? about my pistons

i thought i had aries pistons but they are venolia. im trying to figure my compression. the only thing i can find is venolia 435. does someone know the specs on these pistons? nothing comes up when i do a google search. also are these venolias allrite? thanks jim

here is a number to that co. ....there web page looks out dated so hopefully there number is still good

http://www.venolia.com/pistons.html

I have dealt w/Venolia in the past,and they have always been quite helpful