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.
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.
A typical bore size for a Chevy 350 engine is 4.000 inches. A bore measurement of "sixty over" indicates that the bore has been increased by 0.060 inches, resulting in a final bore size of 4.060 inches. This modification is common in engine rebuilds to increase displacement and improve performance.
Most builders feel it shouldn't be bored over 4.065".
Its a 355 cubic inch
4"
4"
4"
The Bore of a 350 cid engine is 4.00, the stroke is 3.48 inch..
4.00 bore 3.48 stroke