Thread: Going for 300whp NA

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  1. #1 Going for 300whp NA 
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    I posted this over at 60degreev6 but I thought I'd repost it here so u guys can chime in on things also

    I have bought a 96gtp that had bad heads from the valves being bent by the broken timing belt. I have since gotten another set of heads surfaced and pressure tested. I have ported and gasket matched both sides of the heads.

    As I was thinking about the job ahead of me of replacing said heads I thought I'd also throw on my ported lower manifold and custom short runner upper plenum with a northstar 75mm throttle body.

    Then I started researching and all I can find out is that most people go boosted when they want to get power from these motors. So me having a love for these motors but not wanting to be like everyone else, have decided to build a NA one just to see how much a person can get out of one.

    I have a set of SLR reground cams and will be putting those into a set of 97 cam carriers, and milzy has emailed me back saying that he does still offer 3.4 Dohc headers. So next month when my taxes get back I will be ordering them. I will also be ordering hptuners as then I can tune my Fiero (also 3.4 Dohc) and my Gtp.
    I have a FFP UDP, and I have quoted a set of 11 to 1 high compression pistons out from je pistons ( and can get them pretty cheap because I know some of the people who actually make them). I will also be balancing and lightening the whole rotating assembly. I will also be running e85 with 42.5lb injectors

    I'm hoping to get 300whp with this setup. Through a 4t65e trans.


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    Last edited by gambler87; 02-02-2014 at 10:03 PM.
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  2. #2 Re: Going for 300whp NA 
    GTX Level Member TEK310's Avatar
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    sounds like fun. i had a 05 impala i was gonna mod to make some power like this. then i wrecked it.

    i think it was the car gods trying to tell me something
    2012 Competition Orange Boss 302 #1769 438rwhp 391rwtq
    intake - off road h pipe - e85 - tune
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  3. #3 Re: Going for 300whp NA 
    GXP Level Member Grimsin's Avatar
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    3.4 in the impalas werent dohc though.
    If it was a 3.8 impala nevermind my conment.
    I'm slowly making my 3.8l n/a more powerfull year by year lol.
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  4. #4 Re: Going for 300whp NA 
    Donating Users 16MustangVet's Avatar
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    300 at the engine maybe 300whp na i think your going to need more compression if your using e85 why not go over 11:1?
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  5. #5 Re: Going for 300whp NA 
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    Because if I go out of the Midwest e85 is hard to come by

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  6. #6 Re: Going for 300whp NA 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    HP tuners does not support the 3.4 DOHC motor.

    SMGPFC Member #1
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  7. #7 Re: Going for 300whp NA 
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    300whp N/A with the Lq4... through a 4T60e?
    Good luck.

    I had just about everything available for that engine and through a Getrag 284 it still only made 225whp.
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  8. #8 Re: Going for 300whp NA 
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    There has been multiple people with just the SLR reg rinds and the 96+ intake swap that have put down 230hp through a getrag 282. And it would be a LQ1. Not a ****ty vortec v8

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  9. #9 Re: Going for 300whp NA 
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    Quote Originally Posted by Fivefingerdeathpunch View Post
    HP tuners does not support the 3.4 DOHC motor.
    Thank u for the info

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  10. #10 Re: Going for 300whp NA 
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    Hes using a 3.69 geared 4t65
    Quote Originally Posted by SnowFlake View Post
    300whp N/A with the Lq4... through a 4T60e?
    Good luck.

    I had just about everything available for that engine and through a Getrag 284 it still only made 225whp.
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  11. #11 Re: Going for 300whp NA 
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    I meant LQ1. I was modding that motor 10 years ago.
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  12. #12 Re: Going for 300whp NA 
    Donating Users 16MustangVet's Avatar
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    Reguardless of gears or trans i doubt it makes 300 at the crank na
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  13. #13 Re: Going for 300whp NA 
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    May I ask what mods u had snowflake or a link to your build thread?

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  14. #14 Re: Going for 300whp NA 
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    It makes 215 at the crank stock

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  15. #15 Re: Going for 300whp NA 
    #Billsnamechangessuck MrPoopyButthole's Avatar
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    I'm with some of the others...maybe 235-240whp TOPS

    This isn't a VQ35

    Cry havoc and let slip the dogs of war.
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  16. #16 Re: Going for 300whp NA 
    GTX Level Member Neil98gt's Avatar
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    300whp is some wishful thinking.

    and why would you want to make 300whp with a 4t60e?
    98 GT 2dr 116k, Sold
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  17. #17 Re: Going for 300whp NA 
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    Quote Originally Posted by gambler87 View Post
    May I ask what mods u had snowflake or a link to your build thread?

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    I'd show ya a build thread but the forums I was on are all offline now.
    Frankly I don't even remember the names of the forums.

    I had everything available to the car in 2003-2004.
    I was also good friends with Mike who owned FFP.
    My car was actually one of the first two to get his UD pulley, motor mount, and chip.
    IIRC Dykz34 got the first set.
    Last edited by SnowFlake; 02-02-2014 at 09:57 PM.
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  18. #18 Re: Going for 300whp NA 
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    Again not 4t60, hes swapping in a low geared 4t65
    Quote Originally Posted by Neil98gt View Post
    300whp is some wishful thinking.

    and why would you want to make 300whp with a 4t60e?
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  19. #19 Re: Going for 300whp NA 
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    Thanks for the help to make sure that everyone knows what is going on L67ss, but I think I will just let this go dormant here and keep up on the other two forums that it is posted on. Not getting any good input here anyhow

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  20. #20 Re: Going for 300whp NA 
    GTX Level Member Neil98gt's Avatar
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    Well in the OP he states he will be using a 4t60e...

    Im im sure you could see why I was confused.
    98 GT 2dr 116k, Sold
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