This is the first of our series of blogs on the differences between each of the Gulfstream models. Over the next few weeks, we’ll break down each and every Gulfstream model and the differences between them. We’ll start with the G300, G400, G350 and G450, each of which is based on the G-IV and is equipped with Rolls-Royce Tay MK 611 engines, though some tweaks were made for the G350 and G450.
G400
The G400 was the first of the four models, its name coming into existence as a redesignation of the GIV-SP in 2003. The G400 has a range of 4,166 nautical miles, a normal cruise speed of 464 knots, a climb rate of 3,640 feet per minute, and requires 5,558 feet to takeoff and 3,374 to land. Earlier models of the G-IVSP were fitted with Honeywell’s SPZ 8000 avionics package, but each of the G400s come equipped with Honeywell’s SPZ 8400 avionics package.
G300
Next, Gulfstream created a shorter-range version of the G400, dubbed the G300, with about 1,100 fewer gallons of fuel. The G300 is powered by the same Tay MK 611-8 engines as the G400. The G300 has a range of 3,820 nautical miles and a normal cruise speed of 464 knots. Its fuel reduction gives it an improved climb rate of 3,805 feet per minute and better takeoff performance, requires 5,558 feet to takeoff and 3,374 feet to land. The G300 comes equipped with the same SPZ 8400 avionics system found on the G400.
G450
After the G300 and G400, Gulfstream created the G450 and G350, which both come equipped with tweaked Rolls-Royce Tay MK 611-8C engines. The C engines are more efficient than the original Tay MK 611-8 engines found on the G300 and G400, burning about 20 fewer gallons of fuel per hour. Compared to the G400, the G450’s fuselage was lengthened by a foot, sharing the forward fuselage and larger cockpit of the G550. The G450 also comes equipped with the Honeywell Primus Epic avionics system with PlaneView, FADEC, redesigned thrust reversers, nacelles and pylons which increase range and payload, as well as some aerodynamic improvements. It has a range of about 4,328 nautical miles, a climb rate of 3,760 feet per minute, a cruise speed of 464 knots, requires 5,626 feet to takeoff and 3,374 feet to land.
G350
The shorter-range version of the G450, the G350, is powered by the same two Tay MK 611-8C engines and shares all of the performance and cockpit upgrades, but has room for about 3,500 fewer pounds of fuel, giving it a range that’s more than 400 nautical miles shorter than the G450’s at 3,900 nautical miles. It has a cruise speed of 464 knots, a climb rate of 3,960 feet per minute, requires 4,938 feet to takeoff and 3,374 to land.
[ulp id=’BE6pmlq8yQI913DS’]
