If you take the best factory man motor every produced, the GM 454, and bore it .060 over you get 468 cubic inches of big block power. This overbore is incredibly common, and even if you had a block that would clean up with a .030 overbore, you probably would still go to .060 just because. If you want more than 468 cubic inches, the next fun logical step is to swap in a stroker crankshaft that goes from the stock 4.0 inch stroke to 4.25 inches. This quarter inch of stroke, when combined with the .060 overbore will result in 496 excellent inches of big block Chevrolet. (Editors Note: Every time I say, or read, Big Block Chevrolet the announcer voice in side my head makes it sound ultra bad ass. Just saying.)
Many people argue that if you have an average high mileage big block 454 and are going to have to have the crank ground, the rods reconditioned, and buy a set of pistons anyway to do a rebuild, then you might as well spend a few dollars more and just buy a stroker kit and be done with it. There is some logic here depending on the condition of your engine. But what does Richard Holdener think?
Here’s the description from this latest video:
BBC BUILDS-SHOULD YOU GO BIGGER? 468 VERSUS 496 BUILDS-WHO DID IT BEST? CHECK OUT THIS VIDEO COMPARING MODIFIED A MODIFIED 468 BUILD TO A MODIFIED 496 BUILD? DOES IT MAKE SENSE TO ASSEMBLE A 468 WHEN FOR A FEW BUCKS MORE YOU CAN DO A 496? BUT HOW MUCH MORE POWER IS THE EXTRA DISPLACEMENT WORTH? IS A 496 THAT MUCH BETTER THAN A 468? WHAT ABOUT A SIMPLE, JUNKYARD 454? WHAT DOES THAT MAKE? IT’S ALL HERE!
Holdener+BBC FTW!
I wasn;t going to say anything but, If he wanted to make a good comparison he should have used the same heads, cam, intake and carb on both engines. What he did is of no use at all.