How to ID a forged vs cast crank

[jasonglh]

How can you tell the difference ?

[BLUEBALL]

there is a line that goes the length of the crank. a wide line is forged and a real thin line is cast. or check casting numbers

[jasonglh]

I think this one has a like a 1/2" line.

The numbers on it are 6163 and 1AB

Hey an easy way is to stand it up on it's end and tap it with a screw driver and if it rings then it's steel. It has a nice ring.

[BLUEBALL]

yes,if its got a flash line approx 1/2 inch,its forged "thumbs up

[glhsken]

Counter weights on a cast will be bumpy on the sides Like any casting, The steel crank, you WILL see the machhine marks plainly