This engine may be married to ether a single prop or Duoprop sterndrive lower unit. Power steering is fitted as standard for handling ease.

We have tested about 20 boats with this engine ranging from 21' (6.4 m) to 35' (10.68 m) in both single and twin installations. The 5.7 Gi has 14% more displacement than the 5.0 L engine and produces 11% more horsepower in the GiE and GiCE 5.7 L models. (The 5.7L GXiE engine produces 18.5% more horsepower than the 5.0 L engine.)

Speed and fuel consumption for this engine based on one of our tests of a boat powered by a 5.7 L Gi engine had a WOT speed of 52.3 mph in a 3400-lb. (1542-kg.) sportboat measuring 21' x 8'6" x 34" (6.4 x 2.5 x .86 m). This boat had a best cruise speed of 28 knots getting 3.38 statute miles per gallon.

In one twin engine test in a 13,600-lb (6,168-kg.) boat measuring 35'2" x 11'4" x 35" (10.7 x 3.4 x .88 m) the vessel had a top speed of 45.2 mph (at 5000 rpm); a best cruise speed of 29.8 mph at 3500 rpm getting 1.3 statute mile per gallon when powered by 5.7 L Gi engines.

Power steering and trim are standard and they are available with SX or DP drives.