Street strip 440 w/ iron heads, stock rod arp bolts, stock forged crank, and kb184 hyper piston which weigh in a 765g (piston weight only), machine shop balance job (I dont have any of the balance spec with me). Got curious the other day about compression ratios so I tore my motor down and did some measureing and calcing and figured I was around 8.5 to 1 , yuck. So I decided to order a new set of 10 to 1 flat tops and install my new eddy heads! More vroom vroom for my new clutch install which might lead to my new cam going in also but back to the issues. KB237 pistons (770g) fit the bill and are within 5 grams each on the pistons.

Question is will 5 grams a piston heavier throw off the balance in my motor severly? Or am I within the a balance margin of error? Can I just assemble the pistons and go or do I need to weigh and remove weight to keep balance?