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Do heads increase gas mileage?

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Old Apr 18, 2007 | 10:44 AM
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Default Do heads increase gas mileage?

I read cams decrease MPG, but will adding heads even it out by increasing it?

Thanks in advance.
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Old Apr 18, 2007 | 10:47 AM
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it really depends on the combo - swapping camshafts doesnt always produce that outcome (with supporting mods ofcoarse)
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Old Apr 18, 2007 | 10:52 AM
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I honestly get pretty much the same gas mileage that i used to...as long as I don't put the pedal to the floor.
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Old Apr 18, 2007 | 11:17 AM
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Originally Posted by fastest94v6
I honestly get pretty much the same gas mileage that i used to...as long as I don't put the pedal to the floor.
How do you not put the pedal to the floor?

Bill
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Old Apr 18, 2007 | 11:25 AM
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Originally Posted by ivanisok
I read cams decrease MPG, but will adding heads even it out by increasing it?

Thanks in advance.
Lots of things can be read, whether or not they are true is another story.
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Old Apr 18, 2007 | 11:26 AM
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It depends on the setup. If you can increase the engine efficiency then you will see an improvement in gas mileage as well. My Z06 with a F14 cam and Dart 205s gained 3 mph on interstate cruising.
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Old Apr 18, 2007 | 01:13 PM
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Originally Posted by Bill Bowling
How do you not put the pedal to the floor?

Bill

Hey Bill, I don't drive with the pedal to the floor 24/7....It also depends on how well your car is tuned....the theory is that, you don't have to give it a lot of acceleration to go...therefore you get better mileage...

Last edited by fastest94v6; Apr 18, 2007 at 02:42 PM.
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Old Apr 18, 2007 | 01:20 PM
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As stated before it'll all depend on the setup, yes in theory heads can gain you some milage.
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