Typically if the motor has been bored the top of the replacement pistons will have it stamped on top of them. for example if bored 0.30 over this will be on the top of the pistons.
The Bore of a 350 cid engine is 4.00, the stroke is 3.48 inch..
4"
Primarily the bore size. The 305 has a bore of 3.74 and the 350 is a 4.0 bore. They share the same stroke on the crank. And no, you can't bore a 305 to a 4.0 bore.
3.48 inches.
You can bore a 350 .090 over, but the thing is the bore is so big that the cylinder walls are about a hair line thickness apart. In order for the engine to accept the bore and punishment of the shear power, the 350 Block must be casted with extra carbon to strengthen the block.
No more then 0.060 and then it starts trying to RUN HOT on you.
4.040". The standard bore is 4.00".
No. There isn't enough material in a 305 to bore that far oversize without hitting water.
Subtract 305 from 350 and that will give you the difference (or interval) between the two numbers:- the answer is 45. However, if you mean what is the difference between a Chevy 305 and a Chevy 350, then it is the difference between the engine bore (the cylinder) sizes. The 305 bore is 3.740 inches. And the 350 bore is 4.000 inches, giving the Chevy 350 20HP more then the Chevy 305.
No, you silly goose, the 2.3 liter 140 CI ford engine has a bore diameter of 3.78" and the Chevy 350 has a bore diameter of 4.0 inches... :)
You can't... There's not enough steel in the cylinders to bore it that far. If you want a 454, you need to by a big block 454 Chevy engine.
Go to a local machine shop that does engine work. They will explain the procedure for boring an engine in detail. This is where you will have to go to get your engine bored.