I have possibility to buy this one.

Do you think it's real 427 ZL-1?
How much is this worth?

I can get more photos next weekend.

http://www.camaro.fi/3946052/3946052%20-%201.JPG

http://www.camaro.fi/3946052/3946052%20-%202.JPG

http://www.camaro.fi/3946052/3946052%20-%203.JPG

http://www.camaro.fi/3946052/3946052%20-%204.JPG

From MorTec;
3946052....427.......69......4-bolt, Alum. ZL-1, Mark IV

Nice find.

Nice find.

Excellent find. Now if I can only find one myself. I've already got a Jan '69 set of 074 heads for it.

What is the date?
And what is on the pad?

Why is the 2 in the casting number so small?

The holy grail of the automotive world!

Why is the 2 in the casting number so small?

I noticed that too and found after that some others lookin the same.

Here is one good link to ZL-1 history and nice pics.
http://www.guinns-engineering.com/Wetherall%20ZL1%20Casting.htm

http://www.guinns-engineering.com/images/Wether4.jpg http://www.guinns-engineering.com/images/Block%20Numer.jpg

I wonder how this engine got to Finland?
Ought to be a nice sory.

I wonder how this engine got to Finland?
Ought to be a nice sory.

I wonder that too :D
It was in old drag race car...

BTW. I'm not sure if I keep it ;)

If it's part of Copo history, it should be in the right Copo Camaro

So I'm going to see it tomorrow :thumbsup: ...and hopefully have the courage to buy it and bring it to my home :cool:

Please - help me now!

Give me - as much you can - advices how can I be sure it's correct and year 1969 block.

Any numbers to look at? Date codes? Details?

The casting date will be on the block..also, is there any stamping on the pad? Very nice find!!!

Two more pics, but no more numbers :(

http://www.camaro.fi/3946052/3946052%20-%205.jpg

http://www.camaro.fi/3946052/3946052%20-%206.jpg

Look for a production date on the drivers side of the block. Also, make sure you check the front engine pad for any stamped letters or numbers.

If it turns out to be just one of those Can Am engines from a McLaren or a Chaparral ship it to me for proper disposal so nobody gets hurt......

What is the bore size ?

This is race engine (509). Made by Riolo.

More pics, no production date found.




http://www.camaro.fi/3946052/ZL1_001.jpg

http://www.camaro.fi/3946052/ZL1_002.jpg

http://www.camaro.fi/3946052/ZL1_003.jpg

http://www.camaro.fi/3946052/ZL1_005.jpg

http://www.camaro.fi/3946052/ZL1_006.jpg

Does it have the siamese cylinders or does it have the water jacket between the cylinders?

The Can Am block is siamese cylinders and the ZL1 block is like the iron blocks with water jacket between the cylinders

The liners look very close between cylinders on that block

that's why I asked what the cyl bore dimension is

Does it have the siamese cylinders or does it have the water jacket between the cylinders?

The Can Am block is siamese cylinders and the ZL1 block is like the iron blocks with water jacket between the cylinders

The liners look very close between cylinders on that block

that's why I asked what the cyl bore dimension is

Looks like siamese cylinders :confused:

http://www.camaro.fi/3946052/ZL-1%20cylinders.jpg

Was there any SCCA road racing in Finland back in the 1970's! Neat fine!

That would look so good in my car vellu. And now you don't have to work at getting into a COPO! Let me know how much you need for it!

Looks like the block might have a partial fill of hard block in the water jackets. Notice that the block has been retapped with a petcock quite a bit higher than the lower pan rail original drain plug hole?
I also remember a article about a drag racer from finland who bought Dave Riolo,s aluminum can am 509 out of Daves 55 Chev ( called Temptation ) and was doing shake down passes in the US, ( Pomona ?) I think it was a 68 Camaro Pro Stock Style Tube chassis car back in the late 80,s or early 90,s. I think the guys name was Per Eriks? or something like that.
It also looks like that block has had some tig welding on the passenger side under the engine mount location and also above the starter.

If you look on the smooth machined surface around where the oil pressure sending unit would screw in on the back of the block by the distributor hole, there should be a 3 digit number stamped there. Only 500 ZL-1 engines were produced, and the blocks were all stamped from 001 thru 500. I have seen 4 different ZL-1 blocks, and they all had a 3 digit number stamped in this location.

correct me idf I am wrong, but the snowflake is not of the winters casting...it has the LD...I know that Yenko started casting these blocks after Chevrolet also.....is there any small stamped numbers under the timing chain cover...for example... YS1Y...that would ondicate a Yenko heritage also...please correct me if I am wrong...Im sure no expert..

from what I have seen, there is not very much rhyme or reason....Ive seen these blocks with a cast # and no date...with a cast # and date...with screw-in and push-in freeze plugs also....I believe this was not a "GM" production block that would have the 3 digit number (Ive seen with only 2 digits also)stamped in the rear...I believe those were the motor assemblies that were made and designated specifically for the ZL-1 Camaros and Vettes...it seems that the number of "numbered" motors made far exceeded the number of cars built..I dont know where the number 500 comes from, but it could be correct...

