Whats your guess? 475CID on the Dyno yesterday evening

Discussion in 'Race 400/430/455' started by Opa, Jun 4, 2009.

  1. Opa

    Opa Torque/a 8 piston figure

    Our new engine made its Dyno runs yesterday Evening.
    Dyno sheets will be posted soon.

    The specs are 475 CID girdled and 3/4 filled with hardblock shortblock, Diamond custom dished pistons,
    H-Beam rods, 10.75:1 compression (pumpgas engine), bigger then 308S custom made cam with counterbore washerbearing, alu STG1TE heads with oversized valves 345CFM flow, TA 1.6 Roller Rockers SP2A intake, custom valleypan, PROFORM 950 CFM race carb, MSD Pro Billet Distributor. External oilpump, TA Meziere electric waterpump (This was not installed on the Dyno, because it was in backorder its on its way now do).

    What is your guess what this engine made on the Dyno?
    HP/RPM Torque/RPM

    Here are some pictures of the engine:
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  2. Bobb Makley

    Bobb Makley Well-Known Member

    638 hp 645 FTLBS
     
  3. bostongsx

    bostongsx Platinum Level Contributor

    610hp 590ft/lbs
     
  4. sailbrd

    sailbrd Well-Known Member

    647 HP
    625 TQ

    just a WAG
     
  5. rex362

    rex362 paint clear and drive

    looks like top shelf stuff there :TU:

    big Hp
    big trq
     
  6. K0K0

    K0K0 Jamie

    660 hp
    630 tq
    Jamie
     
  7. Tim

    Tim Silver Level contributor

    640hp 625 lbs
     
  8. stage2man

    stage2man Well-Known Member

    645hp@6300
    643tq@4350
     
  9. Opa

    Opa Torque/a 8 piston figure

    Anymore people who want to make a guess?

    Come on, this is not a Chevy on the spray or a Mopar motor who really needs a diaper, or a Ford that only runs good under pressure.

    Its a Buick engine that knows how to make Torque on its own, like mother nature does. And anyone knows: if you want something moved you need Torque, and lots of it.
    I have never seen HP move a mountain, but I have seen Torque move an Island.

    Tomorrow I will post the results, and remember those who are the closest with HP/Torque and the RPM that goes with it wins a 1 minute vacation trip to my home country, sorry its all I can afford right now.
    Cause...You need lots of CI and HP to get a chevy guy to part with his money.
    But A Buick guy gets caught up in the Torque flood that cleans his soul and washes away his hard earned cash...but its allright..our mind is in peace after that first drive....in close contact..finally with mother nature! :TU:
     
    Last edited: Jun 6, 2009
  10. Opa

    Opa Torque/a 8 piston figure

    Just a WAG indeed! :Dou: :Brow:
     
  11. rex362

    rex362 paint clear and drive

    654 hp
    701 trq


    :)
     
  12. rmstg2

    rmstg2 Gold Level Contributor

    660 hp 690 tq
     
  13. Poppaluv

    Poppaluv I CALL WINNERS!!!

    Awww, Rex, that was gonna be my guess. I'll go to 738 tq.
     
  14. Jim Weise

    Jim Weise EFI/DIS 482

    Anything around/over 700 ft lbs requires much more stroke (cubic inch) and compression than we had with Robert's motor..

    Sweesy's 529 at 14.5 compression made 765 torque. We are only at 475 ci and 10.75 here..

    Several of you early guys were very close.

    Modify your guesses accordingly.

    JW
     
  15. Opa

    Opa Torque/a 8 piston figure

    Hey JW, I guess we could use the European standard measurement for torque..thats in Newton meters..then it will pass Sweesy's 529CID torque number with ease.

    But hey! What ever it is, its a enough for me! (for now..oh no its allready starting again!.. JW are there allready package deals available for those new TA alu engine shortblocks...? :grin:


    P.S. JW where are the Dynosheets? I have to tell these guys what the numbers are very soon. :)
     
  16. rex362

    rex362 paint clear and drive



    I guess we are optimists :)
     
  17. mygs462

    mygs462 Well-Known Member

    670hp
    690tq
     
  18. sootie007

    sootie007 65 Skylark -455 - T350

    616 hp 652 tq :)
     
    Last edited: Jun 6, 2009
  19. 1967GS340

    1967GS340 Well-Known Member

    I don't know, but I can see that I was a bit high with my numbers.
     
  20. Tom Haeffner

    Tom Haeffner Well-Known Member

    665 hp 6400
    660 tq 4700
     

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