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Title: Re: [FWDLK] DAMMIT, we're in agreement; I hate that!
No documentation, but here's how I heard it many years ago from one who worked in styling. When Chrysler dynoed an engine, it was full dress. that is, with all accessories, such as water pump and gen/alt. A/C wasn't as common then, so probably not on the engine. When Ford and Chevy did it, they used stripped eng with the proper temp water pumped thru with an external pump, good coll air supplied, and nothing that could rob some power working. So , when Chrysler said it was 285 hp, that was as delivered and used in your car, and it was usually rounded down, say from 288 or suchlike. Ford and Chebbie weren't even close to the claimed in usable form. That's what the man said......... Ray Jones
Gang, I firmly believe that advertised HP ratings are mostly cooked up. But in my documents there is one factory supported reference. I have a factory dyno sheet on the newly available 56 D500-1 dual quad engine dated 3-9-56 and it was done on a used D500 mule engine with the key dash one parts added i.e. the dual intake and Large exhaust (2 1/2 incher 4 bolt flange) which by the way unlike Chryslers were not truck but D500 only for 56, the cam was stock D500 and so was the CR at 9.25. The readings peaked at 276 HP & 322 ft lbs about 16 over the D500 advertised rating. The engine however was then improved with the higher compression heads and reprofiled cams for high speed, the carbs were also eventually rejetted after dyno work by Danny Eames in April. However when I had the privilege of talking to a Kiekhaefer dyno mechanic referred to me by Wayne G a few years back he stated that routinely the Dodges when blueprinted and dyno tuned were in excess of 1 HP per cubic inch with all "stock" components and likewise the Chryslers easily exceeded all stated ratings. This leads me to believe that the factory was in no way looking to boost ratings. Just my 2 cents, Tim
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