Help ID crank shafts

[Cheapsunglasses]

Hello everyone, trying to clean out the shed and get some money to help rebuild the engine in my car.

I purchased a late 67 440 short block that was apart. I’ve also replaced a crank shaft on a 383 and had now have a spare.

That’s where I run into my problem, I have 2 crank shafts, and I can’t figure out which one is which. I’ve looked all over and I can’t find any numbers, and I can’t find a thread on how to. I would greatly appreciate help!

Don’t know if it helps, but here’s a picture

 

[moparmarks]

The 440 one will have bigger main journals.

 

[Cheapsunglasses]

Also, how much is a kinda rusty forged 383 crank worth?

 

[33 IMP]

Also, how much is a kinda rusty forged 383 crank worth?

A steel standard/standard that ain't cracked, is worth a bit, even rusty. It'll get cleaned as part of a regrind.
A cracked 030/030 is scrap weight.

 

[R413]

clean one is the 440 on the left, rusted is 383 right.

 

[66Satellite47]

If it would clean at .010/.010 that would be good. Just a guess, at least $50.

 

[Cheapsunglasses]

clean one is the 440 on the left, rusted is 383 right.

You have very good eyes, or really know things. I can’t find my caliper, so I haven’t measured it yet

 

[Cheapsunglasses]

A steel standard/standard that ain't cracked, is worth a bit, even rusty. It'll get cleaned as part of a regrind.
A cracked 030/030 is scrap weight.

Not to sound like an a$$ but “worth a bit” is a bit of a relative term, $50, $100, how much is a bit

 

[moparmarks]

Looking at the first journals I agree that the left one is the 440.
50.00 for a good useable 383 crank.

 

[Cheapsunglasses]

Thank for the help everyone! I’ll take better pictures of rusty 383 crank and move it to a sale add. It’ll probably cost a poop ton to ship unfortunately

 

[sam dupont]

probably cost a poop ton to ship unfortunately

If it ends up as scrap, you can say you tried to save it

 

[Cheapsunglasses]

If it ends up as scrap, you can say you tried to save it

I’ll put it on fakebook, here, and end of February there’s a swap meet. Also have a friend who’s dad is a hoarder and will buy anything just to have, I think I can get it sold!

I will never scrap parts, that’s just B.S.

 

[66Satellite47]

Did you do the back yard test on it? Stand it on end, without the damper bolt, lightly tap each counterweight with a hammer. If they all ring like a tuning fork, the crank is good. Worth at least $50, if it doesn't ring, in the dumpster.

 

[Cheapsunglasses]

I did it on a couple weights just playing and got good rings.

It never occurred to me, the damper bolt effecting the ringing. The 440 crank has its damper bolt in it, and doesn’t have as crisp of a ring as the 383 w/out. Makes sense now

 

[66Satellite47]

That may not be the fanciest test, but sure has been accurate for me for many years and severely abused big blocks. Never broke a crank, but pretty sure one was close. Again a steel 440 or 383 crank was designed for 5500 RPM max. I ran mine to 7000 all time, one to 7400 RPM. A BAD plan.

 

[Cheapsunglasses]

It’s a used 50 year old crank, buyer should know the risks

 

[66Satellite47]

It’s a used 50 year old crank, buyer should know the risks

If it has not been abused too bad, should be good. Again my backyard test tells the tail.

 

[Cheapsunglasses]

If it has not been abused too bad, should be good. Again my backyard test tells the tail.

I’m not disagreeing with you, I add just commenting, you can buy something used and expect perfection

 

[Cheapsunglasses]

I’ll slap a $75 price tag on it, and see what happens. I don’t know if it really means anything, but if it’s the 383 crank I think it is, it’s a 66 330hp crank

 

[sam dupont]

I’m not disagreeing with you, I add just commenting, you can buy something used and expect perfection

One should be able to expect it is useable. Why waste people's time and damage your reputation by selling something without knowing what you are selling?

The window sticker of my 66 Charger reads: "standard cam" which is 325 horse, never heard of 330 horse until Magnums came along. But, I learn a lot here and it wouldn't be the first time.