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Best Parts for my application

This is a discussion on Best Parts for my application within the Internal Engine forums, part of the LSx Technical Help Section category; Hi, I was wondering if i was to change my 350 cid LS1 engine into a 383 stroker what would ...

  1. #1
    GMaugie45
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    Best Parts for my application

    Hi, I was wondering if i was to change my 350 cid LS1 engine into a 383 stroker what would be the best heads, cam, and the best size of fuel injectors to make the engine run great, have over 400 hp and still get ok fuel economy. I appreciate the help a lot, thank you.

  2. #2
    Slow'er'Ass Mr. Luos's Avatar
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    Red Tint Jewelcoat
    2008 Trailblazer SS

    You can easily make 400 RWHP with the stock cubed LS1 and a good cam. Tune would be needed as well.
    2008 Trailblazer SS
    Yank PTB3600, Kooks 1 7/8" LT's, 4" intake, E-fans, Magnaflow, Sonnax kit, tranny cooler, tune.
    Lowered, HID's, tinted.

    1999 Pontiac Trans Am WS.6 #1747 SOLD
    531.1 RWHP 481.3 FT/Pounds all motor.

  3. #3
    Senior Member ninobrn99's Avatar
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    Pewter
    all bore 370 Trans Am

    the ls1 (346) can easily make close to or over 400 cam only on stock cubes and still have good gas mileage. Its all about the tune.

  4. #4
    member since may 2000 nhraformula's Avatar
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    2000 nhra edition formula

    Quote Originally Posted by GMaugie45
    Hi, I was wondering if i was to change my 350 cid LS1 engine into a 383 stroker what would be the best heads, cam, and the best size of fuel injectors to make the engine run great, have over 400 hp and still get ok fuel economy. I appreciate the help a lot, thank you.
    heads would be the AFRs. cam depends on if you want it streetable or not.
    with a 224 cam, headers, ls6 intake , lid, and tuning, im putting down 379 rwho.
    2000 nhra edition formula
    a few bolt ons, 379 rwhp
    11.96 @113.25

  5. #5
    BlackHawk T/A
    Guest
    Heads, cam, and cubic inch increases will affect your mileage greatly, if you are concerned about that I would build it up on 346ci.

  6. #6
    Member silverTA2002's Avatar
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    silver
    2002 Pontiac Trans Am

    Yeah, if you only want 400hp, you don't need to turn it into a stroker.

    It kinda comes down to POWER vs. Fuel economy. With our cars, you do get an impressive amount of both. But, when you increase power (unless you do it by removing restrictions), you have to get the power somewhere. It takes fuel to make power.
    2002 Trans Am 6sp, SLP lid, Holley filter, Shaner S3 TB, Jet Hot long tubes and cats, FRA, HP tuners, Hotchkis STB and LCAs. TEA stage 1.5 5.3 heads, Comp 220/224 114 +2, UMI Boxed SFCs, Edelbrock PHR. Moser 9" 4.11 gears.

    **FOR SALE**: http://www.ls1.com/forums/f38/fs-02-silver-t-heads-cam-headers-9-fl-60478/

  7. #7
    Impounded eddierox's Avatar
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