Did my best time at Quaker so far

Discussion in 'Small Block Tech' started by Mark Demko, Jun 14, 2019.

  1. hugger

    hugger Well-Known Member

    I've always flashed my cars also,..the only one that didn't like it was the last 9.5 I had I the orange car,..it did not like it,..I had to get up on it a good bit,. Which takes away from your suspension movement,...not good

    Also as mentioned short shift 1-2 and run the 2-3 out further that's worked well on a few of my cars
    Mark Demko likes this.
  2. Bens99gtp

    Bens99gtp Well-Known Member

    Bracket racing is about consistent, as much as we all want the fastest slip possable, I won far more money running low 12s, than any other times.

    Find your routing b4 the race, during the race, and do it all the same. Water temp, oil temp, fuel level, staging routine, shifting, same same same
    Mark Demko likes this.
  3. Fox's Den

    Fox's Den 22 years of racing the same 355 Buick motor

    X2 yep ^^
  4. Mark Demko

    Mark Demko Well-Known Member

    I was kinda theorizing the same thing, stalling lower gives the engine more "room" to rev to the flash stall of the convertor, kinda like having more room to swing a punch.
    I wasn't sure about my theory tho:p
  5. Mark Demko

    Mark Demko Well-Known Member

    Great suggestions!
    I appreciate all the input and knowledge from seasoned racers;)
    I'd "assume" my tach is correct, the factory tach was replaced this winter with an Autometer tach.
    I'll try short shifting next time out.
    That "theoretical" 20 mph gain from the 1/8 to 1/4 mile is what I was trying to remember yesterday, thanks for reminding me of that!
    I do remember 3 years ago my mph gain was only 8 or 9 mph between 1/8 and 1/4.
    So this new combo is working better, just need to figure it out:D
    What about this talk about stroking the 350, is it worth it being its a small bore and long stroke already?
    Would stroking it just make it more of a torquer down low?
    70skylark350 likes this.
  6. Mark Demko

    Mark Demko Well-Known Member

    X2 on the A/F meter, unfortunately I didn't pay any attention to it all day:rolleyes:
  7. 300sbb_overkill

    300sbb_overkill WWG1WGA. MAGA

    With more cubes from stroking there would be more torque throughout the entire RPM range but without any head porting done would bring the power range lower.

    With better flowing heads to fill the cylinders with the extra cubes there would also be more HP and torque throughout the RPM range and if the heads could supply the air flow it would make more higher RPM HP.

    If the new heads could supply the flow needed to make more power in the higher RPM range, even the factory stroke would make more HP in the higher RPM range.

    Its all about air in and out that makes power, the pump doesn't care about the bore size or the stroke.

    A Ford 5.4L engine has a 3.552" bore with a 4.165" stroke, a WAY worse bore to stroke ratio than a Buick 350 that seems to run just fine with good head flow because the cams are mounted on top of the heads.

    Even a 5.3L LS engine has a 3.779" bore with a 3.622" stroke, a little better but its still a pushrod engine but has good flowing heads that makes it runs so good.(factory max head flow is around 227 CFM from the factory for the 5.3L heads!)

    The key to a stroker(or even a factory stroke sbb 350) having HP in the higher RPM range is head flow, its all about the flow not the bore or stroke or bore to stroke ratio. Maybe the new aluminum TA sbb 350 heads will be the ticket?
    Last edited: Jun 16, 2019
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  8. 300sbb_overkill

    300sbb_overkill WWG1WGA. MAGA

    Sounds like you need an A/F meter that can data log for you so you can look at it after the race.:cool:
  9. clutchracer

    clutchracer Well-Known Member

    Congratulations Mark, sorry I didn't get a chance to meet ya. Been following your 350 build and was hoping to talk with you. Maybe see you out at Norwalk?

    Attached Files:

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  10. telriv

    telriv Well-Known Member

    Another thing you can do for some data is to rig up a camera that can run & you will now have some kind of recording (sorta like data) that you can look back at, stop in certain places, etc.
    Problem is, is that the recording device needs to see the tach, oil pressure & A/F ratio all at the same time. Find a place for this device & put Fel-Cro on the camera & seat to hold it in place. NOW the only thing you need to do is remember to TURN IT ON!!!!

    Tom T.
    Mark Demko and 300sbb_overkill like this.
  11. Mart

    Mart '71 350 GS, almost stock

    Only so much air can get in and out, unless you force feed it....
    Partying this week in Nashville, hopefully mine will get assembled soon.:)
    Mark Demko likes this.
  12. Mark Demko

    Mark Demko Well-Known Member

    I've been thinking of that for awhile, the 5.3 LS runs like the wind, but it has an even smaller bore than the 350 Buick.
    Why does it run so well Im thinking,
    It has nothing to do with pistons, rods, crank, block, cam, oiling system, fuel system, ignition system, EVERY engine has those.
    Its the heads!
    I remember reading awhile back when the LS engines debut, the focus was all on the heads, cathedral ports, etc.
    Even when the Vortec heads came out for the Chevy V6 and V8 the power jumped quite a bit.
    So as always is said, "The power is in the heads"
    Everything else is just supporting hardware.
    I have the hardware now, just need the heads:D
    300sbb_overkill likes this.
  13. Mark Demko

    Mark Demko Well-Known Member

    I was thinking the same, as I don't know anything about real data loggers, only thing I do know is its more money, and wiring:rolleyes:
  14. Mark Demko

    Mark Demko Well-Known Member

    Heres a vid of run 3
    scubasteve455 and 70skylark350 like this.
  15. Bens99gtp

    Bens99gtp Well-Known Member

    Quess I dont remember the last 300-400 ft of that track starting to go uphill?????
    Mark Demko likes this.
  16. Mark Demko

    Mark Demko Well-Known Member

    LOL, seem everything is up hill there!
    I believe No Lift said Quaker is the slowest track east of the Mississippi.
  17. Mark Demko

    Mark Demko Well-Known Member

    IMG_4220.JPG Me waiting to go forward into the burnout box. When I let go of the line lock I felt I was spinning going downhill lol!
  18. Mark Demko

    Mark Demko Well-Known Member

    BUICKRAT likes this.
  19. crouchmtrsports

    crouchmtrsports crouchmtrsports

    Mark, you need to bring it to Cecil in Sept. I run numerous tracks in 6 different states & Cecil is were I've run my quickest times.
    Mark Demko likes this.
  20. Mike B in SC

    Mike B in SC Well-Known Member

    Quaker The Breaker!
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