cast or forged?

[sabre67]

Question..... can you tell from the crankshaft damper style if it has a cast or forged crank? This is the damper on a 1966 383 ...Thanks

 

[33 IMP]

Steel. No doubt in my mind.





Unless its,got the wrong damper on it, of course!

 

[sabre67]

no thats original damper

 

[Jerry Hall]

There wasn't a cast crank in 66 for any stock big block. Everything looks normal to me for a stock appearing 66 engine, other than the color and the intake.

 

[ruffcut]

forged! LOL! Its a forgery! ruffcut

 

[pnora]

Question..... can you tell from the crankshaft damper style if it has a cast or forged crank? This is the damper on a 1966 383 ...Thanks

View attachment 1492581

View attachment 1492582

To be sure one should pull the pan. All dampers will fit cast or forged cranks. Myself if I was going to run this engine I would want to verify whats inside.

 

[sabre67]

ill do that, thanks

 

[Tony Tee]

I have the same question for these motor home engines that I have. I'm hoping they are not cast cranks.

 

[33 IMP]

I have the same question for these motor home engines that I have. I'm hoping they are not cast cranks. View attachment 1573020View attachment 1573021

If I had to guess..... the 413 looks like a steel crank, with a hemi style balancer, and the 440 (a little hard to see) looks like a heavy rod steel crank, (a small amount of counterweight behind the pulley. The ridge behind the pulley would have an oblong shape, not round)
If they were cast , I think the balancer would have a bigger, more obvious counterweight, and added weight on the converter/flywheel.

 

[Tony Tee]

If I had to guess..... the 413 looks like a steel crank, with a hemi style balancer, and the 440 (a little hard to see) looks like a heavy rod steel crank, (a small amount of counterweight behind the pulley.
If they were cast , I think the balancer would have a bigger, more obvious counterweight, and added weight on the converter/flywheel.

33 IMP, Thanks! But zoom in on the 440 damper. It's has no counterweight. Bad angled picture. It's a shadow.

 

[33 IMP]

33 IMP, Thanks! But zoom in on the 440 damper. It's has no counterweight. Bad angled picture. It's a shadow.

Then it's most likely a steel crank with LY rods.