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1lb boost=X horsepower?

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Old Oct 15, 2005 | 08:37 AM
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Default 1lb boost=X horsepower?

Does anyone know how much HP each lb of boost makes on a whipple charged 6.0L? Maybe there is no magic number. Any guesses are more than welcome.
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Old Oct 15, 2005 | 11:07 AM
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Originally Posted by DanaliHD
Does anyone know how much HP each lb of boost makes on a whipple charged 6.0L? Maybe there is no magic number. Any guesses are more than welcome.
Probley about 15rwhp but the higher you spin the whipple the less power you get because it gets so hot
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Old Oct 15, 2005 | 03:27 PM
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I may be way off, but I thought it was more like 25-30. But, that would assume you are still in efficiency range.
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Old Oct 15, 2005 | 03:31 PM
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With my set up I got 19-20 rwhp per pound. However, mine is intercooled (Radix)
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Old Oct 15, 2005 | 03:49 PM
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My thinking comes from turbos, I assume they pretty close though.

What was the boost level that you saw 20hp/psi boost on the Radix?
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Old Oct 15, 2005 | 03:58 PM
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Originally Posted by sliderbkt
My thinking comes from turbos, I assume they pretty close though.

What was the boost level that you saw 20hp/psi boost on the Radix?

Yeah you get alot more power from a turbo usally about 25rwhp because you dont lose power from a belt. The faster you spin a blower the more boost you make but you also get more drag from the rotors so you lose hp not including the air heating up. The one thing I loved about my whipple was the instant boost thats a big plus.
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Old Oct 15, 2005 | 03:59 PM
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I had 236 rwhp with just a tune and Flowmaster. After thr Radix and a 9 pound pulley I got 413. I did install 4.10 gears as well but I was told that may actually hurt my numbers.

413-236=177 gain
177 gain /9 pounds of boost=19.666666 per pound
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Old Oct 15, 2005 | 04:04 PM
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My 5.7 should make about 300rwhp N/A so if a turbo adds say 25rwhp and Im going to run 15 psi that puts me at 675rwhp I cant wait to get it done.
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Old Oct 15, 2005 | 06:10 PM
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Keep in mind Justin, the more boost the turbo makes the hotter the Iat get also.
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Old Oct 15, 2005 | 06:24 PM
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dounle the atmospheric pressure should double the hp....so 300 x 2 should be 600.
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