340 piston I'd question

[FlamesAreWicked]

3751841 cast into crank
I belive that means CAST

According to this site mopar casting numbers

Take it for what it’s worth, by that number it’s an 80s 318 cast crankshaft.. same stroke as a 340 obviously. I compared the numbers on my 71 340 and it came up as a 68-72 forged steel.

 

[nutz]

I need to look at my forged crank for #s

 

[nutz]

Ill post pics of this one later

 

[nutz]

funny no line in the weight
so thinking the big plan is to build the 69 block with the steel crank
ill go threw this engine make sure it was put together right ...maybe a little lumpy cam and some basic upgrades
run the j-heads headers /have a speadbore intake /themoquad and find a clean body to drop it in (maybe 70/1/2 swinger) use all my extra parts
maybe auto