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How much HP out of a 4.6 compared to a 5.0

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Old 10-10-2008, 04:11 PM
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jayel579
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Default How much HP out of a 4.6 compared to a 5.0

Hey guys-

I am kind of new to the 4.6L motor in an SN-95 chassis. I wanted to know what kind of power I can get out of the motor with very basic mods. By basic mods I mean, only full exhaust, throttle body forward and some kind of tune. Absolutely zero internal motor or intake work. There are reasons why I cannot do any internal motor work but I wanted to know if a 4.6 motor would be better suited then to a 5.0. I am only looking to get around 300 hp so I don't think I am asking a lot, I was just wondering what motor would be easier to get the power out of that I am looking for.

Any thoughts or suggestions would be appreciated
Thank you
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Old 10-10-2008, 04:15 PM
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SVTeeshirt
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go 5.0, Put a cam in the 5.0 very easy to do and very inexpensive, you can get a very nice cam for under $400, might wanna the full H/C/I in a 5.0 which will be cheaper than a 4.6 and with H/C/I + exhaust in a 5.0... im not sure how close you would actually be to 300 but stock they are rated at about the same as NPI 4.6L, however PI 4.6s are a bit quicker, in my book it goes like this

PI 4.6>5.0>NPI4.6
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Old 10-10-2008, 04:18 PM
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defconfire
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Usually you get around 250 rwhp. with basic bolt-ons, cams will get you 280+, and a fully built engine tops out at around 330-350 rwhp
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Old 10-10-2008, 04:24 PM
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avlon06
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pat you stay with your 283rwhp tune?
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Old 10-10-2008, 04:36 PM
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silverstang1996
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Originally Posted by SVTeeshirt
go 5.0, Put a cam in the 5.0 very easy to do and very inexpensive, you can get a very nice cam for under $400, might wanna the full H/C/I in a 5.0 which will be cheaper than a 4.6 and with H/C/I + exhaust in a 5.0... im not sure how close you would actually be to 300 but stock they are rated at about the same as NPI 4.6L, however PI 4.6s are a bit quicker, in my book it goes like this

PI 4.6>5.0>NPI4.6
I hope you mean its only better stock for stock (PI 4.6>5.0) 5.0s when built up make very good powuh, hah
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Old 10-10-2008, 04:40 PM
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^ yeah they do and you can s/c 5.0s for next to nothing compared to mod motors..
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Old 10-10-2008, 04:47 PM
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defconfire
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Yeah I'm at 283 rwhp with my stage ones since then I added a plenum and t/b so it may be a little bit higher.
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Old 10-10-2008, 06:43 PM
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myslow2002gt
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Originally Posted by defconfire
and a fully built engine tops out at around 330-350 rwhp
I don't know who's building that then....


I expect ~360rwhp on my pump gas N/A 2V for the 96 GT.
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Old 10-10-2008, 08:37 PM
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silverstang1996
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well that all depends on how well you built the car. Only way to find out is bring it to a dyno someday
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Old 10-10-2008, 08:58 PM
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2000GT4.6
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Originally Posted by myslow2002gt
I don't know who's building that then....


I expect ~360rwhp on my pump gas N/A 2V for the 96 GT.
expect to be disappointed then.
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