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6.0 dyno with new heads

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Old 02-02-2010, 02:13 PM
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Default 6.0 dyno with new heads
I went and re dynoed my truck with the prc stg 2.5 heads and I'm pretty pleased. The before peak numbers were 376hp and 357tq, the after are 397hp and 389tq. The increase in the whole power band is what I like, in some places I gained over 50 ft lbs and 35hp. Its going too lean at 5500 up and I need to add some fuel.
Attached Thumbnails 6.0 dyno with new heads-dyno-1-.jpg   6.0 dyno with new heads-dyno-2-.jpg  
Last edited by dlt76028; 02-02-2010 at 11:23 PM.
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Old 02-02-2010, 02:44 PM
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I wonder if your running out of fuel.... I would get a fuel pressure gauge on it to verify... I have one at my house if you need to borrow it...
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Old 02-02-2010, 02:44 PM
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impressive gains BTW!
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Old 02-02-2010, 04:21 PM
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Nice david! i wonder how it will run at SAR?
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Old 02-02-2010, 04:31 PM
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Very Nice David,What injectors are you running?
You definatly need more fuel at 5400+
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Old 02-02-2010, 04:34 PM
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Originally Posted by f4tal
Nice david! i wonder how it will run at SAR?
hopefully good.
Originally Posted by Wheatley
Very Nice David,What injectors are you running?
You definatly need more fuel at 5400+
hey charlie, funny thing I just went and changed my fuel filter, and it has been in backwards for 35,000 miles. think i'll pick up some pressure? injectors are marine 8.1s
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Old 02-02-2010, 04:39 PM
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damn, I'm surprised you did as well as you have with it backwards. The filter usually has a huge arrow on it pointing towards the engine.

Very good # BTW.
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Old 02-02-2010, 05:53 PM
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that some nice gains and nice numbers.. wat were the heads on there previously?
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Old 02-02-2010, 06:47 PM
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wow very impressive
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Old 02-02-2010, 07:24 PM
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Originally Posted by dlt76028
hopefully good.


hey charlie, funny thing I just went and changed my fuel filter, and it has been in backwards for 35,000 miles. think i'll pick up some pressure? injectors are marine 8.1s
Oh no,LOL That sucks.Yes they are meant to flow in 1 direction so it can effect it.
Yes your injectors should be perfectly fine!!
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