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Old 09-06-2019, 05:21 PM   #91
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Let's get real there are places the traffic is too heavy to go fast, and there are plenty of miles of highway that traffic is light and have high speed limits, and doing 75 or 80 is legal and safe as long as your equipment is in good order.
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Old 09-06-2019, 05:42 PM   #92
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my red bus has 3.54 gears T-444E, and little 225/70R19.5 tires.. even befire I swapped to an OD trans it was a 70 MPH bus with an AT545.. with OD my 6th gear is unusable.. in fact I have it programmed only to operate at the lightest engine load.. above 30% engine load it downshifts to 5.. otherwise I watch my EGT run up...



with full size tires I couldnt imagine anything numerically lower than a 4.10..



yes it is VERY possible to over-gear..



Like I mentioned before you dont want your engine RPM and your input shaft RPMs to be much different.. thats where you REALLY make heat with AT545s.. when you let your engine run up against the stall speed...



you break them... I know it.. Ive done it... ive lived it...



so YES its VERY possible to over-gear.. in fact once I find an axle I can gear-down I will be doing it.. to 4.10 or 4.30.. my 3.54 is way too tall
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Old 09-06-2019, 06:02 PM   #93
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Originally Posted by Ronnie View Post
Let's get real there are places the traffic is too heavy to go fast, and there are plenty of miles of highway that traffic is light and have high speed limits, and doing 75 or 80 is legal and safe as long as your equipment is in good order.

The arguement is all relative. I don't live my life on "what if's" A 747 could fall on your bus, so you should never get in a bus.
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Old 09-06-2019, 06:16 PM   #94
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:thanx:
The arguement is all relative. I don't live my life on "what if's" a 747 could fall on your bus, so you should never get in a bus.
rofl!!! Yes!
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Old 09-12-2019, 09:31 AM   #95
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Im picking up the bus on Tuesday, VIN is 1HVBBABM0VH519688 if anyone knows how to look up the tranny. Im looking at preferably 2k RPM at 75MPH.
Im planning on getting this too.
International CE powered by Navistar 7.3L T444E Common Rail - Diesel MAGNUM EVO-Tech Heavy Duty Performance Chip.

I don't want to have to be bouncing off the rev limiter for 5 hours.
The T444E never came in common rail. The injection is a HEUI system.
No high pressure fuel pump other than the lift pump, it uses a HPOP (high pressure oil pump) to drive the injectors.

Man I'd love to see 2k @ 75mph, let me know if you ever get close.
I'd beware some place claiming the 7.3 is a common rail, doesn't sound like they have a clue.
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If you would like to check out my website that has all sort of information especially for the T444E/7.3PSD engines check out www.PatrickTheSalvageGuy.com I've got helpful downloads and articles as well as a link to my YT for other how to videos mainly on the F series trucks.
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Old 09-12-2019, 09:42 AM   #96
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Originally Posted by PatrickBaptist View Post
Man I'd love to see 2k @ 75mph, let me know if you ever get close.
I'd beware some place claiming the 7.3 is a common rail, doesn't sound like they have a clue.

does this count?


IMG_2833.jpg
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Old 09-12-2019, 09:44 AM   #97
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does this count?


Attachment 37456
WHERE DID YOU GET THIS! I WANT NOW!!! Please post a how to for this if you can!
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Old 09-12-2019, 10:16 AM   #98
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Fuel Mileage

cadillackid, what kind of fuel mileage do you get by running the low RPM's

What rear end ratio and transmission are you running as well?
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Old 09-12-2019, 10:43 AM   #99
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That is one cool instrument cluster.
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Old 09-12-2019, 12:36 PM   #100
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Join Date: May 2009
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my rear end gears are 3.54 with 225/70R19.5 tires.. its actually too low RPM.. although better since I turned up the power on the 444E but I really should 4.10 gears because the RPM is too low... on average I get 11-14 if I keep it at 65...



I swapped in an allison 6 speed transmission replacing the AT545 2 years ago when the AT545 broke..



-Christopher
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