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How much HP will i get from this???

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Old Dec 22, 2002 | 07:22 PM
  #1  
IROCME's Avatar
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From: N/a
Car: 1986 IROCZ
Engine: LB9....rebuilding coming soon
Transmission: rebuilt 700R4
How much HP will i get from this???

4 inch exhaust and a 40 series flowmaster give me??
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Old Dec 22, 2002 | 07:31 PM
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From: Maryland
Car: 2005 Subaru STI
Engine: 153ci of Turbo Power!
Transmission: 6-Speed
Absolutely nothing. In fact, on your setup you would LOSE power.

Tim
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Old Dec 22, 2002 | 10:57 PM
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Mark A Shields's Avatar
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Car: 99 Formula
Engine: LS1
Transmission: T56
Axle/Gears: 342
Originally posted by TRAXION
Absolutely nothing. In fact, on your setup you would LOSE power.

Tim
Yup, that 3'' system will suit you just fine, for many more ponies.
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Old Dec 22, 2002 | 11:06 PM
  #4  
kfoley's Avatar
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From: New Palestine, IN (Just East of Indy)
Car: '85 Z28
Engine: 305
Transmission: WC T5, 3.23 posi
You don't benefit from 4" exhaust until you hit like 450hp, or if you're using forced induction (which you shuld be about there anyways if you are).
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Old Dec 23, 2002 | 09:25 PM
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MdFormula350's Avatar
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From: Maryland; USA
yeah i agree, theres a such things is over doing it..
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Old Dec 23, 2002 | 10:23 PM
  #6  
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From: N.W. Houston
Car: 87 IROC Z-28
Engine: 406-Mini Ram-AFR 195's-DFI Gen 6.32
Transmission: 700-R4 w/Art Carr converter
Axle/Gears: 9" - 31 spline - 3:89
Think about hooking a 4" fire hose to your garden outlet. The water will just poor out of the end with no volisity. The same applies to exhaust, bigger is not always better. The proper cubic inch diameter of pipe for the given horsepower level will keep the volisity high and extract more exhaust gas.
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