View Full Version : anyone have info on these pistons?

January 4th, 2010, 03:24 PM
I have a set of pistons minus 1 lol that we have had for a good while..but i cant get any info on them...they are arias pistons and the only number on them are 412 ss..they came out of a 355 s/s motor..but i would like to know the details on them..i tried calling arias for a couple days now and no answer and no returned phone call...so does anybody know anything about the 412ss arias piston:confused::D

January 4th, 2010, 04:35 PM
There should be another # besides the one you took off of the bottom. I deal with them on a lot of the ls1 stuff

January 4th, 2010, 05:24 PM
that number"412ss" is on the inside of the piston...cant find another number anywhere..

January 4th, 2010, 08:34 PM
if you turn the piston upside down, that # is close to the rist pin. Clean the top of and look real close

January 4th, 2010, 08:47 PM
i did..there is nothing but arias 412 ss on the piston

January 8th, 2010, 10:03 AM
almost sounds like they may have been machined down for some reason and it took the numbers off the top.

January 8th, 2010, 01:53 PM
called and talked with arias..the 412ss is a forging number for a 406 or bigger sbc

January 8th, 2010, 04:37 PM
Next question is are you gonna be able to get another one?

January 8th, 2010, 06:28 PM
That is what I was saying the other day that the 412 means nothing. that is a slug #

January 10th, 2010, 07:53 AM
Send one piston to to them and they can make another one just like it.