Help Me Plan the Race Build: Twin Turbo 455

Discussion in 'Race 400/430/455' started by TheEternalDance, Jan 15, 2021.

  1. hugger

    hugger Well-Known Member

    Those 66mm on a 500hp engine at 8lbs will make 750ish
     
  2. hugger

    hugger Well-Known Member

    The dual quad off yes,..BDS does a beautiful job much better than Hampton
     
  3. Bens99gtp

    Bens99gtp Well-Known Member

    Sexy sexy
     
  4. sean Buick 76

    sean Buick 76 Buick Nut Staff Member

    Yes I’m
    Familiar with turbo camshafts, but it’s best to have a custom grind made. I use Scotty for my cams. I run a twin turbo Buick 350 so message me if you want more advice
     
  5. sean Buick 76

    sean Buick 76 Buick Nut Staff Member

    Any updates? Post pics of the car! I’ve seen it before I almost bought it...
     
  6. Bens99gtp

    Bens99gtp Well-Known Member

    You will love scotty cam grinds.....don't bench race as comparing numbers to box stk big companies......cause his numbers are sometime very different......but his will work better I promise you
     
  7. sean Buick 76

    sean Buick 76 Buick Nut Staff Member

    Agreed, I didn’t even talk numbers when I talked with him to spec my cam. I simply explained what I was doing with the car, gearing, weight, turbos, etc and he worked his magic.
     
    patwhac and Max Damage like this.
  8. Bens99gtp

    Bens99gtp Well-Known Member

    Thats what I do, but sometimes you can't bench race his final numbers cause they sometimes look drastically different than what we are used to seeing......but im sure that's why his cams work drastically better!!!!@
     
    sean Buick 76 likes this.
  9. TheEternalDance

    TheEternalDance Well-Known Member

    Not a lot of updating to do, unfortunately - but I can't resist talking about it. :D

    If you're familiar with the car then you know I bought it as a roller and have been working on planning the power plant build-up. Long term, there will be a big stroker Tomahawk feeding the twin turbos. BUT there's another project I am still finishing that has taken all of my free time (and drawing out that Tomahawk build...) which I have yet to post about, but will hopefully get to soon - quick teaser: 1970 GSX Stage 1 4-speed that's getting a TSP-built 482 stuck in it - here's to fingers crossing it'll be ready for May!

    On the Skylark build, I found two running blue blocks I picked up some months ago and tore one down. Back from the local machine shop just a few weeks ago and short block checked out okay. Sonic check was okay but not as stout as I was hoping. Interim plan is to build that block up with parts I'll end up throwing on the Tomahawk. TA Stage 2 TE, TA SP2, CSU carb/hat, and thanks to all your guidance, looking like a scotty cam grind. Any specific recommendations for pistons with boost? For or against?

    Once the GSX is up and running the Skylark will be getting much more attention, but in all honesty it's likely going to be 2022 before the Skylark sees the road again :(. But when it does... :cool:
     
  10. sean Buick 76

    sean Buick 76 Buick Nut Staff Member

    All good I understand, my turbo Skylark has been parked for a few years waiting for me to get life and other cars in place. Any good forged pistons will be fine. Plus I wouldn’t worry too much about getting zero deck (piston flush with deck) with boost it’s less vital vs NA.
     
  11. hugger

    hugger Well-Known Member

    Hard to beat JE for Pistons
     
    sean Buick 76 likes this.
  12. sean Buick 76

    sean Buick 76 Buick Nut Staff Member

    Agreed, diamond is also very good.
     
  13. patwhac

    patwhac Well-Known Member

    I don't know if this helps at all, but when I bought my custom cam from Scotty Brown here's what he spec'd for my twin turbo build. Keep in mind though that it's for a Buick 350 that I aim to run only 6 - 8psi since it's an otherwise stock engine. Unfortunately I'm still working on it so I can't report how well that cam works yet!

    [​IMG]
     
  14. TheEternalDance

    TheEternalDance Well-Known Member

    Wicked! Thanks for the suggestions and intel - all great to keep the plan going.
     

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