This part is from US Rockets
cost:
1500
mass:
2.35
category:
Engine
TechRequired:
start
engine_data:
standard
{"isp"=>{"vac"=>340.0, "atmo"=>330.0}, "propellant_ratios"=>{"LiquidFuel"=>0.9, "Oxidizer"=>1.1}, "max_thrust"=>450.0}