Anyone who has ever spun a 9/16-inch wrench on a hot rod knows the engine block is where it all begins. There are lots of options available—new and used, iron and aluminum, OEM and aftermarket.
We’re going to examine a typical V8 engine block—in this case a Chevrolet Performance Bowtie iron block for big Chevy engines (part number NAL-19212195 from Summit Racing) to show you what goes into a modern engine block, and what to look for when buying a used block or getting a block prepped at the local machine shop. The information presented applies to other OE and aftermarket blocks as well.
[…] the first installment of Block Talk, we told you why a modern CNC-machined block is a great foundation for a high performance engine. […]
[…] of course, but you may only find out if/when you try to increase the bore (See photo 3 of 12):- https://www.onallcylinders.com/2013/0…-engine-block/ Reply Reply With […]
I’m confused. The BBC bore spacing is 4.84″. If you bore the cylinders out to 4.60″, the thickest the walls can be is the centerpoint of the 2 cylinders, which is 4.72″, which would make the cylinder wall thickness 0.12″, not 0.25″. Where am I going wrong?
Jon K Do your math again.One half of 4.6 is 2.3 same for the next cylinder 2.3 + 2.3 = 4.60 4.84-4.60 = .24 wall thickness between the two cylinders
Didn’t know the ,the numbers thanks a lot will try to remember thanks a lot
how much u want for that block i have a bowtie motor break a rod mess the block up need a goog use tall deck had 598 cubic in motor want to build it back please give me a call 803 565 1997 clarence mitchell or 803 774 4900 work
What to look for when buying a block v8 for my Holden ute 2007 mod start from scratch is my guess it’s my dream
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Great information but can we have more info on ‘what to look for when buying a used engine’. Also, love to read more about a long block and a short block engine. Thank You!