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lt1 build questions

This is a discussion on lt1 build questions within the Internal Engine forums, part of the LSx Technical Help Section category; I have a 1993 trans-am im building the motor for now. My plans are .30 over with flat tops, better ...

  1. #1
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    lt1 build questions

    I have a 1993 trans-am im building the motor for now. My plans are .30 over with flat tops, better intake, tune and throttle body. already has headers, and flows.

    My first question is

    what kind of cam? didnt see much choices at tsp. was looking at the comp 224/230. would this work? how would it idle.

    and is this gonna kill gas mileage if it idles rough?

    thanks in advance.
    Last edited by dirttrax; 02-05-2010 at 12:16 AM.

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    Senior Member bigrondownhiller's Avatar
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    There is very few choices on intakes. Are you going to port the stock heads or go aftermarket? What exactly are you primarily using the car for? Do you have a power goal?

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    Senior Member JaycenK's Avatar
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    Have the stock LT1 intake cleaned up. It flows more air than the Edelbrock air gap. Someone did a test and they took a stock untouched intake V's the Air gap and ran them on the same motor with ported and pollished heads. The stock made more power than the air gap. The air gap lost HP and only gained 2 or 3 ftlb torque

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    What I do? SHines-IT's Avatar
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    Quote Originally Posted by JaycenK View Post
    Have the stock LT1 intake cleaned up. It flows more air than the Edelbrock air gap. Someone did a test and they took a stock untouched intake V's the Air gap and ran them on the same motor with ported and pollished heads. The stock made more power than the air gap. The air gap lost HP and only gained 2 or 3 ftlb torque
    I was told to upgrade to the LT4 intake, is that any better?

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    Yes i meant having the stock one opened up for 58mm, main concern is what cam. This is a daily driver and of course want all the power i can get, lol would like a rough idle if it wont kill gas mileage, dont know if that affects it or not. Thats why im asking. thanks in advance

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    Senior Member JaycenK's Avatar
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    Lt4 is specific to an lt4 head. The ports on an LT4 and the angle of the intake flange is different. If you have to have it you have to have it.
    Last edited by JaycenK; 02-05-2010 at 07:38 PM.

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    Senior Member JaycenK's Avatar
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    your talking about lobe when you say rough idel I belive so what you look at is the LSA on the cam. the smaller the LSA the more lobe it has but there is a point that you really screew up on the cam if you get to much over lap. I can't say I'l let someone else talk cam specs for good preformance with lobe.

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    Senior Member bigrondownhiller's Avatar
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    Call up a cam manufacturer. When you give them all your info and what you want out of it they can recommend a cam for you. Do you have an auto or M6?

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    Senior Member JaycenK's Avatar
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    +1

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    can anybody recommend whats the best headers as well for 96 lt1 new to this site and basically looking for same thing but im short of what kind of exhaust I should go for

  11. #11
    Spaz is My Mentor SMWS6TA's Avatar
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    IIRC you want something like this: LT4 heads


    LT4 Heads | eBay

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