Cummins Big Cam upgrades

You've got to my opinion one of the best engines ever produced, I had a 350 BC III on a COE Int'l and back then It would do what ever a 3406 B would with less fuel.

 

I don't know with 300 hp, but I used to to exactly 5.5 to 5.75 steady pulling a flat bed from Las Vegas to all over the Peoples Republik of California, loaded both ways with close to 80K lbs all the time and had a 9 speed direct and 24.5 tall tires, I always wished it had a thirteen, because it was either too high or too low rpm going up the hills and I was sure it could get a little better mileage.

 

put the duel fuel line kit on it from pittsburg power about $80 bucks so it feeds the fuel to both ends makes a big difference like 30 hp easy mod

 

I love these motors and let me tell you how fuel efficient they are, down here where I live (Florida Keys) we go to Miami for all our loads,flat sea level ground second the best fuel mileage that we have experience here come from a Big Cam III 350, 378 Pete dump truck 8.5 mpg that's loaded one way with 70K lbs but consider that City driving, this truck has now over 2 million miles and 1.3 millions on the last inframe, still put 450 to 500 miles a day and only use a gallon of oil betwin oil change which the last four or five years have been at 20k miles, there are a few other trucks with them Big cams reporting 8 mpg, same roads same loads.

The best mileage was an L8000 Ford that I used to have with a 8.3 Cummins 250 hp I got as much as 9.25 mpg driving exactly by the speed limit, but usually 8.75 to 9 mpg was the standard, so if you rebuild it keep us posted and please don't call them come apart, I have more faith on those old engines than any other, specially the new tech, my next truck will have a BCIII loaded to the gills.

 

There is a guy here that has a T800 KW with a BCIII with some mods and he is spanking the big Cats with up to 550 hp, one of the things he did is he got the intake manifold from a N14 and air to air, some twicking on the pump and one size larger injectors but other wise evrything else is stock, he used to walk all over me empty or loaded with my 475 Cat that was flashed to 500 hp, until I ran into Mr Haney and he re flashed my ECM, but that still is a very strong Big Cam, I can't tell you enough how much I love those things.

 

yeap also run a lot smoother.

 

If you have a Fuller 9 speed, you can convert it to a 13.

Eaton​

Aftermarket Products​

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Features​

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Brand new auxiliary section with the
latest design improvements, including
an updated synchronizer, splitter section
and cylinder.​

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All the parts needed for the conversion
including the master (shift) valve, tubing
and shift decal.​

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Each kit contains step-by-step installation
and driver instructions.​

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No need to buy or replace the complete
transmission to get the flexibility and
economical performance of a 13-speed.​

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Conversion can be done in chassis for
less cost than buying a new or rebuilt
transmission. Simply change the transmission
auxiliary section, shorten the
drive shaft, and install the new
master valve.​

9-Speed to 13-Speed
Conversion Kits from Eaton.​

Improve resale appeal of used fleet trucks
with genuine Eaton Fuller Transmission
Conversion Kits.​

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9-Speed to 13-Speed Conversion Kits from Eaton.​

APSL-0189 11/01​

web
Printed in USA​

Eaton Corporation​

Roadranger Parts Marketing​

P.O. Box 4013
Kalamazoo, Michigan 49003
The Roadranger​

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® System is an unbeatable
combination of the best products from Eaton and
Dana – partnering to provide you the most
advanced, most trouble-free drivetrain in the
industry. And it’s backed by the Roadrangers – the
most experienced, most expert, most accessible
drivetrain consultants in the business.
For spec’ing or service assistance, call​

1-800-826-HELP ​

​

​

​

(4357) 24 hours a day,
7 days a week, (Mexico: 8-332-1515) for more
time on the road. Or visit our web site at
www.roadranger.com.​

Typical Direct 9-Speed​

Ratio
1.00
1.34
1.83
2.46
3.40
4.57
6.22
8.38
12.65
3.89
13.22
% Step
34%
36%
36%
38%
34%
36%
35%
31%
Gear
8th
7th
6th
5th
4th
3rd
2nd
1st
Low
Reverse-HI
Reverse-Low​

Typical Overdrive 13-Speed​

Ratio
.87
1.00
1.17
1.34
1.60
1.83
2.15
2.46
3.38
4.54
6.18
8.32
12.56
3.89
13.13
% Step
15%
17%
15%
19%
15%
17%
15%
37%
34%
36%
35%
51%
Gear
8th OD
8th DIR
7th OD
7th DIR
6th OD
6th DIR
5th OD
5th DIR
4th
3rd
2nd
1st
Low
Reverse-HI
Reverse-Low
Converting to an
overdrive 13-speed
results in a more versatile
and attractive
used truck.​

Conversion Chart​

Convert to​

RTO-9513
RTO-12513
RTO-11613
RTO-14613​

Kit Number​

K-2031
K-2032
K-2033
K-2034​

Current
Transmission​

RT-9509A
RT-11509
RT-12509
RT-11609A
RT-12609A
RT-14609A​

Copyright Eaton Corporation, 2001. EATON CORPORATION hereby
grants its customers, vendors, or distributors permission to freely
copy, reproduce and/or distribute this document in printed format.
THIS INFORMATION IS NOT INTENDED FOR SALE OR RE-SALE,​

AND THIS NOTICE MUST REMAIN ON ALL COPIES.