Author Topic: Cadillac 500 cid engine  (Read 168 times)

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Offline crossboss

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Cadillac 500 cid engine
« on: July 17, 2019, 09:30:58 am »
I have been researching the Caddy 500 cid engine…its really an overlooked engine with huge potential in horsepower/torque output. This engine almost resembles a 460 in its design. With so many aftermarket parts like aluminum heads, intakes, roller cams, Im very impressed. What do you guys think?
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Offline pbf777

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Re: Cadillac 500 cid engine
« Reply #1 on: July 17, 2019, 12:41:32 pm »
      Historically, the Caddy engines have had a good following in the performance and racing; remember Allard, Briggs Cunningham, Kurtis and of course was popular in hot rods even to the point of such slang as Fordillacs, Studillacs and so on.  And I believe still a good alternative to the same old same old 350/350 in one's hot rod.   

      Being in Florida, our most frequent exposure to the 500's was for the air boat industry, in which this engine with it's large cubic inches (low speed torque), and relatively (for it's capacity) light weight, made it quite popular at one time in automotive direct drive air boats.  The engine lends it's self to "hopping-up", and the factory cast iron heads really are of potential as compared to many other offerings from the other O.E. engines of the time; particularly of note is the generous valve spacing allowing valving of size only limited by the cylinder wall proximity.  But the castings (particularly the block) are relatively thin and light, seeming more than adequate as intended, but may prove troublesome if one attempts to push the power sums excessively.    :)   

« Last Edit: July 17, 2019, 07:07:15 pm by pbf777 »

Offline TJH

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Re: Cadillac 500 cid engine
« Reply #2 on: July 17, 2019, 03:30:21 pm »
It depends on what you want to put it in. They don't just fit right in. In stock condition they have lots of torque and are relatively light for the size. If you are going to use it in something other than a Cadillac spend some time researching the fit, how it will work with the transmission you want to use, cost of exhaust because it will most likely be custom headers etc.. The costs of fitment sometimes outweighs the benefits of the motor. Also - they don't make them any more so finding them is not as easy as it used to be.