The oil capacity for the Yamaha Big Bear 400 is 3.2 quarts. It is recommended you use 10w30 oil in the Big Bear.
22.9 HP
The stock 400 Big Block was actually a 402 and they had 2 engines in 1972, one had 210 HP and the other had 240 HP.
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211 hp
460 horsepower
150 horsepower
Mind 95 guess ring time .been setting up could it be stuck
400 cu in RB V8, 200 hp (149 kW) net
The name says it all at 400. From there you tune to a wide range if you wanted. This would be for mileage or light duty drive lines and such. But they advertised the big number at 400.
yamalube 10w30
Basically, it was the engine which was replaced by the N14. It was all mechanical, displaced 14 liters, and was available from the factory which horsepower ratings from 250 - 400 horsepower (hence the 400 in the instance you mentioned). The BCIV is also known as the N855.