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  1. #1
    Join Date
    Mar 2016
    Posts
    105

    Supercharged LS3 headers ????

    I have my LS3 VF R8 supercharged with an LSA blower and it has hurricane 1&3/4 headers , will I benifit in power changing to 1&7/8 headers ????? Cheers

  2. #2
    Join Date
    Jun 2013
    Location
    Sth West Syd ��
    Posts
    1,360
    I changed from 1 3/4 to 1 7/8 hurricanes and jumped from 379 - 411rwkw with a retune on the same dyno. Guess it comes down to how far it was tuned on the current headers as mine was conservative due to restricted flow.

  3. #3
    Join Date
    Apr 2016
    Location
    Melb Vic
    Posts
    96
    I run the GM Motorsport 2 inch long tube headers with 3 inch cats with a twin 3 inch xforce system. makes 475rwkws. not overly loud either until you step on it.

    http://www.ramjet.com.au/exhausts.html

    http://www.gmmotorsport.com.au/produ...-and-Cats.html
    # 065 Senator signature E2

    I've spent a fortune on booze, birds and fast cars the rest i've just squandered.

  4. #4
    Join Date
    Mar 2016
    Posts
    105
    Ok I have 380 RWKW , the lower pulley is a powerbond 22% overdrive and bigger injectors and full 3 inch hurricane exhaust , stock GTS intercooler system so I am guessing it could get a power increase with the bigger headers & a retune ... thanks for the replies blokes .... cheers Chris

  5. #5
    Join Date
    Apr 2016
    Location
    Melb Vic
    Posts
    96
    Yes for sure more flow more power especially on a supercharged application like you have how much will be upto the tuner.
    # 065 Senator signature E2

    I've spent a fortune on booze, birds and fast cars the rest i've just squandered.

  6. #6
    Join Date
    Jan 2017
    Location
    Melbourne
    Posts
    27
    Hi mate,

    I want to do this to my car was this much more cost affective than buying a harrop supercharger kit?

    And if so can you point me in the right direction on where you sourced everything from?

  7. #7
    Join Date
    Mar 2016
    Posts
    105
    Hi bud , ok I paid $5500 for the supercharger complete ,it was off a crate engine , and the intercooler items I used the factory HSV GEN F PARTS , which were expensive, and the upgrade injectors and 22% balancer ,so all up with a tune it was $11000 fitted tuned and modded .... I love it

  8. #8
    Join Date
    Mar 2017
    Posts
    117
    Quote Originally Posted by Silverfox666 View Post
    Hi bud , ok I paid $5500 for the supercharger complete ,it was off a crate engine , and the intercooler items I used the factory HSV GEN F PARTS , which were expensive, and the upgrade injectors and 22% balancer ,so all up with a tune it was $11000 fitted tuned and modded .... I love it
    That seems like a lot of $ just to fit the blower and tune it? I was looking at going down the same path.

  9. #9
    Join Date
    Jan 2004
    Location
    Perth, WA
    Posts
    7,044
    I'm sure I've said previously add 5k to whatever price to get it in and running. It doesn't just bolt on to an LS3. There's a lot of little bits and pieces that need moving or modifying to make it work. Just the way the heat exchanger lines come out of the LSA compared to how they would mount on an LS3 doesn't work so you need different fittings or need to change things. Can't remember if it's the heater hoses or fuel rail that fouls but something definitely does. Same with the actual heat exchanger, the fittings hit the radiator/condenser or trans cooler or something...There's a lot of little things like that and if you're using a shop that's never done the install before, it will take a lot of time to work thru each issue.

    Tune alone will be the best part of 1000-1500.
    Everyone I know that's done it, has spent 10k to get it in and running.

  10. #10
    Join Date
    Jun 2015
    Location
    Perth WA
    Posts
    129
    Quote Originally Posted by Silverfox666 View Post
    Hi bud , ok I paid $5500 for the supercharger complete ,it was off a crate engine , and the intercooler items I used the factory HSV GEN F PARTS , which were expensive, and the upgrade injectors and 22% balancer ,so all up with a tune it was $11000 fitted tuned and modded .... I love it

    What size injectors are you running.
    VF GTS, 22.5% overdrive pulley, 2" primary 4-1 extractors on to twin 3" exhaust, Cold Air, 160 deg thermostat, Cam, double valve springs, 65lbs injectors. 649 rwhp.







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