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.
4.060"
Bore it .030 over. A 350 has a 4 inch bore. When you go .030 over, the cid., becomes 355.
4.040"
Depending on the piston type you are running, you would bore .030, .060, .090. Or, .020, .040. At .030, you come out to 355. So, at .060, 360.
No. The bore size is different between a 305 and 350. The 350 bore size is larger.
Its a 355 cubic inch
Most builders feel it shouldn't be bored over 4.065".
4"
4"
4"
The Bore of a 350 cid engine is 4.00, the stroke is 3.48 inch..
A 383 Chevy is a 350 block with a 400 crank bored .030 over. If it's not bored oversize it's a 377 (Not the only way to make a 377). If it's .060 over, it's a 388. Most builders agree that you cannot safely bore a 350 block .090 over, but if you did the resulting engine would be about 394.