400 SBC Crank Casting #

RACR 73s

PROUD TO BE AN AMERICAN
I have a 400 crank with these #
GM 24N
3851528
K105
I was told it was the crank that "back in the day" all the late model guys used. I am going to use it in a UMP Street Stock engine but can only find one casting # for the 400 crank...3951529.
~Thanks~
 
I just looked and I have two 400 Chevy cranks sitting here and one of them is a 529D. The other one is a 529 and according to the Clevite bearing book there are three 400 cranks, a 528, a 529 and a 529D. As far as I know there are no differences in materials or strength in any factory 400 crank and any of them should work fine in your application.
 




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