The "red top" refers to the red valve covers, used on N14 Cummins engines, factory set at 460 or more horsepower. It was used to indicate a "high horsepower" engine. Lower horsepower engines had black valve covers. In the later 1990s, the 435 horsepower settings also got red ones.
The Cummins N14 engines could be had in horsepower ratings from 310 to 525 horsepower. The red top engines were those rated at 435 horsepower or higher.
The STD model is mechanical, the Celect and Celect Plus models use electronic controls.
The red top engines left the factory rated at 435 horsepower or more (up to 525). The black ones were typically 330 - 400 horsepower.
The stop engine light might not come on on your N14 Cummins when the switch is off.
oil pressure sensor location n14
how do you change seal on the accessory drive N14red top
n14 celect 38 quarts and n14 celect plus is 41 quarts
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What is the cam endplay on a n-14 cummins
Cummins N14 Engines were created for World War I fighter planes which were involved in something called dogfights. These engines were lighter and faster.