Can anyone tell me if this crank is good, and what it is? - Team Camaro Tech
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post #1 of 20 (permalink) Old Mar 5th, 10, 06:29 PM Thread Starter
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Shawn
 
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Can anyone tell me if this crank is good, and what it is?

hey guys, i have a 283/302 crank, im not sure what it is

first off, it has the notch, but i am aware that the notch is NOT 302 specific, but tufftriding is

also, i need to know how the mains look, i think the pictures make them look a bit better, but they are fairly scratched up, can this be polished, or do they need to be machined?












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post #2 of 20 (permalink) Old Mar 5th, 10, 07:26 PM
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Smile Re: can anyone tell me if this crank is good, and what it is?

Need to see the flywheel end, with the flywheel removed is best, to tell what it is.

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post #3 of 20 (permalink) Old Mar 5th, 10, 07:48 PM
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Re: can anyone tell me if this crank is good, and what it is?

looks like it would polish up nicely to me.

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post #4 of 20 (permalink) Old Mar 5th, 10, 07:57 PM
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Re: can anyone tell me if this crank is good, and what it is?

Is it forged steel or cast iron?
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post #5 of 20 (permalink) Old Mar 5th, 10, 07:58 PM Thread Starter
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Re: can anyone tell me if this crank is good, and what it is?

Quote:
Originally Posted by TJS69 View Post
Need to see the flywheel end, with the flywheel removed is best, to tell what it is.
it is a regular 3815822 crank if that helps

Quote:
Originally Posted by Eleanor's Nemesis View Post
looks like it would polish up nicely to me.
thanks, sounds good

is it possible to polish it up at home? If not, how much on average would it cost to have a machine shop do?

if it is polished, can i run normal bearings, or will i have to get oversized ones?
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post #6 of 20 (permalink) Old Mar 5th, 10, 07:58 PM Thread Starter
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Re: can anyone tell me if this crank is good, and what it is?

Quote:
Originally Posted by Youngladd View Post
Is it forged steel or cast iron?
it is forged, but im not sure if it is from a 283 or a 302

sorry, i thought all 283 cranks were forged
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post #7 of 20 (permalink) Old Mar 5th, 10, 08:02 PM
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Re: can anyone tell me if this crank is good, and what it is?

Quote:
Originally Posted by victimizati0n View Post
it is forged, but im not sure if it is from a 283 or a 302

sorry, i thought all 283 cranks were forged
How can you tell by the pics that it is forged?
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post #8 of 20 (permalink) Old Mar 5th, 10, 08:07 PM Thread Starter
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Re: can anyone tell me if this crank is good, and what it is?

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Originally Posted by Youngladd View Post
How can you tell by the pics that it is forged?
look at the first and second picture, the first rod journal you can clearly see, you can tell it is forged by looking at the forging/casting line, if it is thick, the crank is forged, if it is thin, its a cast crank

not to mention the part number on the crank is a forged only part number
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post #9 of 20 (permalink) Old Mar 5th, 10, 08:17 PM
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Re: can anyone tell me if this crank is good, and what it is?

Quote:
Originally Posted by victimizati0n View Post
it is a regular 3815822 crank if that helps



thanks, sounds good

is it possible to polish it up at home? If not, how much on average would it cost to have a machine shop do?

if it is polished, can i run normal bearings, or will i have to get oversized ones?

I don't know what the individual price is today for polishing a crank-all the crank work i have had done in the past 15 years had balancing and or grinding done as well so it wasn't really itemized.

When I worked in a machine shop in 1985 we charged 18-22 dollars for polishing.

I would take it to a machine shop and hire them to do it , it isn't an elaborate process but there may be chemicals that need to be used, plus they can check it for roundness and other things.

You should be able to use regular sized bearings after a normal polish job, but it is always a good idea to have this checked by the machine shop.

