| Maker | Wright GR1820- G105A | Wright R1820- G2 | Wright R1820- G3 | Wright R1820- G3B< /td> | Wright R1820- G5 | Wright R1820- F52 | Wright R1820- F53 |
| Arrangement | Radial | Radial | Radial | Radial | Radial | Radial | Radial |
| Cooling | Air | Air | Air | Air | Air | Air | Air |
| No of Cyls | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
| Bore/Stroke | 6.125" x 6.875" | 6.125" x 6.875" | 6.125" x 6.875" | 6.125" x 6.875" | 6.125" x 6.875" | 6.125" x 6.875" | 6.125" x 6.875" |
| Displacement | 1823 cu ins | 1823 cu ins | 1823 cu ins | 1823 cu ins | 1823 cu ins | 1823 cu ins | 1823 cu ins |
| Comp Ratio | 6.3:1 | 6.45:1 | 6.45:1 | 6.2:1 | 6.45:1 | 6.4:1 | 6.4:1 |
| bmep Cruise | 143 | 137 | 137 | 137 | 137 | 126 | 126 |
| Blower ratio | 7.14:1 | 7:1 | 8.31:1 | 8.31:1 | 7.14:1 | 7:1 | 8.31:1 |
| Cyl Material | Steel | Steel | Steel | Steel | Steel | Steel | Steel |
| Valves per cyl | 1 Inl 1 Exh | 1 Inl 1 Exh | 1 Inl 1 Exh | 1 Inl 1 Exh | 1 Inl 1 Exh | 1 Inl 1 Exh | 1 Inl 1 Exh |
| Valve Arr. | OHV | OHV | OHV | OHV | OHV | OHV | OHV |
| HP max - not Take-Off | 900 | 850 | 840 | 820 | 800 | 775 | 745 |
| @ RPM | 2300 | 2100 | 2100 | 2100 | 2100 | 2100 | 2100 |
| @ Altitude | 6700ft | 5800ft | 8700ft | 8800ft | 6000ft | 5800ft | 9600ft |
| HP Take-Off | 1100 | 1000 | 875 | 900 | 1000 | 890 | 785 |
| @ RPM | 2350 | 2200 | 2200 | 2350 | 2200 | 2200 | 2200 |
| HP Cruise | 625 | 600 | 600 | 600 | 600 | 550 | 550 |
| @ RPM | 1900 | 1900 | 1900 | 1900 | 1900 | 1900 | 1900 |
| Fuel Octane | 90 | 90 | 90 | 90 | 90 | 90 | 90 |
| Prop Drive | Geared | Direct | Direct | Direct | Direct | Direct | Direct |
| Dry Weight | 1272 lbs | 1103 lbs | 1103 lbs | 1103 lbs | 1115 lbs | 1000 lbs | 1000 lbs |
| lb/Cruise HP | 2.04 | 1.84 | 1.84 | 1.84 | 1.86 | 1.82 | 1.82 |
| Carb(s) | 1x Stromberg or Chandler-Evans | 1x Stromberg or C-E | 1x Stromberg or C-E | 1x Stromberg or C-E | 1x Stromberg or C-E | 1x Stromberg or C-E | 1x Stromberg or C-E |
| Ignition | Scintilla Mag(2) | Scintilla Mag(2) | Scintilla Mag(2) | Scintilla Mag(2) | Scintilla Mag(2) | Scintilla Mag(2) | Scintilla Mag(2) |
| Electric Starter | Optional | Optional | Optional | Optional | Optional | Optional | Optional |
| Length | 48.125" | 43.25" | 43.25" | 43.25" | 43.25" | 43.375" | 43.375" |
| Height/O.D. | 55.109" | 54.25" | 54.25" | 54.25" | 54.25" | 54.09" | 54.09" |
| Width | NA | NA | NA | NA | NA | NA | NA |
| Ht above bed | NA | NA | NA | NA | NA | NA | NA |
| Mount Dia | 23.375" | 23.375" | 23.375" | 23.375" | 23.375" | 23.375" | 23.375" |