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Performance Bulletin


Engine: Yamaha XF425XSA / XF425USA / LXF425XSA
Boat: Grady White 370 Express
Configuration: Triple
Test Date: 20-Mar-2019
Grady White® - Grady White 370 Express

Performance Bulletin

69 - Grady White 370 Express

Grady White 370 Express

Length 36' 7"
Beam 13' 2"
Dry Weight (Boat Mfr. Pub) 15,224 lbs
Maximum HP 1,275 hp
Fuel Capacity 344 gal
Weight as Tested 20,595 lbs

XF425XSA / XF425USA / LXF425XSA

Horsepower 425 hp
Induction DI/VCT/DOHC
Displacement 5.6L
Weight (Estimated) 952 - 977 - 952 lbs
Gear Ratio 1.79:1

Engine Mounting Height

Mounting Hole Position #3

Propeller(s)

Series XTO Offshore
Diameter x Pitch 16-3/8 x 21
Yamaha Part # 6GR-45976-00-00 / 6GS-45976-00-00
Propeller Material Polished Stainless Steel

Test Conditions

Number of People 3
Air / Water Temperature (Fahrenheit) 63° F / 63° F
Elevation (in feet above sea level) 0'
Wind Velocity 10-15 MPH

Comments

Test weight includes 172 gallons of fuel, 4 batteries, 2 people and 30 lbs of safety gear on board.

YPB#: PB_GRW_370_EXPRESS_TRI_XF425XSA_03-21-2019_OCC

Grady White® - Grady White 370 Express

Performance Bulletin


Engine: Yamaha XF425XSA / XF425USA / LXF425XSA
Boat: Grady White 370 Express
Configuration: Triple
Test Date: 20-Mar-2019
XF425XSA / XF425USA / LXF425XSA

Performance Data

RPM
MPH
GPH
MPG
1000 6.8 5.6 1.21
1500 9.2 8.2 1.12
2000 11.1 13.1 0.85
2500 15.7 19.7 0.80
3000 22.4 26.4 0.85
3500 31.2 34.7 0.90
4000 37.2 46.0 0.81
4500 42.0 61.4 0.68
5000 47.8 80.2 0.60
5500 52.8 104.1 0.51
6000 58.4 115.7 0.50

0-30 MPH: 8.44 seconds

Notice To Consumer The information and data contained in this Performance Bulletin is approximate and subject to many different factors and variables. It is provided as a guideline only and should not be relied upon as representative of actual performance. Your boat’s performance may be different than the information contained in this Performance Bulletin due to various factors, including your boat’s actual weight, wind and water conditions, temperature, humidity, elevation, bottom paint, boat options affecting wind/water drag and/or boat weight, and operator ability. Please confirm the specifications and performance data on your specific boat/engine combination with your dealer prior to purchase. Please also keep in mind that the data contained in this Performance Bulletin may or may not have been performed using Yamaha PowerMatched components. Yamaha reserves the right to change the specifications and performance data of this Performance Bulletin or engine without notice. This document contains many of Yamaha’s valuable trademarks. It may also contain trademarks belonging to other companies. Any references to other companies or their products are for identification purposes only, and are not intended to be an endorsement.