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Chad224 12-10-2011 04:24 PM

Modified/Lifted/etc MPG?
Okay this is going to get some varied responses but please answer from exp or professional opinion.

1999.5 quad cab short bed.

Has 3:92 gears (I think)
Has 33" A/T tires 12.5 width, with 4-5 inch lift. Not body
Flow master infront of rear tires side fed.
Eldebrok shorty headers, venom fuel pump,
K&n intake, racing coil, high pro plugs wires
And cooler, and Jet chipped

Truck has 96k on it using amsoil or purple oil,
Only additional stuff is fith wheel tailgate and bushwhacker
Fender flares.

With all of this lol what should be my estimated mpg?

Thank you for all responses!


Chad224 12-10-2011 08:07 PM


Studbuster 12-10-2011 08:42 PM

ONLY ONE WAY TO KNOW. "Check it". Don't forget to drive it as you normally do/will.
I would think in the area of 7.5 to 12 in the real world. Less when towing your trailer.

Chad224 12-10-2011 09:27 PM

I own this truck, IMO I would think that those mods would help mpgs I have calculated 16.2 in the past but mpgs have dropped and I'm looking for what I should be getting on a regular basis with these mods. Thanks!

Stangshcky12 12-10-2011 11:08 PM

How long have you owned the truck? Mpg will go down this time of year because of fuel additives.
What your calculating is an impressive number in my oppinion

Chad224 12-10-2011 11:19 PM

That's mpg is with a tank of premium driving conservatively. If I drive aggressively I can easily put it at 8 mpg. The dyno said it has 390hp and 430 lbs of torque

chefred112 12-10-2011 11:31 PM

that hp/tq is optimistically high with the mods you posted, gotta be more than what you posted...what size is the motor?

Chad224 12-10-2011 11:36 PM

Not exaggerating. It's bored over, and maybe a few more small things I bought it all done up. Lol runs amazing recently bought it a month ago for 3k. I remember him saying more stuff I know engines just not a racing guy. Not sure how far it's bored over.

Chad224 12-10-2011 11:36 PM

I will post a pic when I get home.

chefred112 12-10-2011 11:40 PM

that may make sense then...curious how much, has it seen the track? what was the original block size 5.9? I'm sure there is more into it, bored over, rockers etc...

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