2003 F-550 6.0 Gearvendors O/D - Ford Powerstroke Diesel Forum

6.0L Performance Parts Discussion What has or has not worked for you?

 
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post #1 of 5 Old 07-12-2008, 04:45 AM Thread Starter
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Before I bash Gearvendors I would like some of yalls opinions.

I just put the Gearvendors O/D on and went on a long haul. 70 mph on cruise 11.16 mpg loaded with a gross weight of 15,600 lbs. I thought not bad since I was getting 10.5 mpg empty.

90° temp outside, EGT 820-880°, Trans 172°, Boost 7-8 PSI and Water 198-202°.

Empty was 12.75 MPG same 70 MPH cruise. Same outside temp, EGT 790-830°, Trans 169°, Boost 6-7 PSI and Water 196-198°.

This was on the 165 hp canned tune. When I fill up it is pouring out pure diesel, no foam. That way I know it's full. All calculations are done by hand.

What gives 2.25 MPG for $3250, come on there has to be a reason why I'm not getting the 14-15 MPG that I was promised.

Any suggestions PLEASE!

Last edited by oxman202; 07-12-2008 at 05:10 AM. Reason: wrong title
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post #2 of 5 Old 07-21-2008, 06:55 AM
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I looked at a gear vendors and ran one in OBS f-350 4x4 with 7.3 for awhile. They are an investment that pays out over time, and they IMO allow you to really pull better in steep terrain which is what I bought mine for. I had the ZF5speed and I really needed the splits between 3-4 and 4-5 when hauling At the time I was not intersted in the mileage. it was 1998 HEHE diesel was cheap.

2006 crew cab XLT, Fx4 6.0 stroke, torqe shift trans, deleted EGR, Turn over ball GN.
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post #3 of 5 Old 07-21-2008, 11:00 AM Thread Starter
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Now I'm getting 16.71 mpg. Way better the 12.75. All I needed to do was take that headache rack off.

[SIGPIC][/SIGPIC]
2003 F550 std. cab 2005 CTD NV5600
Gearvenders Overdrive
4.88 rear
Quadzilla Commander A-Piller
5" Straight Piped Exhaust
Custom CB and Amp Overhead Rack
Bird Meter in dash
Stargun Antenna
Amsoil Everything
Amsoil Bypass Oil Filter
Airdog Fuel System
12ft Flatbed
9400# Wet
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post #4 of 5 Old 07-21-2008, 04:54 PM
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Must have been a tall Headache rack.....Or just really heavy.

2006 crew cab XLT, Fx4 6.0 stroke, torqe shift trans, deleted EGR, Turn over ball GN.
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post #5 of 5 Old 07-22-2008, 08:10 AM Thread Starter
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Quote:
Originally Posted by zspear1 View Post
Must have been a tall Headache rack.....Or just really heavy.
Check this other link that I started.

Gearvendors O/D F-550

[SIGPIC][/SIGPIC]
2003 F550 std. cab 2005 CTD NV5600
Gearvenders Overdrive
4.88 rear
Quadzilla Commander A-Piller
5" Straight Piped Exhaust
Custom CB and Amp Overhead Rack
Bird Meter in dash
Stargun Antenna
Amsoil Everything
Amsoil Bypass Oil Filter
Airdog Fuel System
12ft Flatbed
9400# Wet
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