1968 Camaro NHRA/IHRA SS/C 'Super Stocker' 396/Jerico
1968 Street/Strip Camaro 350 w/PG
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post #10 of 20 (permalink) Old Mar 5th, 10, 08:21 PM
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Re: can anyone tell me if this crank is good, and what it is?

Quote:
Originally Posted by victimizati0n View Post
look at the first and second picture, the first rod journal you can clearly see, you can tell it is forged by looking at the forging/casting line, if it is thick, the crank is forged, if it is thin, its a cast crank

not to mention the part number on the crank is a forged only part number
Not to be a smart @@s, but you would not know how many people would not know that. As far as what that crank is, I could not tell you, if it will clean up, use it. That's my two cents! For what it's worth!
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post #11 of 20 (permalink) Old Mar 5th, 10, 08:23 PM
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Re: can anyone tell me if this crank is good, and what it is?

My suggestions are to measure the rod journal; 2.0 inches is a 283 crank, maybe from a 283 FI or 2X4.
Wide parting line equals forged crankshaft.
Most 283 cranks had press fit balancers, no threads.
Most truck engines came with roller timing chain and forged crank.
Remove the timing sprocket and flywheel and support the crank off the floor, whack the counterweight with a hammer and listen for a nice high frequency ring - no cracks.

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post #12 of 20 (permalink) Old Mar 5th, 10, 08:58 PM Thread Starter
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Re: can anyone tell me if this crank is good, and what it is?

Quote:
Originally Posted by Youngladd View Post
Not to be a smart @@s, but you would not know how many people would not know that. As far as what that crank is, I could not tell you, if it will clean up, use it. That's my two cents! For what it's worth!
i have been doing a ton of research on my little 302, i originally was told it was a 327 block from a 67' impala ss that had been bored/stroked to a 355, but after i tore the block apart i realized i had a 302 on my hands

Quote:
Originally Posted by Everett#2390 View Post
My suggestions are to measure the rod journal; 2.0 inches is a 283 crank, maybe from a 283 FI or 2X4.
Wide parting line equals forged crankshaft.
Most 283 cranks had press fit balancers, no threads.
Most truck engines came with roller timing chain and forged crank.
Remove the timing sprocket and flywheel and support the crank off the floor, whack the counterweight with a hammer and listen for a nice high frequency ring - no cracks.
thanks, is there any way to tell from the pictures if it has been tufftrided or not?

I want to get the crank checked out, and im trying to find a good machinist in my area, i stopped at one, to get some prices a few years back, and the guy asked me about the engine, i told him what it was and what i had, and told him a set of 462 fuelie heads were on the car, and he told me that those heads wernt on the engine
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post #13 of 20 (permalink) Old Mar 5th, 10, 09:18 PM
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Smile Re: can anyone tell me if this crank is good, and what it is?


69 Camaro -originally a LM1 car. 327, Edelbrock E-streets, hooker, DUI performance distributors, ultradyne cam, stewart, TRW etc. Vintage Air, AGR steering, Corbeau GTSII seats, 700R4 transmission, 12-bolt w/Eaton 4.11:1
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post #14 of 20 (permalink) Old Mar 5th, 10, 10:38 PM
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Re: can anyone tell me if this crank is good, and what it is?

Quote:
Originally Posted by Youngladd View Post
Not to be a smart @@s, but you would not know how many people would not know that. As far as what that crank is, I could not tell you, if it will clean up, use it. That's my two cents! For what it's worth!
That's one of the 1st things I learned about Chevy cranks: thin line = cast; wide line = forged.

I'm guessing 283 crank. They made like a million of them. Need to see flywheel flange...

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post #15 of 20 (permalink) Old Mar 5th, 10, 11:47 PM Thread Starter
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Re: can anyone tell me if this crank is good, and what it is?

Quote:
Originally Posted by PowerWindows View Post
That's one of the 1st things I learned about Chevy cranks: thin line = cast; wide line = forged.

I'm guessing 283 crank. They made like a million of them. Need to see flywheel flange...
the flange is notched
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