Caddy 500 casting number help

Have a caddy motor I plan to sell and would like to get the details right. Block Casting Number 1486239. Any info would be helpful. Thanks.

 

<TABLE border=1><CAPTION>

Here's some casting info ​

Long Block Casting Numbers 68-85 472/500/425/368




</CAPTION></TR><TBODY><TR bgColor=skyblue><TH>Year </TH><TH>CID/L </TH><TH>VIN </TH><TH>Description </TH><TH>Block # </TH><TH>Bore </TH><TH>CR </TH><TH>Head # </TH><TH>Chamber </TH><TH>Crank # </TH><TH>Stroke </TH></TR><TR><TD>68-69 </TD><TD>472/7.7 </TD><TD></TD><TD>Early / High Compression </TD><TD>1486238 </TD><TD>4.300 </TD><TD>10.25:1 </TD><TD>1486250 </TD><TD>76 </TD><TD>1486424 </TD><TD>4.060 </TD></TR><TR bgColor=skyblue><TD>70 </TD><TD>472/7.7 </TD><TD>R </TD><TD>Early / High Compression </TD><TD>1485200 </TD><TD>4.300 </TD><TD>10.0:1 </TD><TD>1486250
1497902
1495950

</TD><TD>76 </TD><TD>1486424 </TD><TD>4.060 </TD></TR><TR><TD>70 </TD><TD>500/8.2 </TD><TD>S </TD><TD>Early / High Compression </TD><TD>1485200 </TD><TD>4.300 </TD><TD>10.0:1 </TD><TD>1486250
1497902
1495950

</TD><TD>76 </TD><TD>1496793
1495094

</TD><TD>4.304 </TD></TR><TR bgColor=skyblue><TD>71-73 </TD><TD>472 / 7.7 </TD><TD>R </TD><TD>Early / Low Compression </TD><TD>1485200 </TD><TD>4.300 </TD><TD>8.8:1
8.5:1?

</TD><TD>1497902 </TD><TD>76 </TD><TD>1486424 </TD><TD>4.060 </TD></TR><TR><TD>71-73 </TD><TD>500 / 8.2 </TD><TD>S </TD><TD>Early / Low Compression </TD><TD>1485200 </TD><TD>4.300 </TD><TD>8.5:1 </TD><TD>1497902 </TD><TD>76 </TD><TD>1496793
1495094

</TD><TD>4.304 </TD></TR><TR bgColor=skyblue><TD>74 </TD><TD>472 / 7.7 </TD><TD>R </TD><TD>Late / Low Compression </TD><TD>1485200 </TD><TD>4.300 </TD><TD>8.25:1 </TD><TD>6024493
6024552

</TD><TD>120 </TD><TD>1486424 </TD><TD>4.060 </TD></TR><TR><TD>74-76 </TD><TD>500 / 8.2 </TD><TD>S </TD><TD>Late / Low Compression
Carbureted or FI (****og Port)

</TD><TD>1485200
1486200

</TD><TD>4.300 </TD><TD>8.25:1 </TD><TD>6024493
6024552

</TD><TD>120 </TD><TD>1496793
1495094

</TD><TD>4.304 </TD></TR><TR bgColor=skyblue><TD>77-79 </TD><TD>425 / 7.0 </TD><TD>S/T </TD><TD>S: Carbureted
T: FI (****og Port)

</TD><TD>1609110 </TD><TD>4.080 </TD><TD>8.2:1 </TD><TD>1609112
1609423

</TD><TD>96 </TD><TD>1609142R </TD><TD>4.060 </TD></TR><TR><TD>80-85 </TD><TD>368 / 6.0 </TD><TD>6/9 </TD><TD>6:Carbureted
9: DFI (TBI)

</TD><TD>C:1615255
F:1620734

</TD><TD>3.800 </TD><TD>8.2:1 </TD><TD>C:1615188 </TD><TD></TD><TD>1609142 </TD><TD>4.060 </TD></TR></TBODY></TABLE>

 

Thanks, came across that chart before. At first, I thought I was mistaken with the last digit being a "9". but I don't think there is any mistaking it.....

 

You may want to check into 525 engines for that casting number. Outward appearance is like a 500, BUT it is a totally different animal. This is a guess on the #. I went through this not to long ago. Sold one as a 500 and turned out to be a 525 after the guy torn it down. had to refund his money. Since then I s****ped the block, so I can't go out and look at it.

 

Could you give some more info on this? I was not aware that Cadillac made a 525. I can not find anything on the net about it. Thanks.

 

The Antique Automobile Club of America has a Cad/Lasalle forum-you could check there: http://forums.aaca.org/f151/.

There used to be a group called the American Automobile Casting Numbers Club, but their website has been suspended since January and i don't know how to contact them. Have you tried actually talking to an old Cadillac dealer partsman?

 

Ok I'm a caddy fanatic, but i've never heard of a 525. I not claiming to know everything but unless you have some proof I'm calling ********. (I'm from missouri, so show-me)

 

The best way to identify it is to remove the pan and check the casting number on the crank. I too have never heard of a 525 cadillac. I have always heard however that the 500 was the largest cubes ever made for gm. I have seen your other posts on roaddevils. It is a cadillac engine, but that number 9 at the end screws with things quite a bit. Check the crank casting number. If you don't want to do that, measure the stroke but putting it on tdc, remove the number 1 plug, put a tig wire or a coat hanger in the hole. Then mark the coat hanger or tig wire at that point. Next rotate the ***embly and mark the wire again. Then measure the distance between them. If it's 4.06", its a 472 or lower, if it's 4.3", then it's a 500. Happy hunting.

 

525 Cadillac engine.....never heard of it

 

Mystery solved. Had a caddy expert look at a bunch of the pictures and he stated that it is a '68/'69 Caddy 472 with 1970's heads. Says it was common for the last casting number an "8" to look like a "9" due to air bubbles that got trapped there.

 

I think the "525" that is being referred to is the "425"...

I have read that the '68-early '69 blocks had inferior lower end oiling, compared to the castings ending in "5220"

Just food for thought...

 

sure it's not a 425?
Al

 

MY HUMBLE APOLOGIES. Big typo error and brain warp. Your right ,I was wrong!! 425 is the correct cubes.Same info listed pertains to it. Sorry for the mistake!!