Re: Fuel Pumps

[MO <micher@xxxxxxxxxxxxxxx>]

 Thanks Dodger. , I don't do what all the magazines say all the time.
My engine will be about 425 HP so I don't think I will go to the
expense of a 3/8" pickup...........................MO

On Dec 8, 9:35 pm, Dodger7...@xxxxxxx wrote:
> This is directed at MO for starters as he ask some time back about what
> size fuel pump was needed for a big block,,,, the question was somewhat
> answered  back then, but there were no numbers to put with it, I did come up with
> a  formula stolen off the net, it goes like this,,,
>
> estimated HP times expected efficiency equals lbs of fuel used
>
> there are still a lot of variables,,, but here are the numbers they gave to
>  work with.
>
>  a well tuned motor set up for good mileage runs an expected  efficiency
> rating of .4
> and a performance motor set for max all out HP has a rating of   .75
> so using a figure somewhere in the middle of say .6 , would look like  this
>
> 450 (HP) times .6 (efficiency rating) equals 270 pounds of fuel
> 270 divided by 6.1(weight of 1 gallon fuel) equals a little over 44 gallons
>  per hour
>
> like I said there are a lot of variables like temp, octane, power  adders,
> turbos, blowers and probably a lot more.
>      Not real sure what a stock pump is capable of, but  think that the
> race pumps start at around 100 gph, so you do the math,,,,,,  dodger

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