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Old 12-31-2017, 04:40 PM   #1
Slowy-gonzalez
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What are this # on the piston

I bought a couple of 57 trucks one does not run, it was left under a tree for years without the hood and for sometime without the dist., it had a double carb set up and all that rain water going down thru there, this truck has operating air bag system, with a notch on the frame, along with good alum radiator, chrome pulleys, etc etc with that in mind, and because the other truck engine has good amount of $ into it, I believe the truck that is not running might have good brand or quality internals, took the head off and its bad , now I am just wondering what the numbers 05-347-07-c on top of the piston might mean.
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Old 12-31-2017, 04:45 PM   #2
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Re: What are this # on the piston

Forgot to even mentioned :
Its small block chevy
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Old 12-31-2017, 05:54 PM   #3
Alex V.
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Re: What are this # on the piston

Looks like flat-top "double eyebrow" to me but I didn't get anywhere with the number on Google.

Is that a sleeve I see?
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Old 12-31-2017, 05:58 PM   #4
Slowy-gonzalez
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Re: What are this # on the piston

I know they r 345np .30 but was just wondering what that 2nd set of numbers meant,
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Old 12-31-2017, 07:10 PM   #5
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Re: What are this # on the piston

Here is the damage
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Old 12-31-2017, 07:53 PM   #6
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Re: What are this # on the piston

Going by the rust in the port in the head on the other side need to pull it also. looks like the engine may have got rained in. I think the engine is going to need to come out.
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Old 12-31-2017, 08:01 PM   #7
Slowy-gonzalez
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Re: What are this # on the piston

The truck is actually getting a swap, 5.3 6.0 or 6.2 still not decided on which one, i did a 5.3 swap on an 84 about 8 years ago and really loved it,
I just took the head off because my 10 old wanted to see the pistons
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Old 12-31-2017, 08:11 PM   #8
PGSigns
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Re: What are this # on the piston

The pistons are Federal Mogal hypereutectic coated .
Jimmy
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http://67-72chevytrucks.com/vboard/s...d.php?t=661131
Good friends, good food and a hotrod what else do you need?
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1965 BBW short fleet Sold and going to a good home
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Old 12-31-2017, 08:38 PM   #9
Slowy-gonzalez
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Re: What are this # on the piston

Thanks for the replies,
Happy holiday to everyone
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2014 cc duramax
2017 king ranch power stroke
57 chevy big rear window, camaro front clip, rear is notched
57 chevy truck, air ride no engine yet,

Last edited by Slowy-gonzalez; 12-31-2017 at 08:53 PM.
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