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horsepower

This is a discussion on horsepower within the General Help forums, part of the LSx Technical Help Section category; How much horsepower can you get out of a ls1 5.7 block naturally aspirated?...

  1. #1
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    horsepower

    How much horsepower can you get out of a ls1 5.7 block naturally aspirated?

  2. #2
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    Black & Blue
    '02 WS.6 / '07 Suburban

    North of 500 with a good cam and heads.

  3. #3
    None Shall Pass Knight's Avatar
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    99 WS.6 - Modified

    Trickflow sells a kit rated at 515 hp and 460 tq. Add on a good intake and exhaust, plus some other bolt ons, and you'll be well into the 500 hp mark.

  4. #4
    Moderator 35th-ANV-SS's Avatar
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    02 35th LE Camaro SS

    Are we speaking of crank HP or rear wheel HP? Big difference there. I assume you guys are talking about HP at the crank.

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    '02 WS.6 / '07 Suburban

    Good point. I was talking crank horsepower.

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    None Shall Pass Knight's Avatar
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    99 WS.6 - Modified

    Same here.

  7. #7
    Sold: LS1 '85 El Camino ls1camino's Avatar
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    2000 Grand Prix GTP
    2000 Trans Am WS6 M6

    I got 445whp/395wtq with a cheap set of 5.3L heads and a mild cam (Torquer V.2). With an MS4 and a nice set of AFR heads, I'm confident you could see 500+ whp.

  8. #8
    Junior Member chevuman260's Avatar
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    white
    2001 Z28

    Figuring driver train loss thru a A4 i am around 570 hp at the crank.
    2001 Camaro Z28 - AFR210 V2 Heads, JPH Cam, Fast 102mm intake, TS 100mm MAF, NW 102 TB, FTP 104mm lid, kooks 1 3/4 Long tubes, custom Y pipe w/dump, BMR LCA,TQ. Arm,PH bar, lca bracket,k member, Upper/Lower A arms, AFCO shocks
    11.20@120MPH
    459 RWHP and 410 RWTQ

    2009 Stryker Blue Pontiac G8 GT

  9. #9
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    yellow
    2004 pontiac gto

    i have a torquer 2 and longtubes with a custom 3 1/2" exhaust. i am at 400rwhp and 398rwtq. stock intake, maf, heads, and internals.a good set of stock 5.3 heads are good for 30 to 40 hp. fast 90 intake is good for 30 to 40 hp gain. i am in the process of forging another ls1 and doing a custom turbo build with a custom built intake. it should be close to 700 to 800 rwhp. turbo is a 85mm. i am going to put my n/a engine in my son's 280z.

  10. #10
    Moderator 35th-ANV-SS's Avatar
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    02 35th LE Camaro SS

    Like mentioned, it can be achieved. Depends how much you want to spend and how driveable you want the car on the street.
    It's on jackstands.

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