dgswinger
Well-Known Member
i have a 71 360 torn down to the short block and i look at the pistons and see what i was expecting!! the supposed 71 only 360 flat top pistons!!
as i look closer thru the carbon build up i can see stampings on the tops so i cleaned one off and this is what i see 34189 25 O/S and a large T that is just randomly stamped on the pistons in different locations. i cleaned several of them off and they are all marked with the same numbers. i dont have a bore gauge or i would measure the bore i am thinking that this motor was bored from the factory .025 if anyone has any info on these markings that would be great!!! thanks in advance!! i have a few pics but they arent great from my phone take a look and let me know what you think the 34189 25 is really small so its hard to see on a pic.
as i look closer thru the carbon build up i can see stampings on the tops so i cleaned one off and this is what i see 34189 25 O/S and a large T that is just randomly stamped on the pistons in different locations. i cleaned several of them off and they are all marked with the same numbers. i dont have a bore gauge or i would measure the bore i am thinking that this motor was bored from the factory .025 if anyone has any info on these markings that would be great!!! thanks in advance!! i have a few pics but they arent great from my phone take a look and let me know what you think the 34189 25 is really small so its hard to see on a pic.