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Thread: modified 5lt intake manifold

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    Default modified 5lt intake manifold

    stared off with a standard manifold cost $50 so not gunna hurt to much if it didn't turn out lol



    then plasma cut all the excess not needed, had to try not let it get to hot so it didn't warp










    start fabbing the plentum














    had to make sure inside was all smoothed out and entrences into runners were "bellmouthed" before putting the top on










    first fit up









    how it sits today





    so what do ya's reckon?

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    Nice job there. What else is done to the motor?

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    Quote Originally Posted by skruba View Post
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    thanks, not much internal wise slightly shaved heads, double valve springs, a rebuild, and remapped chip (done about 80,000k before i did the manifold) don't have any dyno sheets but it has alot better throttle response and torque. it also has rebuilt trans with kevlar belts corvette servo and stage 2 shift kit built for 800hp worth $3500, i was planning to turbo it but unfortunately she'll be up for sale soon cause need a more practical family car according to the missuse



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    While youve done a fantastic job there, thoses runners seem mighty short. 10" is usually as short as one normally goes. Those runners are mad for turbo and side mount super chargers though. That will allow you to run a ver large cam though.
    Quote Originally Posted by Blown V6 Hatch View Post
    Has ACL stopped making flat top pistons or something? Grinding a heap off the heads seems to be the latest fashion...
    Quote Originally Posted by Reaper View Post
    It's cheap and half arsed - perfect fit for a Commodore
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    soop is offline Banned
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    Quote Originally Posted by VrWagz1 View Post
    While youve done a fantastic job there, thoses runners seem mighty short. 10" is usually as short as one normally goes. Those runners are mad for turbo and side mount super chargers though. That will allow you to run a ver large cam though.
    I was thinking exactly the same thing.

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    Quote Originally Posted by vrclubby5lt View Post
    thanks, not much internal wise slightly shaved heads, double valve springs, a rebuild, and remapped chip (done about 80,000k before i did the manifold) don't have any dyno sheets but it has alot better throttle response and torque. it also has rebuilt trans with kevlar belts corvette servo and stage 2 shift kit built for 800hp worth $3500, i was planning to turbo it but unfortunately she'll be up for sale soon cause need a more practical family car according to the missuse
    I'd like to see proper side by side dyno comparison for that one. Better throttle response maybe however I'd be amazed if torque was any better what so ever.

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    Quote Originally Posted by skruba View Post
    practice makes perfect dude i was (still am) my bros guinea pig,he has been tattooing for near 2 years.

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    Default

    throttle responce may feel better but back to back there will be a torque loss down low and a hp increase up top, this design is nothing new and a few i have seen have tried them and lost to much down low that they went back to standard and sold off the custom one.
    Having said that you did some nice work fabing it up would be great for turbo or supercharged setup.

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    you realise that this was waaayyyyyyy back in febuary right.
    Quote Originally Posted by Blown V6 Hatch View Post
    Has ACL stopped making flat top pistons or something? Grinding a heap off the heads seems to be the latest fashion...
    Quote Originally Posted by Reaper View Post
    It's cheap and half arsed - perfect fit for a Commodore
    Reaper


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