Can anyone tell me what my 305 became (in cubic inches) when I bored it .060 over?

 

311 or 312 I think.

 

Does anyone know for sure

 

316 cubes. To find the cubic inches of the engine, multiply bore/2 squared, times 3.14, times number of cylinders, times stroke. For you, that works out to be 3.74" + .060" bore, 3.48" stroke, 8 cylinders. works for any engine. roughly speaking, .030 works out to around 5-6 cubes in the range of 300-450 ci engines, and .060 works out to be 12-14 cubes. hope that helps.

 

I think I got 314.9 when I typed it in Desktop dyno. I just rounded it off to 315 and call mine that.

 

i thought you couldnt bore out a 305 because the cylinder walls are too thin......must be wrong

 

.060's kinda pushing it. Any bigger and you might as well sleeve it and call it a 350 I bought a rebuilt motor and found this out when I pulled the heads.

 

is there any way you can tell if a motor has been bored? when they rebuild one, do they always bore it out?

 

yeah...you can measure the bore.

Also the pistons will have the over bore size stamped onto them, .030 etc.

Most people/shops will have the engine bored whenever it is rebuilt.

 

thanks, so what would be my cid now, 355?

 

Yes.

 

thanks.