fuel economy death with a cam?

**griftymcgrift** · 01-29-2008, 12:25 PM

so how much does a mild cam (224/224 112 lsa) affect economy? i was thinking about just a cam sometime soon but i dont want to get like 9 MPG. any examples would help. oh i have a 99 T/A stock as of now.

**98formy** · 01-29-2008, 03:57 PM

I lost about 2-3 mpg with the same cam, except 114 lsa

**RedMetal** · 01-29-2008, 04:17 PM

I run a TR224 112lsa with 3.90 gears in the 10bolt, my car is a M6. Mixed Hwy/city (mostly Hwy) I get anywhere from 17.5- 20.8mpg.

Or I can get about 280 miles on a tank (+or-)

**nhraformula** · 01-29-2008, 04:31 PM

Originally Posted by 98formy

I lost about 2-3 mpg with the same cam, except 114 lsa

same here, i have a 224 cam

**griftymcgrift** · 01-30-2008, 01:43 PM

ok thanks guys i dont have the cam, but would like to put one in and was hoping i could still DD the hell out of it and not spend millions in gas money.

and holy crap, you have 3.90's and still get 18.... i want a manual

**nhraformula** · 01-31-2008, 07:01 AM

Originally Posted by griftymcgrift

ok thanks guys i dont have the cam, but would like to put one in and was hoping i could still DD the hell out of it and not spend millions in gas money.

and holy crap, you have 3.90's and still get 18.... i want a manual

mpg all comes down to your driving style.

**Bottesini** · 01-31-2008, 08:43 AM

Originally Posted by nhraformula

mpg all comes down to your driving style.

+1 I just had my cam installed yesterday, and have not even gone through one full tank. Not sure how much less MPG I am getting, but I know this first tank will be something close to gallons per mile since I am having a hard time not enjoying the new toy

**Mr. Luos** · 01-31-2008, 08:49 AM

Originally Posted by griftymcgrift

ok thanks guys i dont have the cam, but would like to put one in and was hoping i could still DD the hell out of it and not spend millions in gas money.

and holy crap, you have 3.90's and still get 18.... i want a manual

I have 4.11's, a 402ci stroker, large cam, and get 20MPG on the highway.

Stay out of it, and it will do good.

Untuned 226/234 554/575 112 got me 27.5 MPG on the highway with stock gears...M6.

**andrew69_04** · 01-31-2008, 08:55 AM

my 224/230 578/588 114LSA untuned with boltons got my 22 with the 3.42's m6 car. i was havin my fun too!

**NorthwoodDavid** · 01-31-2008, 09:09 AM

Originally Posted by nhraformula

mpg all comes down to your driving style.

+2 im all stalk w/ the 224/224 12lsa and highway its no problem for a DD (and im in college). but w/a cam i dont think anybody can resist having fun for the 1st few drives! Mine is also a 99 untune, but an M6! good luck i really like the cam so far...

**griftymcgrift** · 01-31-2008, 09:24 AM

im in college too. it sux being poor. i was always under the impression that you must tune a cam...you throw any codes? and would HP tuners do the trick if so?

**Bottesini** · 01-31-2008, 09:32 AM

I would defiantly get a tune if for nothing else drivability. Granted the bigger you go the more desperately you will need a tune. I know mine ran without a tune, but the tune helped to even things out some.

**NorthwoodDavid** · 01-31-2008, 09:35 AM

Originally Posted by griftymcgrift

im in college too. it sux being poor. i was always under the impression that you must tune a cam...you throw any codes? and would HP tuners do the trick if so?

No kidden! And yea it throw a code uhh..."ramndom misfire, running lean" i believe, something like that. Came on the day after i instaled it but only stayed on 4 like a day. I went a whole month w/ no code being threw then last week the same 1 came on for about a day, but that was it. And yeah from the research i did its best to get a tune to get the most out of it. But im saving 4 headders and polly an ls6 intake b4 the tune
I bet the tune will help out MPG too...i think...well i idk. Also HP tuners?...i have no idea hope some1 eles answers that lol!

**Mr. Luos** · 01-31-2008, 09:52 AM

I got P0300 a lot...
Unless you turn off that code, you will tend to get that even after a tune....at least with larger cams.

**NorthwoodDavid** · 01-31-2008, 07:21 PM

Another thing dude, my car buckles or like tugs @ anything thing under 1x rpms like in first or second. Happens like in parking lots not too much to put up w/. But i think its bc im choking my cam...hope this helps i had no idea it was gunna do that.lol.

**VYSSKiwi** · 01-31-2008, 09:50 PM

I got a baby cam comp cam XR265Hr,Its good for over all power from 1200rpm up to 6000.You do need to do the exhaust and air intake to get real benafits from a cam.At the mo iv got the heads of getting plained,This is becouse when you install a cam you loose i bit of compresion.Iv had a good tune in real time,three hours on the road.some may laugh at a baby cam but tuned with mods I get plenty of power and anywere from 13 to 17.5 to the Liter.it also pays to run your car on the highest octain possable.thus better throttle responce means you can cruse with your foot just on the peddle.Hope this helps