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Thread: Best Cam for 4.8 L for significant hp gain?

  1. #11
    Join Date
    Sep 2008
    Location
    Arizona/Utah
    Posts
    3,955
    Yes you need new springs and hardened pushrods. The HU1 from sd parts is a great option 212/216 low lift I believe or anything under 220 duration should be fine. A 212/218 is great or the isky triple 12. Good mild cams. A proper tune cam and exhaust will get you around 325 to the flywheel.
    ECSB 2kSierra 2wd 4.8L-K&N-HPtuners-Calspeed LT's-Magnaflow-Tahoe20's-HankookRH06

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

  2. #12
    Join Date
    Sep 2010
    Location
    North East Ohio
    Posts
    278
    Pushrods, springs are required, Keep in mind that sounding fast and being fast are 2 different things unless your are willing to go all the way with other supporting mods (stall, Gears) You are fighting an uphill battle with 4.8 and torque. Ask me how I know.
    2010 Silverado 4.8 Ext Cab 4x4
    Cam, Stall, 4.88's

  3. #13
    Join Date
    Sep 2008
    Location
    Arizona/Utah
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    3,955
    Quote Originally Posted by Gus View Post
    Pushrods, springs are required, Keep in mind that sounding fast and being fast are 2 different things unless your are willing to go all the way with other supporting mods (stall, Gears) You are fighting an uphill battle with 4.8 and torque. Ask me how I know.
    You need to keep in mind this is most likely going in a much lighter weight 1960 2wd rcsb. He can likely handle a lot more can than your truck which weighs 1000+lbs more than this truck. This is also more of a toy. Your truck is a DD with truck activities like hauling and offroading. Being a street truck with out a stall I would again suggest the HU1 from scoggin dickies. Safe to run yellow springs which saves money and will run strong while sounding good too.
    ECSB 2kSierra 2wd 4.8L-K&N-HPtuners-Calspeed LT's-Magnaflow-Tahoe20's-HankookRH06

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

  4. #14
    Join Date
    Aug 2013
    Posts
    4

    Thumbs up

    Thanks for all the suggestions and yes this is going to be a toy. I'm going to run 3.73 gears, and I'm still researching a cam...... Sounds like the 212/218 comp camp .522 .529 with 114 LSA. Going to spend a bit more now, going with a 3400 and once the truck is running (April) I'm going to research turbos and or supercharger. Would this cam be a good match for 3.73s, 3400 stall and a supercharger ? Or should I go more aggressive? I thought I read something somewhere that said to keep the LSA down if you were going with a supercharger but I might be wrong. Truck overall maybe weights 3000 lbs.

    Thanks again for all the help guys !!!!

  5. #15
    Join Date
    Dec 2008
    Location
    South Carolina
    Posts
    795
    Iv got a comp xr275hr cam for sale. 222/224 .566/.568 112 lsa. It would run good with a 3400 stall. Pm me if your interested

  6. #16
    Quote Originally Posted by chvy=power View Post
    Iv got a comp xr275hr cam for sale. 222/224 .566/.568 112 lsa. It would run good with a 3400 stall. Pm me if your interested
    Is the 112lsa an issue with boost or is it more about overlap?

  7. #17
    Join Date
    Jan 2014
    Posts
    4
    what about a lq9 6.0 stock going with long tubes first. looking for best order to upgrade?

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