Piston marking question ?

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what did it start out as? it really depends on the block. .060 over is the most i care to see, even then it still comes down to what you want to do with the motor. are you just rebuilding it and fixing something in the piston walls, or are you going to try and fully build the motor? fully built on a motor bored over .060 can get a little explody if you go too far. generally speaking .060 over is ok as long as you are gentle with it

It's originally 4.36" bore. I'm going to build it up with aftermarket pistons & rods, raise the cr to 10.5:1 with a heads swap, oversized cam(matching the 10.5:1 cr), etc. bottomline, I'm aiming at 500+ hp.

DAILY DRIVER.

496 is .060 over with a 4.25 stroke crank. Very popular combo.

http://www.superchev...ld/viewall.html

Yes it is, but I'm not making it a stroker engine, I'm going with the stock 3.85" stroke, besides daily will murder my wallet.

Do you need a the extra .03 bore? Is it that worn again?

Piston #8 broke & it was a big chunk, so I thought I'd bore it again just in case.

find out from a good engine builder what block you have because i have seen some rare big blocks that can be bored a 100 over and still be strong

I know it's a d8te block, 2 bolt main(prefer 4, but gotta work with I got)...I have read about engines being bored .1 over & run strong.

yes it sounds like your block has been bored all ready , i would ask a good machine shop or 2 or 3 just how far you can go with the block in question just to make sure things don't get too thin .

There's not many reliable shops around my area, but from the people I've asked that build performance engines & from what I've read, .060 would pretty much be my limit.

Not too worried about running hot since the cooling system will be upgraded. I'm also scared of pulling a block out from the scrapyard getting a bad block & just waste money.