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383 sbc single t-76?

Discussion in 'LS1, LS2, LS6, LT1, SBC Turbo and other GM Specfic Turbo Tech' started by blown69nova07, Feb 23, 2014.

  1. blown69nova07

    Joined:
    Oct 31, 2012
    I just picked up a couple older Turbonetics T76 turbos, with Q trim wheels and .96 ar housings.
    My engine is a 383 sbc, 8 to 1 , TFS super 23, 230cc heads, Cammotion blower grind. 241/246 @ .050, mid 500 lift and 114 lsa.
    I also got two Tnetics deltagate mark 2 wastegates in the deal
    I'm probably going to go twins, but would one of these work for a street strip setup? My 69 Nova went 9.7 @ 139 with a YSi, I would like to go at least that.
    Any help/comment are appreciated.
    Thanks, Steve
     
    blown69nova07, Feb 23, 2014
    #1

  2. leeperryracing

    Joined:
    Oct 16, 2009
    One is little small for a 383, use both. Depending on the rest of the setup it could be laggy or be just fine.
     
    leeperryracing, Feb 23, 2014
    #2

  3. jay_rich

    Joined:
    Feb 14, 2008
    You will be having some serious back pressure issues at upper RPM with that. My buddy has a 7868 Turbonetics on the 370 LQ and he keeps destroying head gaskets and heads at the track. It will spool instant on the street but I wouldnt plan on winding it out too high. I think my buddy also shifts around 7300ish through a TH400 on his 370...

    Jay
     
    jay_rich, Feb 24, 2014
    #3

  4. M&M Turbochargers

    Joined:
    Jan 31, 2011
    we could get some smaller turbine housings if you get it together and spools to slow with the twins

    or we could get you a single s475 for about 650.00
     
    M&M Turbochargers, Feb 24, 2014
    #4

  5. blown69nova07

    Joined:
    Oct 31, 2012
    I'm thinking about some undivided, .81, tang housings. could I get some prices?
    I also need a compressor wheel. Turbonetics pn 21353.
    Are the housings and wheels turbonetics only, or are they re-branded Garrett?
     
    blown69nova07, Feb 24, 2014
    #5

  6. leeperryracing

    Joined:
    Oct 16, 2009
    If that 383 was at least 9:1cr or higher, both those turbos with q-trim wheels and .96ar would work with a good tune.
     
    leeperryracing, Feb 24, 2014
    #6

  7. blown69nova07

    Joined:
    Oct 31, 2012
    Well, I got some .68, tang housings, and some updated comp. wheels (one had a small chunk missing). They are q-trim wheels too.
    I want to run pump gas, that's why I went with 8.2 comp. Do you think with the right cam, it's going to work?
     
    blown69nova07, Mar 6, 2014
    #7
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