340 compression ratio

Yeah garage here isn't attached to house and have a 220v milk house heater. It takes a while to warm up. 8" of snow projected this weekend :BangHead::bs_flag:
Mine isn’t attached either. It’s a concrete slab with a glorified carport metal building on it. I’ve put some insulation board in there and use a kerosene blow torch that’s pretty loud. About 6” of snow here and teen. I hate it.