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Old 03-21-2012, 12:16 PM
James Fischer James Fischer is offline
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Smile 1972 Cadillac Engine size question....

Could someone please shed some light on the engine size in 1972 Cadillacs...
.
I WAS under the understanding that MOST Cadillac ambulances had the 500 size motor...but I just recently read that in reality Cadillac did put the 472 in about 50% of that years cars....???

I find that off base,since most of the early '70s Caddilacs I have seen were the 500.....?

Any thoughts ??

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Old 03-21-2012, 12:26 PM
Jeremy D. Ledford Jeremy D. Ledford is offline
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1968 till 1974 all commercial chassis cars from Cadillac had the 472 V-8 across the board, including Fleetwood and DeVille models as well. I think the Eldorado's of the early 1970's did have the 500 CID engines. For 75 and 76 DeVille's, Fleetwood's, Commercial Chassis and Eldorado's all had the 500 CID engine. If your 72 has the 500 more than likely it was swapped at one time, as it would "bolt right in" the place of a 472.
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Old 03-21-2012, 12:37 PM
John Royark JR John Royark JR is offline
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Good question. Cadillacs from 1968 thru 1974 used the 472, except the Elderado which started using the 500 in 1970. The 500 was not used in the other Cadillacs until 1975. (info from Standard catalog of Cadillac).
As far as I know only 472s were in the commercial chassis.

So here is another question, since the 500 was avalible in 1970 could you get your commercial cahssis ordered with it?
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Old 03-21-2012, 12:39 PM
John Royark JR John Royark JR is offline
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Quote:
Originally Posted by Jeremy D. Ledford View Post
1968 till 1974 all commercial chassis cars from Cadillac had the 472 V-8 across the board, including Fleetwood and DeVille models as well. I think the Eldorado's of the early 1970's did have the 500 CID engines. For 75 and 76 DeVille's, Fleetwood's, Commercial Chassis and Eldorado's all had the 500 CID engine. If your 72 has the 500 more than likely it was swapped at one time, as it would "bolt right in" the place of a 472.
Sorry Jeremy, Im not trying to one up your post, but when I began to look it up and type it there was no reply.
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Old 03-21-2012, 12:45 PM
Jeremy D. Ledford Jeremy D. Ledford is offline
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Quote:
Originally Posted by John Royark JR View Post
Sorry Jeremy, Im not trying to one up your post, but when I began to look it up and type it there was no reply.
Don't delete it! You answered what I was wondering about when the 500 CID came out!
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Old 03-21-2012, 01:18 PM
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Default Agreed

Hi James,

Both John and Jeremy are correct. I've run into so many situations in my years buying Cadillacs from people that just aren't familiar with them, that they refer to just about anything over 400ci as the "500" or the "502", when in reality it's almost always a 472. The 472 is by far my favorite Cadillac engine....the older ones starting in 1968 had 375 hp stock with 525 foot lbs of torque. Great compression as well....if I remember correctly 10 1/4:1
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Old 03-21-2012, 04:13 PM
Tony Karsnia Tony Karsnia is offline
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"So here is another question, since the 500 was avalible in 1970 could you get your commercial cahssis ordered with it?"


Well, I don't like to use the words "always" and "never" when it comes to professional cars; about the time you swear something was or wasn't, the rare exception comes along to prove otherwise.

As far as I've ever known, 1970-74 Cadillac commercial chassis were only offered with the 472 engine. IF a customer asked about an optional 500 engine, they would likely have been told it wasn't available in the commercial chassis line. Of course, there could have been the one exception where somebody just HAD TO HAVE the larger engine and was willing to pay for it at any cost. In this case, I strongly suspect a post-delivery engine swap would have taken place, though I've never heard of such a thing happening around here.

I agree with the positive comments about 472 engines. I've had extremely good luck with the many I've owned. People are always impressed when they find out our '75 Lifeliner has a 500 engine, but by 1975 GM had it so choked off with the emissions garbage, the performance is anything but impressive.
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Old 03-21-2012, 06:27 PM
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Default Engine size

Tony I know exactly what you mean by impressing people, when talking engine size. The guys with engines anything 6 liter or under, are fun to approach and talk about cars with. You tell them you got a 7.7 liter under the hood of your vehicle. They get that funny stare back at you. Moments I will always cherish. And you tell them what you drive and its another of those funny looks at you.
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Old 03-21-2012, 10:40 PM
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John ED Renstrom John ED Renstrom is offline
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so tell me is the 74 a unleaded fuel engine. I know that the 73 was not though it was in the standard caddy's. I'm guessing they did not go unleaded fuel till the 75 76 years.

now then the 58 we have here has the 390 not the 383. as does the 63. though they are different engines they are the same cubic inches.
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Old 03-22-2012, 04:15 PM
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Default 383?

Quote:
Originally Posted by John ED Renstrom View Post
so tell me is the 74 a unleaded fuel engine. I know that the 73 was not though it was in the standard caddy's. I'm guessing they did not go unleaded fuel till the 75 76 years.

now then the 58 we have here has the 390 not the 383. as does the 63. though they are different engines they are the same cubic inches.
Your 58 has a 390? I thought those had the 365? I know that was so close to the 390 change for Cadillac so I had to ask. Is it the original motor?
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