Not so good gas mileage?

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02-09-2011, 09:10 AM

#31

Quickbird144

1st Gear Member

Thread Starter

Join Date: Jan 2011

Location: Orlando

Posts: 109

Quote:

Originally Posted by AdderMk2

How is my statement "big head talk"?

I have 45 more cubic inches than he has, I have a SIGNIFICANTLY larger cam, AND a heavier car.

Not to mention my compression being 11.25:1 versus his 9:1.

His car is not suffering in the MPG, because of his gears.

Got it.

02-10-2011, 05:42 PM

#32

Dj_Seph

4th Gear Member

Join Date: Jul 2009

Location: Arizona

Posts: 1,127

Quote:

Originally Posted by AdderMk2

10:1. ;D GT40P heads. Also my car is most likely heavier since I have quite the sound system and other technologies. Also, my car isn't Mass air.

02-10-2011, 05:58 PM

#33

frdmstng1986GT

5th Gear Member

Join Date: Jul 2006

Location: Alton, New Hampshire

Posts: 2,518

Speed density with a cam is my guess. There are few came that work good with the factory speed density due to a lack of vacuum at idle. The cars can run great one min and be pig rich the next. Just my $.02.