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.
BORE is 3.740 and the stroke is 3.480
No. The bore size is different between a 305 and 350. The 350 bore size is larger.
The bore and stroke is---3.740 bore and 3.480 stroke. STOCK 305
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. There isn't enough material in a 305 to bore that far oversize without hitting water.
NO The bore and stroke is different.
No. You would need to bore the block to 4 inches, which is too much for a 305.
A 305 chevy engine has a bore diameter of 3.736". Check the diameter of your L2256 piston to see if it is that size.
a Chevy 350 crank is a Chevy 305 crank. they have the same stroke, 3.48 inches, and are interchangable. swapping between the two cranks does not change the engines displacement
I have an 84 305 and everything says 45, and uses r45ts plugs
3.740 x 3.480 / inches. Stock factory bore.
the fireing order for a Chevy 305 is 18436572 with #1 being the drivers side plug closest to the radiator.
Check the head casting numbers and reference a book that details what casting belongs to what. The best way to tell is measure the cylinder bore. Chevy 350 has a 4.00 inch bore, whereas the 305 has a 3.736 inch bore. You can't tell from the crank, they have the same crank with the same 3.480 inch stroke.
any Chevy 305 block can be safely bored .060 over. if you have a good block, with thicker cylinder walls, it might be .080 borable.
The bore and piston size are the only real difference between the two.The 350 has a bigger bore and piston and so puts out more horsepower, the305 = 3.75" bore and the 350 = 4" bore. Both have the same stroke.Also the starters are different because of the smaller flywheel but other wise the external parts are interchangeable.
A 305 had a 3.75 bore with 3.48 stroke. Adding .030 to the bore and using the formula pi times the radius squared times the stroke times the number of cylinders equals 312.
the biggest difference is obviously the stroke and bore of the engine and the size of the engine
Hi It should be close to 3.75. A 350 eng. is 4.0 inchs. Hope that helped?
More then likely it is a 305