Black Cherry Buick Build

Discussion in 'Street/strip 400/430/455' started by 1969RIVI, Jun 24, 2021.

  1. sean Buick 76

    sean Buick 76 Buick Nut

    Yes 100%, just be sure you have enough room to spin the Dist either way to adjust the timing.
     
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  2. 1969RIVI

    1969RIVI Well-Known Member

    Ok awesome! Yes, I made sure I had enough slack in the wires to swing the dizzy either way a few inches
     
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  3. sean Buick 76

    sean Buick 76 Buick Nut

    yup your good. I see a lot of people get mixed up about this, but you are correct.
     
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  4. Mark Demko

    Mark Demko Well-Known Member

    So how’d it do on the dyno?
     
  5. 1969RIVI

    1969RIVI Well-Known Member

    It hasn't gone yet. Waiting to hear back from them with my appointment. Frustrating as I want to drop ot in and drive my car:(.
     
  6. CanadaCat

    CanadaCat Well-Known Member

    Here’s a good video series about engine dyno prep.

     
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  7. sean Buick 76

    sean Buick 76 Buick Nut

    No one else is going to guess the HP and TQ?
     
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  8. ghrp

    ghrp Well-Known Member

    With the porting done to the head, I'm guessing it should be pretty close to 600 TQ, probably 570-580 (could be wrong on that one) and 530-540 HP
     
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  9. 1969RIVI

    1969RIVI Well-Known Member

    I haven't heard back from one dyno shop yet so I spoke with another today. He's checking to see if his Pontiac plate will bolt up to the Buick crank so his dyno can work. Does anyone know if that is possible? He also mentioned he's a few weeks out until he can do it:(. Common thing these days but I'm anxious to drive my car again.
     
  10. Tomahawk

    Tomahawk Platinum Level Contributor

    Optionally, install the engine and drive your car until a spot opens up at a chassis dyno
     
  11. 1969RIVI

    1969RIVI Well-Known Member

    Trust me I have considered that but I really want to break in and tune the engine on an engine dyno that way if anything goes wrong it's easier to make repairs/adjustments. There's tons of chassis dynos around me but shops with engine dynos are very limited.
     
  12. sean Buick 76

    sean Buick 76 Buick Nut

    I could be wrong however I think the bolt pattern is the same on the flex plate to crank.
     
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  13. 87GN_70GS

    87GN_70GS Well-Known Member

    540 hp 600 ft lb
     
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  14. 1969RIVI

    1969RIVI Well-Known Member

    That's what he and I were thinking too, that the Pontiac plate should bolt up to the Buick crank flange.
     
  15. 1969RIVI

    1969RIVI Well-Known Member

    UPDATE: Dyno session is booked for next Thursday 7am, WOOOO HOOO!!!:):)
     
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  16. Bens99gtp

    Bens99gtp Well-Known Member

    I think you would want to use your flex plate, you had the assembly balanced with it..........putting a flex plate from another manufacturer even if it bolted up could mess that up.

    Now if his plate bolts on to where the torque converter does you should be fine......that would mean his dyno drive plate is neutral and you still use your flywheel/flex plate
     
  17. 1969RIVI

    1969RIVI Well-Known Member

    Hey Ben, yes I wanted to but he said his dyno won't mount to it. I borrowed a stock 70 Buick manual trans flywheel to bolt up to the engine and his dyno will work on that.
     
  18. sean Buick 76

    sean Buick 76 Buick Nut

    Exciting!!! I’m a few hours of work away from dyno testing as well so it’s very cool. Of course it may be a while till we actually go to the dyno as he keeps finding more power in the heads with porting.
     
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  19. 1969RIVI

    1969RIVI Well-Known Member

    Sweet!! Does Chris have the engine or just your heads?
     
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  20. sean Buick 76

    sean Buick 76 Buick Nut

    He has 3 of my engines complete. One is a stock 70 315 HP, next is a 10:1 girdled, billet crank 355 for turbos with alum heads, and a 13:1 355 race NA setup
     
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