caddy motor found!!!, need ID

[68C15]

I just acquired a caddy engine & TH400 trans combo & need to know what excactly I have. the air cleaner has a sticker saying "472" the carb # is 7028237. it has an AIR pump. the AC compressor is mounted on the top front of intake. where if any is the ser. # or casting ID #'s based on the carb # being a 7 digit & the 4th digit is a 8 I am assuming it is a '68. am I close? what are the particulars of this beast? (comp. ratio, torque HP, etc.) can I still get an Eldorado pan from the dealer? do all these monsters take the same pan gasket (bolt pattern)?
from the looks of this behemoth I could use it (motor & trans assy.) to measure first downs! will I have room for driveshaft? pics to be taken tomorrow.

[Longhorn Man]

there are no casting numbers to tell you what you have.
No pans from the dealer, what does your pan look like? They had 3 styles. All 3 style oil pans will swap, but you'll need the oil pump pick up that matches the pan.
The TH400 has a 12 inch tail shaft IIRC, even on a SWB, there will be drive shaft room.
Here is a LINK to some of the details of my caddy swap.

['70 C/10 SS500]

Well, to get a ballpark idea of what motor it may be look for these features. Does it have the exhaust manifolds on it? If it does, look at the passenger side manifold, if is has a large almost baseball size/shape dimple or depression in it right in the middle of the front port it is most likely the small 425 ci motor. If it doesn't (and assuming it has the stock manifolds) it is either a 472 or 500. Seeing as to it already has a "472" sticker on the air cleaner, it would be a safe bet to say it's probably a 472 ci Cadillac motor! Good find!

The block id numbers are on the rear of the motor past the intake manifold and by the oil pressure sender. If the last 4 digits of the number end in 5200 it is either a 472 or 500. Look at the back for those numbers.

Also, the later (newer) 425 & 368 motors have single plane intake manifolds. The 472 and 500 motors have dual planes.

Here are some Cadillac websites for further info:

Maximum Torque Specialties Board

Maximum Torque Specialties Parts

Cowboy Seven Cadillac Board

Cad Company

Potter Automotive -Serious Cadillac Performance Parts

Torque Inc.

Cadillac Forums

['70 C/10 SS500]

68C15, it's funny because I read you post and really didn't take in ALL of you questions. I got fixated by the thread title and trying to help id it.

There is ALOT of information on these motors, some within Caddy circles, some not. I have quite a few different Cadillac related sites bookmarked but it's hard sometimes to know what to post. Try this one on for size though, it pretty much has all of the answers to your other previous questions: 1958-75 Cadillac Engines . It has info on your seemingly '68 472 motor. It's kind of cool really, the '68 was the first year for the BIG Cadillac family of motors, soon to come out with the great 500 cid. That goes well with your name 68C15. Caddy motors and Chevy trucks in my mind were made for each other.

Here is another good and DEEP site (many different paths to check out) that has a ton of links:

Central Virginia Cadillac La Salle Club - Links

[68C15]

sorry for being so late with pics. I wish I had a different life. wanna trade Andy?

[68C15]

here's the rest. see it has points? see it has the (I believe) dimple in pass manifold? would I need headers?(performance)

[GMC AMI]

If this is a 68 472 be prepared to buy only the best high test fuel available. This motor
will not run well on reg. gas. To run the correct timing you will have to add octane booster. I know this motor well, just a heads up for another possum lodge fan.

[68C15]

thanks for the tip Mike. I just may keep looking or stay with the gen. 6 big block I have on the stand.
I know you're looking out for me. we are all in this together.
keep your stick on the ice!

['70 C/10 SS500]

68C15, the small depression in the pass. side exh. manifold in the picture of yours is normal. It is without a doubt the "better" manifold style of the 472 & 500 motors. The "worse" 425 has a much larger depression in it right smack dab in the middle of the number 1 exhaust port which is the forward-most cylinder on the passenger side.

As far as headers go, to my knowledge no Cadillac headers built specifically to fit our trucks are offered via the aftermarket. IMO you'd either have to find Cadillac headers for a car and see if they'd fit or modify to fit, or buy Chevrolet BB headers for our trucks and cut the flanges off and weld on Cadillac flanges. The exhaust flanges are available through a few of the Cadillac specific parts vendors. Lastly, you could always start with Cad flanges and build custom headers as needed.

[GMC AMI]

I.M.O. if you want a streetable 472 Caddy that runs well on reg. The 1971 model where GM went to a lower compression ratio works fine and does not spark knock.
All of them fun Torque monsters, it's just in the last 15 years the gasoline formula
has changed and there is not as much energy being released in the burn. In other words, less quality, what a shocker!

[lux hauler]

Hmmm.....? An A.I.R. pump. If it is, in fact, a '68 engine, it must be a Cali engine.
Do you happen to know what the last three digits are in the cylinder head casting number?

[68w/sbc406]

my truck had an air set up on it. it was built in the fremont plant and sold in oregon

[lux hauler]

Originally Posted by 68w/sbc406

my truck had an air set up on it. it was built in the fremont plant and sold in oregon

As far as I know, the only Cadillacs to get AIR before '71 were California cars.

[3 on the tree]

There used to be an outfit called CMD. All they did was hot rod caddy engines. Wonder what the would have for headers ?

[Longhorn Man]

headers... you buy big block headers for your vehicle, then you cut off one end, and weld on a flange kit

[lux hauler]

Originally Posted by 3 on the tree

There used to be an outfit called CMD. All they did was hot rod caddy engines. Wonder what the would have for headers ?

CMD sold.....now it's the Cad Company.