[SpeedyPat]

Hey how far can you bore on a stock block safely if your going to boost 15lbs. I wanna go 88 mm but i'm trying to decide if thats a good idea with an unsleeved block. Anyone got any ideas?

 

[jon v]

i wouln't bore it any more than neccisary to fit your new pistons in... The boost is gonna make the power. A little extra on the bore is not gonna get you much, your better off going as small as possible and hope it last longer while still giving you room to rebuild and bore the block again if you need to...

 

[SpeedyPat]

i've already bored it .020 over and now i need to do it again cause i destroyed my pistons so i want to go 88mm but i don't know if thats a safe idea without sleeves and boost