· #11 · mar 21, 2008. How much hp gain bored 30 over have? Web a 383 stroker has a 0.030 over bore of the stock 350, giving you 4.030 as a bore diameter. How do you show 30 percent of 350? Not too sure that the crack would work the block would have to be modified. 30% of 350= 30% *. Web a stock pontiac 350 is really 354, but was also called a 355 for some reason, bore it out.030 and it's 359,.060 over and it's 365 which fits a 366 max cubes class i'm. This results in more power without needing to purchase a. It means that the cylindar has been bored 0.030 or 0.060 over size in inches. On a 305 not really worth spending too much.
That implies that the cylinders have been. This results in more power without needing to purchase a. A 347 is a 3.4 stroke and a 4.030 bore (.030 overbore). Web expressed as a percentage, 30/350 x 100 = 8.571428 recurring (that is, 8.571428571428.) percent. When a block has been bored. Web a stock pontiac 350 is really 354, but was also called a 355 for some reason, bore it out.030 and it's 359,.060 over and it's 365 which fits a 366 max cubes class i'm. Web a 383 stroker has a 0.030 over bore of the stock 350, giving you 4.030 as a bore diameter. It's doubtful any of us need to be reminded that more cubes means a stouter engine, but it's been some 35 years since gm made the 400. Web what does bored 60 over mean? Web bored.30 over = 310 cubic inches. 030 over it usually means it’s been rebuilt once, but not always.
