This part is from RocketMotorMenagerie
cost:
27000
mass:
1.05
TechRequired:
veryHeavyRocketry
engine_data:
lrbeEngine
{"isp"=>{"vac"=>351.0, "atmo"=>323.0}, "propellant_ratios"=>{"LqdMethane"=>3.0, "Oxidizer"=>1.0}, "max_thrust"=>610.0}
