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Thread: ls1 with 5.3l heads?

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  1. #1
    Join Date
    Aug 2007
    Location
    Honeywood, Ontario
    Posts
    6,994
    You want 350 rwhp? I made 346 with Patriot 59cc LS6 heads and an EPS 222/226 cam, through stock manifolds and exhaust. Stock truck intake and TB too. You can find the heads used for less than a grand, everything to do the cam swap usually comes in around 1000, solid tune, go have fun. Add to my combo headers, decent exhaust it'd likely be around 375.

    My torque curve is as flat as a board too and it makes 300 ft lbs of torque from 2000 on up around 5000 where it peaked at 324 or 334, can't remember. Makes for a great DD, truck still averages 24mpg.
    2006 Silverado
    Little Black Bitch

  2. #2
    Join Date
    Sep 2008
    Location
    Arizona/Utah
    Posts
    3,939
    Quote Originally Posted by Frenchy View Post
    You want 350 rwhp? I made 346 with Patriot 59cc LS6 heads and an EPS 222/226 cam, through stock manifolds and exhaust. Stock truck intake and TB too. You can find the heads used for less than a grand, everything to do the cam swap usually comes in around 1000, solid tune, go have fun. Add to my combo headers, decent exhaust it'd likely be around 375.

    My torque curve is as flat as a board too and it makes 300 ft lbs of torque from 2000 on up around 5000 where it peaked at 324 or 334, can't remember. Makes for a great DD, truck still averages 24mpg.
    Need to consider the 9% drive train loss in an auto vs manual correct? 346 minus 9% comes down to 315ish. I agree your setup is sick tho. I am not really sure what the OP has for a trans to tell the truth.
    ECSB 2kSierra 2wd 4.8L-K&N-HPtuners-Calspeed LT's-Magnaflow-Tahoe20's-HankookRH06

    waiting to go in... 3.90s, 214/220cam

  3. #3
    Join Date
    Aug 2007
    Location
    Honeywood, Ontario
    Posts
    6,994
    Oh yeah the dyno numbers will be lower with the auto, but with a decent converter an auto truck, same combo as mine would put BUS lengths on my truck. Mine's embarrassing on the track, it's a roll racer and dyno queen.
    2006 Silverado
    Little Black Bitch

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