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Old 01-04-2020, 03:39 PM   #41
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Picked up my 2020 F250 Tremor with 7.3 about two weeks ago. I am still working on mpg numbers.
Which axle did you get with that?
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Old 01-04-2020, 04:00 PM   #42
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My 3,500 mile summer average (unloaded) was 16.0 MPG. 6.2 with 4.30's. It's all in how you drive it . . . . You can easily get a lot less with hard acceleration and high cruising speeds.

8.5 MPG pulling a 11.5K fifth wheel.. (That's a 5,000 mile trip average and does not include unloaded miles)

Early reports on the 7.3 in Ford Truck Enthusiast Forum are encouraging for fuel mileage.

Mileage increases A LOT once the differentials are broken in. 5,000 miles of towing did a lot to work in the differentials. My mileage increased about 2 MPG after some towing miles.
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Old 01-05-2020, 11:24 AM   #43
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I would give that new 7.3 a couple of years in the real world before buying one. Give a chance for any gremlins get worked out
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Old 01-05-2020, 11:45 AM   #44
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I would give that new 7.3 a couple of years in the real world before buying one. Give a chance for any gremlins get worked out
I would not hesitate to buy the 7.3 if I was going gas. Just a regular push rod engine. Nothing fancy about it.
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Old 01-05-2020, 02:43 PM   #45
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My 3,500 mile summer average (unloaded) was 16.0 MPG. 6.2 with 4.30's.

<snip>

8.5 MPG pulling a 11.5K fifth wheel.
That's encouraging. About what my F-150 gets now. I tend to travel light on the right foot. Thanks.
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Old 01-05-2020, 04:32 PM   #46
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I would not hesitate to buy the 7.3 if I was going gas. Just a regular push rod engine. Nothing fancy about it.
So is keeping spark plugs in the heads but there was a problem with the V-10 the first couple of years spitting plugs.
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Old 01-05-2020, 04:48 PM   #47
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It's a cam in block design. The spark plugs are in the side of the heads like old V8's.
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Old 01-05-2020, 04:50 PM   #48
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Here is an article with picture.

https://www.hotrod.com/articles/insi...3l-pushrod-v8/
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Old 01-05-2020, 04:52 PM   #49
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I would not hesitate to buy the 7.3 if I was going gas. Just a regular push rod engine. Nothing fancy about it.
Read about the variable pressure oil pump used to cool the cylinders . this is new for ford isn't it ? since i'm a chevy guy i don't really know . one reason i stuck with the 2019 chevy 6.0 instead of the new 6.6 was i want to wait a yr or two to see how the new direct injection works and any other issues .
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Old 01-05-2020, 05:15 PM   #50
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It's a cam in block design. The spark plugs are in the side of the heads like old V8's.
I was using that as a example. Manufacturers use the consumer as their testing ground it seems. Sure, they'll be good engines coming off the lot but what about at 50K miles? 100K Miles?
Any 1st year production engine or vehicle is unproven.......only time and miles will tell.
True, it's a heck of a good design, I want one, not this year though, probably not next year either. Third production year should be a safe bet against gremlins.
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Old 01-05-2020, 06:33 PM   #51
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Read about the variable pressure oil pump used to cool the cylinders . this is new for ford isn't it ? since i'm a chevy guy i don't really know . one reason i stuck with the 2019 chevy 6.0 instead of the new 6.6 was i want to wait a yr or two to see how the new direct injection works and any other issues .
The variable pressure oil pump is just that. The pressure is lower at idle than at full throttle. They are using cooler jets to cool the pistons. Is it new to ford I don't know but cummins uses them on there diesels with good success.
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Old 01-06-2020, 11:12 AM   #52
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Just watched the TFL Dyno the new ford 7.3, and gotta say I have some mixed feelings now. I mean it has some really excessive loss through the drive train.-72 hp (16.7%)
-68 lbft of torque (14.3%) That does seem excessive. I wonder what the parasitic loss through the old 6.2 and the 6spd was?

O.k I looked at dyno results for the 6.2 in the 3/4 ton work challenge, and it seems to have only lost about 10%.. With only about a 12hp difference between the two at the wheels.
The new 7.3 still holds over 400 lb ft at the rear wheels (406 ish)
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Old 01-06-2020, 11:39 AM   #53
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Just watched the TFL Dyno the new ford 7.3, and gotta say I have some mixed feelings now. I mean it has some really excessive loss through the drive train.-72 hp (16.7%)
-68 lbft of torque (14.3%) That does seem excessive. I wonder what the parasitic loss through the old 6.2 and the 6spd was?

O.k I looked at dyno results for the 6.2 in the 3/4 ton work challenge, and it seems to have only lost about 10%.. With only about a 12hp difference between the two at the wheels.
The new 7.3 still holds over 400 lb ft at the rear wheels (406 ish)
I watched that too and understood that the 6.2 was tuned with torque management turned off. I think that plus broken in vs. new engine probably explains the difference.

Torque management is meant to protect the transmission by limiting engine torque during certain events.
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Old 01-06-2020, 03:08 PM   #54
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The TFLtrucks new 2500 7.3 was quicker on the approximate 1/8 mile track than their 1500 5.7 Hemi Rebel with aftermarket intake and exhaust although with bigger tires and a lift. They both lost to the ecodiesel Wrangler Unlimited Rubicon.
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Old 01-06-2020, 03:59 PM   #55
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The TFLtrucks new 2500 7.3 was quicker on the approximate 1/8 mile track than their 1500 5.7 Hemi Rebel with aftermarket intake and exhaust although with bigger tires and a lift. They both lost to the ecodiesel Wrangler Unlimited Rubicon.
Im not for that "faster" stuff. My previous Hemi 6.4 2500 would move pretty good, but it didnt tow very well. But Still with that 7.3 and 10 speeds it should tow pretty darn well for a gasser.
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Old 01-13-2020, 06:27 PM   #56
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Remember, the 7.3 was built for trucks carrying heavy loads. Should be good towing, an F250 running unloaded most of the time may not be the best option.

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