Guys do you know if Chevy cast dates on there crankshafts at the foundry? I have a BB crank and it looks like a raised letter 69 near the top of the front throw? Did they do this?
I don't know. All I ever look for is the casting number. A date on a crankshaft is not important to me.
but important to me fella.
Why? When is the last time you had to pull the pan at a show to have them verify the crankshaft was correctly dated for your car?
It may have a casting date if it is a cast crank. See this link for where to look.
http://www.chevytech.com/2c50o6.html
Some may have a forging date, but I am not sure on that.
Quote from: bcmiller on March 18, 2012, 07:53:37 PM
Some may have a forging date, but I am not sure on that.
Forgings weren't dated, although many had a code adjacent to the forging number that identified the set of forging dies used to make the part.
Thanks for clarifying that John.
This looks like a date to me.(http://thumb17.webshots.net/t/90/90/8/22/28/2631822280107397037hzbfiz_th.jpg) (http://rides.webshots.com/photo/2631822280107397037hzbfiz)
Quote from: z10kl on March 24, 2012, 05:19:58 PM
This looks like a date to me.
Yes, it is - that's a cast crank.
My bad. I thought he was asking about big block cranks in general.