page_title: Grumman Ag Cat
section_title: Variants
hierarchical_section_title: Grumman Ag Cat / Variants
caption_attribution_description: English: Grumman G-164 Ag-Cat registration YV117A for agricultural use in Venezuela
context_page_description: The Grumman G-164 Ag Cat is a single-engine biplane agricultural aircraft, developed by Grumman in the 1950s.
context_section_description: Ag Cat
  The basic model Ag Cat was certified with four different engines: the 220-225 hp (164-168 kW) Continental Motors radial engine, the 240 hp (179 kW) Gulf Coast W-670-240 radial engine, the 245 hp (183 kW) Jacobs L-4M or L-4MB radial engine and the 275-300 hp (205-224 kW) Jacobs R-755 radial engine. A total of 400 of this model were produced.
  Super Ag Cat A/450
  The G-164A became the main model starting with serial number 401. This model featured a 450 hp (335 kW) Pratt & Whitney R-985 radial engine along with a higher gross weight, increased fuel capacity, larger diameter wheels and improved brakes.
  Super Ag Cat A/600
  The A/600 incorporated the same improvements embodied in the A/400, but was powered by a Pratt & Whitney R-1340 radial engine of 600 hp (450 kW).
  Super Ag Cat B/450
  The B/450 improved on the "A" model by increasing the wingspan from 35 ft 11 in (10.95 m) to 42 ft 3 in (12.88 m). The  fin and rudder were enlarged and the fuselage was also lengthened. The upper wing was raised on the "B" model by 8 in (20 cm) to reduce aerodynamic interference between the wings and improve cockpit visibility.
  Super Ag Cat B/525
  The B/525 incorporated the design improvements of the B/450, but was powered by a Continental /Page R-975 engine.
  Super Ag Cat C/600
  The C/600 first flew in 1976. It is similar to the model B/450 but has its fuselage further stretched to incorporate a 500 US gal (1,892 l) agricultural hopper. The model is powered by a 600 hp (450 kW) Pratt & Whitney R-1340 radial engine.
  Turbo Ag Cat D/T
  The "D" model is similar to the C/600 but replaced the radial piston engine with a Pratt & Whitney PT6A turboprop powerplant of 680 shp (507 kW).
  Turbo Ag Cat D/ST
  The D/ST model is identical to the Turbo Ag Cat D/T, but the engine was a Pratt & Whitney PT6A turboprop powerplant of 750 shp (559 kW).
  Turbo Ag Cat D/SST
  The D/SST model is identical to the Turbo Ag Cat D/T, but is powered by a Pratt & Whitney PT6A turboprop powerplant of 850 shp (634 kW).
  Ag Cat B-Plus/600
  Introduced in 1982 the B-Plus/600 is powered by a Pratt & Whitney R-1340 of 600 hp (450 kW). It has the larger hopper of the "C" model.
  Ag Cat B-Plus/450
  Also made available for the first time in 1982 the lowered powered B-Plus/450 is powered by a Pratt & Whitney R-985 of 450 hp (335 kW). This model was available only as a custom order.
  Marsh G-164 C-T Turbo Cat
  This aftermarket conversion was created by re-engining the Super Ag Cat C/600 with a Garrett TPE331-1-101 turboprop, de-rated to 600 hp (450 kW).
  Mid-Continent King Cat
  This aftermarket conversion of the Super Ag Cat C/600 replaced the 600 hp (450 kW) Pratt & Whitney R-1340 engine with a Wright R-1820-202A radial engine that produces 1,200 hp (895 kW).
  Twin Cat
  Aftermarket conversion by Twin Cat Corporation, replacing the R-1340 by two 360 hp (270 kW) Avco Lycoming TIO-540-J flat-six engines, close mounted to the sides of the forward fuselage. Prototype conversion flew in 1979, with conversion kits on sale from 1980.
  Ethiopian Airlines Eshet
  License-built Ag-Cat Super B Turbine with local content from 1986.
caption: A Grumman G-164 Ag-Cat for agricultural use in Venezuela
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