Mopar Crank 3751841 Casting Number

[wwwfora]

Just wondering if anybody can pull up this casting number in any books. Can't find anything online. I'm having an engine rebuilt and this is the crank they want to use. From what I've seen it could be from a 318, and I don't think this should be used with a high performance 360 build engine with W2 Econo heads? Any suggestions?

Thanks!

 

[70aarcuda]

it is a 318 crank...will not fit 360 block..

http://www.mopar1.us/casting.html

 

[wwwfora]

Thanks buddy, it appears that the crank I was shown wasn't the one that was going to be used in my rebuild. It kinda freaked me out. Apperently, there is a slight difference between the two cranks, this casting number can be used in both 318 and 340's, but not 360's.

Thanks again!

 

[grumpuscreature]

The 318-340s used smaller main bearings than the 360.

 

[Wedgy]

I am having the same problem.
Couldn´t find anything!
Can I use the crank with light 318 rods?