Q: Can you put 305 heads on a 400 sbc that has been bored 040 over?

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If my math is correct , almost 410 cubic inches ( using a 4 inch bore and a 4 inch stroke that has been bored out .040 )

333

302

That would be called a Chevy 307 bored .40 over.

408

4.040". The standard bore is 4.00".

It's a 327 with cylinders bored .040" over stock.

4 to 8 degrees before top dead center

Here's quick easy and simple answer 350ci is the total volume of all eight individual cylinders of the engine in cubic inches added together 350ci divided by 8 = 43.75ci volume per cylinder bored .040 over which means forty thousands of an inch overbore means that you enlarged the entire bore from top to bottom by forty thousands of an inch over it's entire circumference the reason it is done is because the cylinders have worn to the point that even with new piston rings the tolerances would be out of factory specs. so you bore it out .040 then you have to buy new .040 over pistons and rings then do everything else you need to do to put the engine back together and you have a Chevy 350 bored .040

How much hp should I get out of my Chevy 350 bored .040 with six inch rods shaved block and heads. I'm running a 500 500 lift cam with 106 degrees of lobe separation

The 351M/400 engines have "thin wall" castings and can not be safely over-bored beyond .040". This is probably the only real drawback.

A 350 bored .040 is a 357http://users.erols.com/srweiss/calcci.htmThis will help you properly calculate CID.If you are using a different crank, rods, you are creating different values that need to be taken into account to be calculated - so notate all of that stuff and do you math correctly the first time or you could run into problems.