So there is a guy selling a LS block for $180 here Houston

he says the block is bored .85mm over with new seals and all that jazz.

so my question is that if i buy 81.5mm pistons, will the pistons and rings set right? like is .35mm too much for the piston ring to expand too?

Please lmk

i wanna start my build and this block is gold for me if i can fit the pistons.

getting weisco 81.5mm pistons if that matters.

 

thats not even a real overbore... no one make 81.85mm pistons

 

well i know that lol, i was just wondering if i can use 81.5m pistons? Is that extra .35mm gonna mess up the pistons/piston rings?

 

 

it won't work... thats just simple math

 

^This!

Yeah dude, the SETUP in which you speak of is toast.

You should read up on Piston to Wall Clearance, before you start buying a block. Maybe getting a book related to Engine Blueprinting, before piles
of money and more money is just pissing out your wallet.

How do YOU know that the block is even 81.85mm ? Have you measured the piston skirt ?
Zero it out on a dial bore gauge ? Measured the cylinders WITH the Dial Bore Gauge, Zero'd
out ?

 

If you buy it do it assuming you are going to be paying for a whole new bore and set of pistons.

 

no, he just reposted what he read... hasn't checked **** and probably doesn't know what he's doing based off of the questions in his post... he probably saw somebody build a motor on tv, or saw pictures on a website and figured i can do that