Help identifying a few sb engine components

[ValiantOne]

Hey all,

I went a checked out some 360 parts for sale near me today. There was a magnum block, but I think the other parts were LA.

The crank had a casting # of 418640, ther was also an X and 123 on it in other places. I cannot find anything online for that #

The rods were 3418645. I did find some info on those but not what they were originally in.

Thanks for any help,

CE

 

[RustyRatRod]

The "3" often does not show up well. 3418640 is the crank casting number. 71-89 360.

mopar casting numbers

 

[magnummopar]

Unless its super cheap,it might be cheaper to get complete engine so you get all the roller cam parts and other stuff. I believe the cranks are the same but balance might be different. I can get number off magnum crank tomorrow when i open up. $400-$500 for complete good runner makes bare block, crank and rods cores in my mind...$100, maybe $150 if you know caps are marked, bore and crank stock.

 

[ValiantOne]

Unless its super cheap,it might be cheaper to get complete engine so you get all the roller cam parts and other stuff. I believe the cranks are the same but balance might be different. I can get number off magnum crank tomorrow when i open up. $400-$500 for complete good runner makes bare block, crank and rods cores in my mind...$100, maybe $150 if you know caps are marked, bore and crank stock.

Evan,

I have a plan brewing in my head, and you guys were part of that plan I won't go into all the details yet, and will start a new thread in the magnum section if I do, buuut the basic jist is this.

This block is .030 over and may have been decked too. The crank has been turned .010/.010 and obviously the project was never finished. I already have a complete 99 360 engine at home I was going to use for my magnum upgde. It has 140 to 160 k on it (one of the two and I cannot remember!!!!! Brain is gettin' soft!) Anyhow you see where I'm heading.

Got to find out what this crank is (LA or Mag / and what eng, etc) and plan from there.

Thanks

CE