Author Topic: Difference in cummins engine?  (Read 4617 times)

Offline 601jack89

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Difference in cummins engine?
« on: January 24, 2015, 08:32:15 PM »
Hey guys thanks for the time and help.  I have a 1992 cummins that came out off a D250 and I am trying to rebuild it.  My question is what is the difference between the the 89-93 and the 94-98.5 engine? The rebuild kits I keep seeing for sale keep saying 94 and up. Also what "brand" rebuild kits are good and reliable?

Offline Engineer

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Re: Difference in cummins engine?
« Reply #1 on: January 24, 2015, 08:37:27 PM »
1994 was the year Cummins introduced the "P" pump. Regarded by most to be the best mechanical injection pump offered on the Cummins engine.

1998 was when they went to the four valve head.
2002 Chevy 2500HD 4x4 8.1/ZF6sp RC/LB
2001 Chevy 2500HD 4x4 6.0/4L85E EC/SB
1997 Chevy Blazer 4x4
1994 Chevy K-2500 4x4 C6P 5.7/4L80E
1979 Chevy K-30 4x4 4sp 4.10
1977 Chevy K-30 4x4 4sp 4.10 454

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Offline Engineer

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Re: Difference in cummins engine?
« Reply #2 on: January 24, 2015, 08:39:00 PM »
Oh, and having had NTC-350 Cummins "Big Cam" engines in the past I can only recommend original Cummins factory parts.
2002 Chevy 2500HD 4x4 8.1/ZF6sp RC/LB
2001 Chevy 2500HD 4x4 6.0/4L85E EC/SB
1997 Chevy Blazer 4x4
1994 Chevy K-2500 4x4 C6P 5.7/4L80E
1979 Chevy K-30 4x4 4sp 4.10
1977 Chevy K-30 4x4 4sp 4.10 454

Dad of an Eagle Scout, and a Life Scout

Offline 601jack89

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Re: Difference in cummins engine?
« Reply #3 on: January 25, 2015, 07:03:56 PM »
So there are no differences in the block?

Offline Irish_Alley

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Re: Difference in cummins engine?
« Reply #4 on: January 25, 2015, 08:54:40 PM »
block no but add ons yes. you can convert a ve pump (89-93) to a p pump
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Offline 601jack89

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Re: Difference in cummins engine?
« Reply #5 on: January 26, 2015, 08:50:30 PM »
Yea I new about the pumps and all the additional electronics after 1998.5 but I just wanted to make sure before I bought part.  Although the original cummins parts are outstanding are there any better performance brand names that would perform even better?
« Last Edit: January 26, 2015, 08:53:10 PM by 601jack89 »