517” Buick Build

Discussion in 'Street/strip 400/430/455' started by BrianTrick, Nov 21, 2020.

  1. BrianTrick

    BrianTrick Brian Trick

    Winter build. This will be a street strip engine that I can drive on 93 octane.
    Billet crank,4.350” stroke,2.100” journals
    7.125” aluminum rods
    Nice and short pistons
    74 block,partial fill,main & lifter girdles
    Scott Brown solid roller
    Rollmaster chain
    AMP oiling system with Steff’s aluminum pan.
    Frankenstein Stage2 heads to move air
    Jessel rocker system

    Should be fun. I’ll keep you posted.
     

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  2. sean Buick 76

    sean Buick 76 Buick Nut Staff Member

    Cool! Pics of the pistons? What static compression?
     
  3. gsfred

    gsfred Founders Club Member

    That's quite a collection of cranks.
     
    dan zepnick likes this.
  4. 436'd Skylark

    436'd Skylark Sweet Fancy Moses!!!!!

    I gotta ask- who is doing the machine work?
     
  5. BrianTrick

    BrianTrick Brian Trick

    Nobody local. I don’t want to wait 4 years.
    Yes,I have really waited 4 years to have something done local before.
    Compression should be around 11:75:1
    I’ve ran 12:1 on 93 with an iron head for 20 years. This will be easier.
    I’m actually reusing the pistons from when it was a 505”. I went from a 4.250” stroke to a 4.350” stroke,and changed the rod.
     

    Attached Files:

  6. Bens99gtp

    Bens99gtp Well-Known Member

    Ok I ask since Noone has yet......what the purpose of the step in the floor runner on the intake
     
  7. Tom Righter

    Tom Righter Well-Known Member

    Sounds a little bit like my Tomahawk build finishing up now. 529 in. 4.375 x 4.400 crower ultra light 3.0 mains 2.100 rods Saenz steel rods 11.52 Comp. Bullet solid .262 .274 on 112 LS stage 2 TE. Holley efi with 4l80e trans. It’s been a long time coming. should be on Dyno soon
     

    Attached Files:

    BUQUICK likes this.
  8. BrianTrick

    BrianTrick Brian Trick

    Step? The intake runners in the heads?
     
  9. BuickV8Mike

    BuickV8Mike SD Buick Fan

    Could be a shadow
     
  10. Bens99gtp

    Bens99gtp Well-Known Member

    Yes
     

    Attached Files:

  11. BrianTrick

    BrianTrick Brian Trick

    No step. The runner floors were filled and the port roofs raised. Pushrod holes moved,widened runners.
    Weld,fill,repeat.
     
  12. Tom Righter

    Tom Righter Well-Known Member

    Lots of work!
     
  13. BrianTrick

    BrianTrick Brian Trick

  14. Tom Righter

    Tom Righter Well-Known Member

    The angled floor is interesting. How did it work out?
     
  15. Bens99gtp

    Bens99gtp Well-Known Member

    Got you, that was going to be my next question about the tube guides.....lol. I see it now........the epoxy fill looks like a step up.......but these must had started as regular port heads not raised
     
  16. dan gaither

    dan gaither Member

    This is really nice build overall, and the heads are especially interesting. Can you share any flow numbers?
     
  17. Thumper (aka greatscat)

    Thumper (aka greatscat) Well-Known Member

    The ports were raised and widened with the floor being epoxy filled.Similar to a TE head. We can do some flow bench work too if he wants to know the actual flow
     
  18. Tom Righter

    Tom Righter Well-Known Member

    how far were they widened. I know my old stage to track eliminator heads Flowed 373 after converting to Jesel and widening the port to 1.540 flow was 383 cfm however it did not drop off at higher lifts. This seems to be about maximum flow without welding into water jackets
     
  19. Thumper (aka greatscat)

    Thumper (aka greatscat) Well-Known Member

    Will have to measure it. Whoever did the work did a good job though.
     
  20. BUQUICK

    BUQUICK I'm your huckleberry.

    Got a photo of the car this will be going into?
     

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