This part is from Old Parts Redux
cost:
1300
mass:
1.75
category:
Engine
TechRequired:
heavyRocketry
engine_data:
standard
{"isp"=>{"vac"=>350.0, "atmo"=>90.0}, "propellant_ratios"=>{"LiquidFuel"=>0.9, "Oxidizer"=>1.1}, "max_thrust"=>250.0}