Who's running .060 over

Discussion in 'Race 400/430/455' started by hugger, Sep 2, 2019.

  1. hugger

    hugger Well-Known Member

    Any you fellas running a hard blocked deal at .060 over? How many blocks did you go thru to find one suitable?
     
  2. Tom Righter

    Tom Righter Well-Known Member

    75 block 4.375 bore full filled 9.30@145 no issues
     
  3. hugger

    hugger Well-Known Member

    Was there a decent amount of wall left or do you remember?
     
  4. Bens99gtp

    Bens99gtp Well-Known Member

    I would think with a proper fill you could thin the walls out more. Can't see 4.375 being an issue with filler. That's only .0125 each side more than most standard performance buick slugs
     
  5. hugger

    hugger Well-Known Member

    I agree its always seem like taboo to drill out to 60 on a burick,..we gonna do it tho
     
    sriley531 likes this.
  6. Bens99gtp

    Bens99gtp Well-Known Member

  7. Bens99gtp

    Bens99gtp Well-Known Member

    Well at the steal of deal you got on new pistons I would too
     
  8. 300sbb_overkill

    300sbb_overkill WWG1WGA. MAGA

    Do an upside down fill with epoxy, seal deck, fill with sand so there is about a 1 1/2"(or however much you'd like up there) path for water at top. Also route lubed hoses where you want water to flow to be pulled out afterwards.

    You can either fill bottom with grout or epoxy after the top dries or just fill to the water pump outlet while upside down and call her done, or you can do a side fill for the bottom on the thrust sides, dealers choice.

    Make sure to route a small hose from the top to the bottom drain hole for easy draining. I'm sure you can figure out the rest of the details. GL
     
  9. telriv

    telriv Founders Club Member

    What I do when using some kind of filler, usually, Epoxy. I take a piece of Styrofoam cut at a 60* angle at the bottom then stuff it between the cyl. wall to cover the drain. Fill as desired. When filler is hard use some carb. cleaner & it will de-solve the Styrofoam.
    Use your imagination on size.

    Tom T.
     
  10. hugger

    hugger Well-Known Member

    Should be a stout little engine plan as of now is
    488in
    Girdled and filled
    Stock oiling
    Well ported stage 3s
    Tunnel ram
    Big ole nasty stick
    As much compression I can get to work on 93
    2.125 headers
    3.5in full exhaust
    4500 stall
    4.10 gear
    3600lbs
    ,....I think it might would run some high 10's,...
     
  11. Bens99gtp

    Bens99gtp Well-Known Member

    I dont see why not, our 464 is just over 12:1 on te2 heads, I think I'm just outside of pump gas, but we are running 100 octane low lead avgas.
    No girdle no fill, 3800ish pound car and driver race weight, going upper 10.50s with a 60ft that's not right yet, so I dont see how you dont get upper 10s
     
  12. hugger

    hugger Well-Known Member

    If it doesn't go 9.70s it comes back apart ha
     
    Footbag and 1972Mach1 like this.
  13. Bens99gtp

    Bens99gtp Well-Known Member

    That's a long way from upper 10 .
     
  14. hugger

    hugger Well-Known Member

    Yes it is and is basically where I was 4 yrs ago ha,. Should have left it alone
     
  15. hugger

    hugger Well-Known Member

    I'm hoping for some really low 1.30's,.the last 625hp setup was good for 1.44s,..so hopefully another 125hp can cut a tenth off the short time
     
  16. Bens99gtp

    Bens99gtp Well-Known Member

    Yeah as we spoke earlier I need to trim the fat off my short times too
     
  17. nickbuickgs

    nickbuickgs nickbuickgs

    Buy Tom R race short block , all the work is done . Just use a thicker cometic gasket . That engine went 1.27 3400 car 4.375 bore. Soild flat tappet cam too
     
    1972 Stage 1 likes this.
  18. Donuts & Peelouts

    Donuts & Peelouts Life's 2 Short. Live like it.

    Did olds and Pontiac also have issues with maxing out the 455's
     
  19. hugger

    hugger Well-Known Member

    Wish I could,..I have to slowly chip at way at stuff,..
     

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