bigcam 3 400?

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    bigcam 3 400?

    1980 international 4300 with a bc3 400 13sp single axle 250k miles for 3600 bucks

    buy? pass? decent shape

    #2
    I have a very similar tractor with a small cam 400 13 speed dual rear axle. It’s old, loud and slow with 5.65 gears. But I love driving it.

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      #3
      Those old Big Cam Cummins engines are damn near indestructible. For a testament to that, all of the original M915s from 1979 had the Big Cam 2 NTC 400s in them. After decommissioning, they pulled the engines and rears, ran compression tests, and then put them in the M915A4 models with an additional bracket for a TPS to control the Allison in the newer ones.

      I was assigned an original one in 2000 with about 1.4 million military miles on it. It went to Iraq in 2003 after I left the unit, and allegedly stayed in theater running the MSRs until the uparmored tractors were fielded.
      Mrs CSR said I was good, or something.

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        #4
        its 425hp, is that slow?
        i thought theyre hot rod engine

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          #5
          Originally posted by montrose818 View Post
          its 425hp, is that slow?
          i thought theyre hot rod engine
          Can't use the HP rating for a calculation of speed. His example above has a really short rear, so its slow due to gearing limitations. The trucks I referred to above ran out of gear at 72 mph, and could pull a mountain pass in 14th or 15th (16 speed CAT 7155 trans) at 55 or 60 when fully loaded.
          Mrs CSR said I was good, or something.

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            #6
            I got that, but i meant is it a good pulling engine? sorry for wrongly phrased question

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              #7
              Originally posted by montrose818 View Post
              I got that, but i meant is it a good pulling engine? sorry for wrongly phrased question
              They definitely pull. HARD. One of the more popular engines back in the day, as you could run it on the limiter all day, every day, and had decent power and mpg at the same time. 1150 lb-ft IIRC.
              Mrs CSR said I was good, or something.

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                #8
                got it thnks! worth the 3600 you think???

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                  #9
                  Being a 1980, it either has been repowered, or its a BC2, not 3. The 3 came out in 1983, the 2 in 1979. Check the turbo... if its a T46, its a 2, if its a Holset HT3B, its a 3.
                  Mrs CSR said I was good, or something.

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                    #10
                    Originally posted by montrose818 View Post
                    got it thnks! worth the 3600 you think???
                    All day and night!
                    Mrs CSR said I was good, or something.

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                      #11
                      only 1150lb? isnt that low by todays stansards?

                      sorry for stupid phrased questions, multi tasking

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                        #12
                        thanks, aill go check it out then!

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                          #13
                          https://bakersfield.craigslist.org/h...141719104.html

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                            #14
                            looks like a million miles but recon motor. so mileage unknown

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                              #15
                              Originally posted by montrose818 View Post
                              only 1150lb? isnt that low by todays stansards?

                              sorry for stupid phrased questions, multi tasking
                              By today's standards, sure... but its also not trying to push past the emissions systems, either.

                              Here's a review that placed the 855 Big Cams at #2 on the best diesel engine of all-time listing

                              2. Cummins 855 Big Cam
                              Why We Love It: How could you not immediately fall in love with this engine from the name alone? Kind of rolls off the tongue eh?! The Cummins 855 Big Cam was the last real mechanical variable timing engine mass produced by Cummins in the 1976. The Big Cam replaced the small cam 855 and was the first engine by Cummins to meet the Clean Air Act and noise regulations of that time. There were four generations of the Cummins Big Cam 855 engines, last produced in 1985 and was replaced by the N14. We love the 855 Big Cam because of the raw horsepower it puts out as well as its reliability. You can easily run a Cummins 855 Big Cam 700,000 miles before an overhaul. The Cummins 855 Big Cam was the first engine by Cummins to utilize demand-flow cooling which only cools the engine when the engine demands it. This system then uses the saved horsepower at the crankshaft for more horsepower into the project at hand. The Big Cam II significantly upgraded performance by introducing pulse manifolds into the engines; these were a big selling feature in these engines at the time. Overall horsepower was the main reason this engine was a big seller over the small cam models. The Cummins 855 Big Cam had one of the largest camshaft diameters on the market at the time and features top-stop injectors. Talk to any old school truck drivers in the 1970s and they will tell you tales when the Cummins 855 series were the king of the road. Hard not to leave these engines off the best diesel engine of all time list. There were some drawbacks with the 855 specifically when trying to start the engine in colder climates. The 855 uses a lower pressure fuel injection system at 2,200 psi to power the injectors and varying timing specs, oil/water pump and valve spring pressures. That being said a glow plug or a shot of ether should do the trick to fix this simple issue because overall this is a great engine.

                              The Specs:
                              • Engine Type: Four Stroke, Six Cylinder, Inline
                              • Displacement: 856 ci (14 L)Best Diesel Engine - Cummins 855 Big Cam Picture
                              • Bore and Stroke: 5.50×5.98 in
                              • Fuel Delivery: Unit fuel injection
                              • Aspiration: Turbocharged
                              • Compression Ratio: 10:1
                              • Governed Speed: 1,800 rpm
                              • Maximum Power: Up to 605 hp
                              • Maximum Torque: Up to 1,118 lb-ft

                              Worst Cummins Engine: Cummins ISX

                              Why We Hate It: The Cummins ISX was originally released in 2001 which replaced the longstanding N14 engine of the late 80s and 90s. It was supposed to be the Caddalic and the best diesel engine every designed at Cummins. However that didn’t pan out exactly. The ISX was engineered with a dual overhead cam design; one cam accessed the valve train and the other took care of the actuating injectors. In 2002 the ISXCM870 integrated the Exhaust Gas Recirculation (EGR) which takes the exhaust gas and recirculates it back into the intake of the engine. What this does is lower the combustion chamber temperatures limiting the formation of NOx. A neat concept but there were many issues with this system that caused many engine failures. The main point of failure is the dual overhead cam design which overly complicated things and caused many snowball effect types of issues in the engine. Lastly, the early versions of the ISX had a whole host of issues with the ECM which caused a sour taste in many Cummins owners mouths. In 2010 Cummins re-designed the ISX with a single overhead design to simplify things but the damage was done. This was supposed to be Cummins entrance into the electronic world however it was much too complicated for its own good. It is rightfully so belongs off the best diesel engine list; disappointing indeed.
                              Mrs CSR said I was good, or something.

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