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.
it has 3.5
Depends on the cam.
without swaping heads or getting head work done your looking at approximatly 400 hp depending on the cam and intake and carb match.
Will this #. Carquest 85970. Fit a 400 big cam
ported heads, 4 bbl carb nice cam, and if you want to chance it stroke it, i have a little tip about strokin a 351w
From 350 to 450 depends on carb size and how big of cam u use and put headers on it and a good high rise intake and a 750 Holley to get over 400 and 400 torque Get the thinnest gaskets for those heads u can use and have them ported and polished .
cam and crank shaft
350 Chevy's have been around for 40 years, and the horsepower has varied from a low of 145 horsepower to over 400 in factory configurations. It depends on the compression ratio, type of heads, cam, intake, exhaust, and many other variables.
the car will have about 155 to 165 horsepower
Yes the cam bearings are the same.
According to the parts list, no, but they should be interchangeable. They just are built for their specific purpose.