The 1963 Cadillac was stated as having 51.2 Taxable Horsepower.
What Is It?
Is it still being used in the USA?

Views: 120

Reply to This

Replies to This Discussion

Another ruse by some states to get tax dollars from car owners. East Coast states like NY and NJ, if I remember correctly.  

I do not know how the number was calculated, but if you divide 325 (hp) by 51.2 that = 6.347.  Was that the common denominator used for all cars?   


It was another method for taxing automobiles, and per some quick research seemed to be more prominent outside the US, but was used by some states, and according to Wikipedia is still in use in Missouri.
The Taxable horsepower rating is derived from a RAC formula as follow:

{\displaystyle {\frac {D\times D\times n}{2.5}}}

where:

D is the diameter (or bore) of the cylinder in inches,
n is number of cylinders


Plugging in for the 63 390 I get:
(4 X 4 X 8)/2.5 = 51.2.

As we all know, just because something is on Wikipedia, does not make it fact, but did some quick checking on other sites and the seems to be the formula. As far as Missouri still using this, that probably needs to be verified.

You can see the full Wiki entry by Clicking Here.

With that,
Van, Have a Big Cigar!

Thanks for the "flaming actor" prize, Jason!

I wonder what those same states did/do with a rotary-engined car?  

That’s the cover of Pink Floyd’s “Wish You Were Here” album which has their song Have a Cigar. Just oddball humor.

 I  will have to find it but remember reading how some states are grappling on how to tax the electrics, since it will increasingly become another revenue source.

Here is a slice of one story I was reading:

“A few states have explored a per-kWh fee for EV drivers. Since most charging occurs at home, a per-kWh fee on EV charging could require a separate meter for determining which electricity consumption was for the EV. This could be avoided through submetering, relying on the meters embedded in EVSE or the vehicles, but the process of implementing submetering and separating out the EV electricity usage from the household usage does carry a cost.”

CA (where I live) is pushing hard for an additional "per mile" driving tax for every vehicle, not just EVs.  

Even though it's the rapid sale of EVs that caught the state's income collectors' beady eyes in the first place.

As more and more states mandate a "No new ICE vehicles to be sold in this state" edict in the near future, they'll be extending their tentacles even further into our wallets.  

I dig Pink Floyd too, and still have my original Dark Side of the Moon double-album. But, I admit I probably haven't looked at it for 35 years. 

RSS

Photos

  • Add Photos
  • View All

Forum

Quick weekend project

Started by Logan Robb in 1963/64 Cadillac Specific Discussion. Last reply by Logan Robb 16 hours ago. 2 Replies

Looking to replace the belts and rad hoses. anyone have the part numbers for a 1964 Fleetwood w AC? thanks! Continue

Website Header - Experimenting with Rotating Member Cars

Started by Jason Edge in General Discussion. Last reply by Dennis P. DiBari yesterday. 5 Replies

I was thinking or rotating member 63's and 64's up in the header and used Mark Geertsma's 1963 Sedan de Ville as a test car. It gets a little grainy making the picture that small, but not too bad.…Continue

Coolant Overflow Bottle / Reservoir for 64 Cadillac Eldorado

Started by Michael Stinson in 1963/64 Cadillac Specific Discussion. Last reply by Dennis P. DiBari on Wednesday. 6 Replies

Greetings Everyone.  I read a discussion thread about "radiator and related", covering coolant overflow.  Has anyone fitted an overflow reservoir / bottle to their 64 Cadillac?  Is there if a…Continue

Tags: Radiator, Bottle, Reservoir, Overflow, Coolant

Techniques for replacing pinion seal on differential

Started by allen dilley in 1963/64 Cadillac Specific Discussion. Last reply by Dennis P. DiBari on Wednesday. 5 Replies

My 63 Park Avenue has a leak at the differential.  My accomlished, experienced, and reliable mechanic has never replaced a seal of this type. I have a pinion seal and differential gasket.  I also…Continue

Tags: Replacement, Seal, Pinion

Blog Posts

Edelbrock Carb Block off Plates

Posted by Chase on March 12, 2025 at 2:05pm 13 Comments

Hey guys,

I have installed the same Edelbrock carb and have done everything the same as Jason’s carb and intake project. In the spring and summer months the car starts, runs and idles great! In the fall and winter months on a cold start, the car starts awful and wants to die until it warms up. I have to keep my foot on the throttle until it warms up or it will idle just terrible and try to die. Once it’s warm, it runs fantastic! Whats going on here? I was thinking of removing the…

Continue

'63 Tailfin Tales

Posted by Mark Mata on February 22, 2025 at 5:00pm 9 Comments

New old stock seat material

Posted by Ray Schick on August 22, 2024 at 6:25pm 2 Comments

I bought this seat material thinking that it’s…

Continue

Loud air moving sound within carb with cleaner removed

Posted by Dave Fehrle on March 23, 2024 at 3:23pm 8 Comments

While checking my Carter carb with engine running, I took the air cleaner off and there was a very loud hissing sound of air. I placed a piece of paper over the carb and it didn’t move up or down, is this normal?

Videos

  • Add Videos
  • View All

© 2025   Created by Jason Edge.   Powered by

Badges  |  Report an Issue  |  Terms of Service