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Old 05-26-2017, 10:30 PM   #1
cut7

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145° or 155°

All other things being equal, is there any power difference (at the street level) between 145° and 155° injectors? Yes, I know you have to have pistons to match the injectors, but I have to rebuild my motor anyways. And there doesn't seem to be much of a price difference between the two different pistons.
 
Old 05-26-2017, 10:49 PM   #2
95cummins5.9
 
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Just run the wide bowl and you can run either injector.
 
Old 05-27-2017, 12:16 AM   #3
cut7

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Yes I'm aware of that, however that doesn't really answer my question.
 
Old 05-27-2017, 07:16 AM   #4
jasonc

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My experience has been 155's have made more power, even on stock pistons. 145 would run and idle cleaner.
 
Old 05-27-2017, 10:50 AM   #5
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Quote:
Originally Posted by jasonc View Post
My experience has been 155's have made more power, even on stock pistons. 145 would run and idle cleaner.
What he said.
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Old 05-27-2017, 12:49 PM   #6
cut7

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Quote:
Originally Posted by jasonc View Post
My experience has been 155's have made more power, even on stock pistons. 145 would run and idle cleaner.
How much more? And I must say, this is a street truck, idle & low-end are very important.
 
Old 05-28-2017, 09:54 AM   #7
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If idle and low end are that important, no doubt a 145*
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Old 05-28-2017, 10:51 AM   #8
jasonc

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How much more? And I must say, this is a street truck, idle & low-end are very important.
Personally I didn't think it was that bad, mostly when it was cold. I went from a set of honed out 370's to a pair of 145 5/14's, truck ran good but definitely was a loss of power. Went back to a set of 155's.
 
Old 05-28-2017, 11:41 AM   #9
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Having the larger, 155* piston bowls from the factory (non-intercooled engine), my engine runs very clean at idle and in the low end with honed 370s. Speaking from the VE side of things, majority of the time, they like a bump in the static/base timing to help clean up the idle haze, if any. My pump is custom but the static timing is set to factory and has no haze at idle.
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