Theoretically, yes.
Crankshaft thrust bearings worn / dislodged allowing crankshaft to walk back and forth. Seal is pushed out the front of engine and creates Huge oil leak. By this point, the bearings,crank , and possibly block , have be damaged.
Main bearings are between crankshaft and main journals (engine block), rod bearings are between connecting rods and crankshaft and thrust bearings ensure crankshaft does not slide horizantally between journals they hold crank in place.
It forms the 'body' of the engine - it is a lump of metal machined to take the crank shaft, oil and cooling ducts and the pistons. It is where the 'explosions' of ignited fuel are contained and turned into rotary motion.
You can buy main bearing spacers at most speed shops that will allow you to use standard 350 bearings. Use the 400 pistons on the 350 rods and the height will come out pretty good. You'll lose about 3/4 of a compression point in the destroke, so use a piston that is appropriate for what you're trying to do.
In most engines, yes only if the crank is not damaged and measures correctly.
No the diameter of the crank journals are different.
No. Crank and main bearings can be get at by dropping the oil pan, but to get to the small end rod bearings you've got to get the pistons out.
No.
Hopefully someone with the correct answer will improve this answer, but a shortblock weighs 290. That is a 350 block with crank, rods, pistons, and cam.
If you are talking about the crankshaft rod bearings, you can just remove the oil pan, and replace each crank bearing one at a time without actually removing the pistons. But to replace the piston pin rod bearings the pistons will have to be removed. IMO, if any of these bearings are worn bad enough to need replacing, then the engine needs a complete overhaul.
Absolutely. The ONLY parts that aren't interchangeable between a 2 bolt and 4 bolt block are the main bearing caps themselves. The crank, rods, pistons, camshaft, oil pump, etc, are ALL interchangeable. So yes, the pistons will work just fine.
Most people consider a short block to be a block with crank, rods, and pistons installed.
how to installed a crank
Yes you can,A 427 is a 454 block with a 3.7 stroke 396 crank and 427 pistons
As long as the 350 block is under the year 1986. Then all of the external engine parts will interchange. The heads and intake will also interchange. The CRANK AND RODS AND PISTONS WILL NO INTERCHANGE.
Main Journals
If the pistons are hitting the crankshaft, either you have1. the wrong pistons (350 pistons are relatively short butit is possible to purchase pistons with the same bore but a longer skirt... in which case they would hit the crank)or2. the wrong crankshaft with too much "throw"