does anyone know for sure what the LD snowflake stands for??

correct me idf I am wrong, but the snowflake is not of the winters casting...it has the LD...I know that Yenko started casting these blocks after Chevrolet also.....is there any small stamped numbers under the timing chain cover...for example... YS1Y...that would ondicate a Yenko heritage also...please correct me if I am wrong...Im sure no expert..

from what I have seen, there is not very much rhyme or reason....Ive seen these blocks with a cast # and no date...with a cast # and date...with screw-in and push-in freeze plugs also....I believe this was not a "GM" production block that would have the 3 digit number (Ive seen with only 2 digits also)stamped in the rear...I believe those were the motor assemblies that were made and designated specifically for the ZL-1 Camaros and Vettes...it seems that the number of "numbered" motors made far exceeded the number of cars built..I dont know where the number 500 comes from, but it could be correct...

does anyone know for sure what the LD snowflake stands for?? The one Yenko block I've seen personally (in a buddys 57 Nomad/ElCamino) has "Yenko" cast into the block.

The one I have seen one with a rather large Yenko cast into the block as well . The one I have has no casted Yenko but it does have this. I think possiblty an early block?
It does have the small 2 at the end of the casting number.



http://gs272.photobucket.com/groups/jj170/N5YFAILFC/?action=view&current=tn_JackNissenproject0351.jpg


http://gs272.photobucket.com/groups/jj170/N5YFAILFC/?action=view&current=tn_69X-66427Blue002.jpg

http://gs272.photobucket.com/groups/jj170/N5YFAILFC/?action=view&current=tn_69X-66427Blue007.jpg

Do you know any more info on the history of that block?

I have not seen the yenko stamped on the pad like that.

here is a pic of the Yenko cast in block 2 different styles

Yenko was given permission by Chevy to market the alum Winters blocks in 1974

I know the history back 3 previous owners & know the earliest of the three got it from his brother who owned it for a long time, lived in the Los Angeles area. I've never tried to get a hold of him to see what he knows about it. I'm interested in finding out what there is to find out about these engines. There doesn't seem to be much info out there.

It seems to me I saw an advertisement from Yenko that looked like an old western "wanted" sign that showed the various offerings including the ZL/1. Anybody have a copy of that?

I will try to answer this for you....

I believe that the block you have was a unit made after 6/1969.

I just took a look at some old images of my first ZL1 motor and that was the month it was casted and it was in the 400 range of units GM built in that run.

My block had the smaller 2 for the 6/1969 timeline line so yours I will assume came after these were initially ran.

It's quite possible it could have been made for any of the race teams as a back up block, or whatever it was intended for.

Replacement block???
Maybe/Maybe not.

I was looking at your images and you are missing these dates that are casted into these blocks.

However, that left rear bell flange has that " KPT - OS1 " (it looks like) casted into this block.
I have never seen that before.
My thinking is that maybe this is who it was intended for, who casted it, or who paid for these to be made.
Ending with a 1, that could a numbering designation; but dont quote me on this!!!
But every one I've been around had someting distinctive about it that seperated it from the rest.
Even the prototype blocks were different as well.

I am also seeing that your block was not tapped for the top rear bell housing bolt; although not used, mine was tapped.

I am also seeing that this block was not tapped for the rear cam plug; points above and below the center camshaft hole location.
These are machining steps skipped, things that would have been part of the typical order process that followed it inside GM's machining process location.

The casting pour's finish look has a feel not as defined as my numbered block.
That could be the result of the different times it was made and the processes and such to make it.

I have seen that LD before once in a Snowflake; but I cant recall when, where, and on which block it was on.

Your block is Definately a GM based casting for sure!

Are your main caps numbered?
Do they have any stamped in codes that are casted into them???

Main caps look in the pictures to be aftermarket. JMO.

I will try to answer this for you....
- However, that left rear bell flange has that " KPT - OS1 " (it looks like) casted into this block.

- Are your main caps numbered?
Do they have any stamped in codes that are casted into them???

- That KPT looks KPT - CST
http://www.camaro.fi/3946052/KPT.jpg

- I don't have pics of main caps now. This engine is race engine, so these main caps have been changed for sure.

I have tried to contact Riolo Racing Engines by fax, but I have not got any answers yet. I live in Europe, so I don’t want make a call… If someone of you lives near CA, try to contact them pls.. - if they remember history of this engine?

Riolo Racing Engines, Roseville, CA 95630, Phone: 916-771-0752 Fax: 916-771-0682

I seriously doubt that those folks will be able to determine the KPT OST image you have here.

You will need to find out who casted this and for what individual, team, or whatever.

I say ... Good Luck!

Last add...

I inquired thru a friend who has been around these and he thinks Reynolds might have done some aluminum work for GM in the past.

Not sure though...