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Old 11-17-2011, 02:11 PM   #1 (permalink)
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Join Date: Sep 2011
Location: New Jersey
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Camaro - '00 Chevrolet Camaro SS
90 day: 16.18 mpg (US)

S10 - '95 Chevrolet S10 LS
90 day: 15.84 mpg (US)

Formula - '99 Pontiac Firebird Formula
90 day: 21.14 mpg (US)
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Met My goal in the Truck!

Well I managed to get a little over 22 MPG *City only* when it was rated at 17, then after the EPA revisions now rated at 15 City.

No mods, just driving. This may not seem like a lot to you, but coming from driving my Camaro (spirited at times) to this, its a large gain (especially going from buying premium to regular)


This actually changes up my engine swap plans. I'm still going to swap in a T56 (6 Speed) but now, i'm content with the V6.

so this means

I'll go ahead with the 4.8 V8 LSx - more power, sounds good, similar mileage
OR

I'll swap out for the marine intake- keep the truck true (or close) to its roots so i can turbo it.



I've basically done away with the idea of swapping in a 4 cylinder now.

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Last edited by Debonair; 11-17-2011 at 03:30 PM..
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Old 11-17-2011, 03:06 PM   #2 (permalink)
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Join Date: Nov 2011
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WorkHorse - '88 Ford F150 XL
90 day: 13.5 mpg (US)

DailyBeater - '93 Ford Escort LX
Team Ford
90 day: 39.37 mpg (US)

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Ive heard the LSX motors can make some sick MPG while still puttin a ton of power down. Im a Ford guy, and I can make my Windsor motor spank most LSx motored cars, but its not NEAR as efficient MPG wise. I have always had respect for those motors!
Matt
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Old 11-17-2011, 03:33 PM   #3 (permalink)
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Join Date: Sep 2011
Location: New Jersey
Posts: 53

Camaro - '00 Chevrolet Camaro SS
90 day: 16.18 mpg (US)

S10 - '95 Chevrolet S10 LS
90 day: 15.84 mpg (US)

Formula - '99 Pontiac Firebird Formula
90 day: 21.14 mpg (US)
Thanks: 3
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Thanks! yeah my LS1 A4 gets 18.5-19 city.

I did some research and the 4.8 and 5.3s in the Silverados get about the same MPG - 16ish.

i factored in the weight difference, and it would be about 17-18 MPG city * that is if i drive it as they say. My 4.3 is rated the same so i would be equally happy with the LSx MPGwise.

I don't really want to make this one a powerhouse, i just want it to get out of its own way, sound good, and get decent mileage.

What vehicle do you have the Windsor in?
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Old 11-17-2011, 03:59 PM   #4 (permalink)
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Join Date: Nov 2011
Location: Middle TN
Posts: 111

WorkHorse - '88 Ford F150 XL
90 day: 13.5 mpg (US)

DailyBeater - '93 Ford Escort LX
Team Ford
90 day: 39.37 mpg (US)

The ST - '13 Ford Focus ST
90 day: 26.78 mpg (US)
Thanks: 0
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Ive got a 90 Mustang coupe that originally had a HCI 5.0 and a stick. It barely put 260rwhp down on a heartbreaker dyno, but would run low 8's high 7's in the 1/8 mile. I had fun, but now its time for more power. Im puttin the finishing touches on a 393 stroker as we speak. I used to obsess over power and mpg and then said screw it, bought a 93 Escort with a whopping 88rwhp and called it a day. Ill let the power cars make power and the mpg car make mpg LOL
Matt
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Old 11-17-2011, 04:49 PM   #5 (permalink)
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Join Date: Sep 2011
Location: New Jersey
Posts: 53

Camaro - '00 Chevrolet Camaro SS
90 day: 16.18 mpg (US)

S10 - '95 Chevrolet S10 LS
90 day: 15.84 mpg (US)

Formula - '99 Pontiac Firebird Formula
90 day: 21.14 mpg (US)
Thanks: 3
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Awesome I set out to do the same thing, have my Camaro for power, and then the truck for mileage. i wanted to swap in one of the Cobalt motors and get better mileage, but i'm not doing too bad with the V6 and most likely do the same with the V8 lol.
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Old 11-17-2011, 05:47 PM   #6 (permalink)
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Join Date: Nov 2011
Location: Middle TN
Posts: 111

WorkHorse - '88 Ford F150 XL
90 day: 13.5 mpg (US)

DailyBeater - '93 Ford Escort LX
Team Ford
90 day: 39.37 mpg (US)

The ST - '13 Ford Focus ST
90 day: 26.78 mpg (US)
Thanks: 0
Thanked 3 Times in 2 Posts
Yeah I was tryin to get my 88 F150, 4x4, 302, C6 tranny (no OD) to get decent MPG cause it was my DD but then finally gave up and got a true beater car instead. Its nice runnin around reliably and gettin good MPG but I do miss havin the power, or the brute strength of the Mustang or F150 LOL. Thanks to this site tho, I have somethin to be proud of and mess around with on this car too which scratches in "wanna mod somethin" itch.
Matt
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Old 12-01-2011, 05:06 PM   #7 (permalink)
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TBSS - '08 Chevrolet Trailblazer SS 2WD
90 day: 19.36 mpg (US)

Wife's car - '09 Chevrolet Impala SS
90 day: 22.96 mpg (US)

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90 day: 45.99 mpg (US)
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V8-wise, have you considered the 5.3L with Displacement on Demand (DOD...also called Active Fuel Management, or AFM)? My wife's '09 Impala SS with the LS3 gets 27-29 on the highway with that engine. That's with 4 people in the car and the trunk loaded with cargo. The DOD was available in Trailblazers/Envoys too.

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