Quote:
Originally Posted by 68K20 x Drill
All the Cummins Engines are direct injected diesel fuel into the combustion chamber.
Up to 1988 1/2, the fuel system is mechanically controlled, needing only power to the injection pump to run. Newer trucks use a computer. In factory form most need a tach signal, or they shut down.
Dodges come with a weaker Getrag 5 speed, stronger NV4500, or even stronger NV5600
or a 4 speed auto that has the same issues as all work truck autos.
Grumman GM step vans have a 4 cyl version of the same motor, and use a TH400 or SM465.
96-98 3/4 ton Diesel Dodges with a stick shift can get 25+ MPG, and put out
in stock trim, and 300HP/600FtLB is not extreme, so towing is not a problem but you may lunch a stock tranny after awhile.
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The cummin's engine was actuly sill a mechanical injection system 89-93,the early cumputers controlled converter lockup, and the intake heater. The engine will still run with just one wire. In 94 Cummins chanjed injection pumps to a p7100, this pump has the ability to produce some serious HP, the injectors are also different and the computer plays a few more rolles with the trans, and emition systems. In 1998 1/2 Cummins went fully electronic, and to 24 valves. With the later engines you install fuel and timing boxes to the computer to rais power levels. I run a 93 that has a stock turbo, 4" exhaust and the pump is turned up. it has way more torque than the big block 402 had and gets 18-20mpg with 37" tires.