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Discussion Starter · #1 ·
I just had to put a new water pump on my 87 F-150 with 300 CU IN Straight 6. How much horsies do I gain from leaving off the clutch fan and adding an electric one?

Thanks guys!
 

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Discussion Starter · #2 ·
Also how much more could I gain if I went to a straigh 2.5 inch exaust without the cat or the muffler? Thanks again!
 

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You could probably estimate about 15 or 16 horsepower by using an electric fan and maybe another 15 horses by free flowing exhuast. Be careful though that straight 6 may like a little backpressure so i would put a flowmaster on it. Good Luck
 
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