performer experiment???

Discussion in 'Race 400/430/455' started by Steve Yahnke, Aug 25, 2011.

  1. Steve Yahnke

    Steve Yahnke Well-Known Member

    Sorry Mike e not sure what your question is???
     
  2. Michael Evans

    Michael Evans a new project

    When you say "short time", you mean 60 foot time?

    Is that 2.20 seconds?
     
  3. Steve Yahnke

    Steve Yahnke Well-Known Member

    Yes short time is 60ft time ...and when i say 19-20 i mean 2.0-1.9, sorry we talk weried her in Colorado.
     
  4. K0K0

    K0K0 Jamie

    When I've run a MT radial slick or dot they hook best for me 19-21 psi.
    Jamie
     
  5. R4E5G5L

    R4E5G5L Not a Cutlass

    Started @24, worked down from there, didn't make much diff. I'll go back up and try again without the sway bar.

    Thanks,
     
  6. gmcgruther

    gmcgruther Well-Known Member

    Just ask your fellow racers at the track about this stuff, [​IMG], If you can't hook on this, then start all over on your rear suspension.
     
  7. No Lift

    No Lift Platinum Level Contributor

    I normally run 18-20 lbs in my M/T's. It seems to me a narrow tire on a wide wheel would need higher pressures and a wide tire on a narrow wheel would need less. There's always slight variation for optimum.

    Traction on the street is nowhere near what traction at the track is like even with a great tire. You really can't make comparisons other than to say this tires spinning less than that tire. If you get no spin on the street then you'd probably hook up under the worst track conditions.

    My buddy got a good deal on a pair of new 275 60 15 Nitto Drag radials for his '72. He was trying to save some money by not getting the more expensive M/T's. It has run 11.9's with 60's in the 1.65 range on some purchased cheap used worn M/T 255 60 15's. In fact the last time he was at the track in May his first run was in the 11.90's and then the next it was 12.0's and then slower than that . We looked at the tires and the cord was starting to show. I hope he isn't in for a big disappointment when we hit the track in a few weeks.

    I haven't run a front rollbar on my '65 GS pretty much forever. I do run a rear one to help level the launch. My '76 Century Special didn't even come with one from the factory. The Special was the cheap model. A car doesn't need a rollbar to handle decently. Obviously a rollbar improves handling but it isn't necessary for a car to drive correctly. Taking one off doesn't throw a car out of wack. A car without one just won't do what the same car would do with one in the turns. I have my '76 set up to handle good and I have all kind of extras on it to help handling including a 1&3/8" hollow front bar.
     
  8. gmcgruther

    gmcgruther Well-Known Member

    Try telling this guy that,http://www.youtube.com/watch?v=bu7zAfEnuEM, he use's Pimpjuice on the street. Never say what you said, because the street is totally different then the track, Once you hook on the street ,you hardly ever hook at any track. Yes he tried the DragWeek and never made it because he couldn't hook and other problems. Oh by the way he is a low 7 second car on the street in the quarter. Think about that for a second.
     
  9. R4E5G5L

    R4E5G5L Not a Cutlass

    Hey Steve Y,

    Gonna try again this weekend?
     
  10. Steve Yahnke

    Steve Yahnke Well-Known Member

    Went out on Sunday first run was a 13.16,ran between 13.19-13.15 all day . Then on last run dialed in a 13.15,pulled a .034 light left my buddy todd in the dust, since the car had not turned better than 13.15 wasnt concerned with braking out. Wrong 13.07 103.00 again went home...car loved the density of 4923 and a good tail wind,unfortunatle this was the last race of the season, will pick it up in april...Good luck to you steve,still not sure of my cheapo port job.
     
  11. R4E5G5L

    R4E5G5L Not a Cutlass

    Oh man! So close to 12.99

    Thanks for all the info and updates.

    Later,
     
  12. 71stagegs

    71stagegs bpg member #1417

    I Took (No lift) Mikes advice and made a 4 hole 1" spacer for my TQ he is RIGHT about low end.Just what a BBB needs more low end.Say good by to my TA'S:3gears: Thanks Mike
     

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