RE: Theoretical HP

["John Katos" <john_katos@xxxxxxxxxxxxx>]

At least to the mid 70s, Illinois and Chicago used taxable horsepower for
tags. It was calculated on bore, number of cylinders and total displacement,
in Chicago and I believe Illinois there were under 58 hp and over 58 hp.
I remember that the break point was somewhere in the 300 cu. in. area.
If memeory serves me correctly there was a case where two 3XX cu. in. were
on either side of the 58 hp mark, being that the bore was used it happened
that the larger bore engine had a slightly higher taxable hp than the
stroker.
My first car a 1300cc VW Bettle was around 12 taxable hp.

John Katos
(raised in Chicago)
West Dundee, IL USA

-----Original Message-----
>>60-70 horsepower (in the modern sense. England used funny HP ratings in
those days (most likely for tax purposes) and I never have seen any
real correlation between modern HP figures and the old English ones.). <<

If was some theoretical hp figure based on the bore and stroke. Many
countries used similar schemes I think, but with different ways of
calculating it. You are correct that it was used for tax purposes.

All the best

Keith
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