Small block Chevy guys...what do I have?

What does the 18GM stand for

 

Thx you but I only found 6 numbers and a giant 11

 

Looks like those are 400 sbc heads on a 350.... And not angle plug.... Sorry dude!

 

Heres a picture of the whole motor I'm just wandering a value of the motor so we can sell it

 

Not the best head for performance, small intake runners and prone for cracking.

 

Looks like the pan bolts are mostly missing, just thrown together? The block has the 010 020 under the cam gear, that's a good sign. Most guys wont offer too much without knowing if it passes a crack test though.

 

I also have these parts that go with the motor all the nuts and bolts are in seperated baggys

 

It was a project motor he bought everything is covered so nothing gets inside of it

 

That would be a good block to work with if its good, check casting # on crank to see if its forged or not.

 

Where is that at?

 

Take the pan off, and look near one of the main saddles, may have to rotate the crank to see it.
https://www.enginerepairshop.com/chevy-casting-numbers.html
Also, the wide and narrow parting line is an easy way to tell if forged or not. This pic may not be for GM as for the rounded counter weights, but for sure for the parting lines.

 

Idk if I'm in the right spot but I took the oil pan off the bottom

 

Yes, right area. The crank might have to be rotated if you can not see any numbers on it in the current position. The main caps are cast with the 3951# , the #2482 main caps are the cats meow as they are nodular.

 

I believe the front two main caps are installed backwards, the arrow should point to the front of the engine.

 

a rare 2 bolt 010 block! neat.

Might be worth a few hundred bucks to someone. Figuring out the condition of the parts on something like that is a real challenge.

 

Not sure he just kinda tinkered with it for a day or so and past away last christmas

 

I think the 010/020 thing is an old wives tale. I’d like to see definitive information that supports that claim.

 

10j177666 v1205cnv and the last pic is the reason why I cant turn anything the bolt for the motor stand is in the way

 

CNV and the partial VIN 10J... means it's a 2bbl 350 from a 1970 full size Chevy car. Nothing to write home about, and would explain the 2 bolt mains (truck 350s with the 010 block almost always had 4 bolt mains).

The 010 020 thing on the front of the block is simply the last three digits of the block casting numbers that used that particular mold pattern for the end of the block. Has nothing at all to do with what type of iron was used in the casting.

 

Thx you

Thx you for clearing that up for me I really appreciate it. Also wandering how much it might be worth. My father in law was a great mechanic his whole life he wouldnt buy sumthing that was permanently damaged and the whole vin is in the top description idk if that helps

 

the important parts of the VIN are the 10J, which means Chevy car, 1970, assembled in Janesville.

Like I said before, someone might give you a few hundred bucks for it.

 

awesome thx you very much everyone I appreciate the help and all the answers to my questions very helpful and speedy responses

 

Is there any kinda test I can do to see if anything is wrong with the motor

 

you mean, like it's not put together?

It's easier to sell a running engine. You have pretty much a collection of parts.

 

Ok so basicly saying I gotta put it together to test it lol ok I got it my father in-law also bought this idk if it goes to it

 

Home porting job?

 

He was either putting it together to put in our 76 chevy Malibu or this other monster of a jeep he had or his chevy pickup truck but we didnt talk to much about it before he past.