Author Topic: Crank Casting number doesn't exist?? Any Help??  (Read 16748 times)

Offline VileZambonie

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 19171
Re: Crank Casting number doesn't exist?? Any Help??
« Reply #15 on: April 18, 2008, 10:31:22 am »
Well which do you want Nodular Iron or Forged Steel?  ???

I think you are misunderstanding what the construction of these cranks are. For the most part you have one or the other. Most stock cranks are nodular iron.

Forged isn't really necessary unless you are supercharging/turbo charging/N2O etc. Or if you'll be making some serious power....
,                           ___ 
                         /  _ _ _\_
              ⌠ŻŻŻŻŻ'   [☼===☼]
              `()_);-;()_)--o--)_)

74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline Captkaos

  • OWNER and Administrator
  • Administrator
  • Senior Member
  • *****
  • Posts: 18454
    • http://www.73-87chevytrucks.com
Re: Crank Casting number doesn't exist?? Any Help??
« Reply #16 on: April 18, 2008, 10:39:12 am »
I agree with Vile, you are understanding the construction.  There are only 2 types.
From the pics you posted it looks like a stock nodular Iron crank, so if you are wanting nodular or steel, you already have one of those.

Post a pic of the parting line. (where the 2 halfs are joined) that runs down the lenght of the crankshaft.

Offline 85MudMonster

  • Frequent Member
  • **
  • Posts: 392
Re: Crank Casting number doesn't exist?? Any Help??
« Reply #17 on: April 22, 2008, 08:13:25 pm »
So your saying a cast iron crank is a nodular crank. I always thought there was a differance between the two. Well, In that case I'll just keep the one I've got I'm only trying to make 400ft/lbs of torque.
Dan

85 Chevy K10 - 408 BBC from a 71 Chevelle SS, TH350, NP208, 33" Mastercraft Courser M/T