-720 V-1150 V-1237 V-1400 V-1440 V-1460 V-1510 V-1560 V-1570 V-1650 (P) V-1710 V-1950 V-3420 V (inverted-V inline) V-770 V-1650 (L) VG (inverted-V inline) VG-1410 W (three-bank W-configuration inline) W-2779 See also: X-1800 US military gas turbine aeroengines Piston engine configurations --- Adapted from the Wikipedia article [Lycoming O-480](https://en.wikipedia.org/wiki/Lycoming_O-480) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Lycoming_O-480?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.