Losi 454 Engine with Combo Pull/Spin Start This is the Losi 454 Engine with Combo Pull/Spin Start.Features:Fits all existing big-block applications and is easy to adapt to other modelsDesigned to produce unbeatable low-end torque as well as high-rev horsepower for high-speed actionOffers the convenience of a dual Pull Start/Spin Start backplateLosis 454 Engine was engineered and designed to produce unbeatable low end torque as well as high-rev horsepower for