Post your 11/12 second 455 combos!

Discussion in 'Street/strip 400/430/455' started by oldschool85, Nov 9, 2013.

  1. got_tork

    got_tork Well-Known Member

    65 Skylark
    70 455
    Bored .30 over
    Oil mods&main studs
    Stock crank .10/.10 polished & oil holes chamfered
    Stock rods ARP bolts, polished beams
    Speed Pro dished Pistons,Plasma Moly file fit rings.
    70 Stage 1 heads with bowl work
    1.55 stock rockers
    Brut Strength Double Roller Chain
    TA 310cam,232@.50 499lift,110c/l can't totally decifer my notes from 20yrs ago I believe it's advanced +4 so 106 C/L
    SP1,w/1" spacer BG 850
    TH400 W/3500 Stall,12bolt w/3:73
    Best time 1.63 60' 11.94@109.
    Only raced about 20 times but it seems like that should be a solid 11.80's-70 combo.
     
  2. Skylard

    Skylard Well-Known Member

    Hey Mr Got Torque!
    Looks good, what does it weigh>
    Cheers!
     
  3. got_tork

    got_tork Well-Known Member

    3610 but it wasn't weight at the track so I'm not sure how accurate the scale was.
     
  4. oldschool85

    oldschool85 Well-Known Member

  5. techg8

    techg8 The BS GS

    1972 Skylark (GS Stage1 clone) "The BS GS"
    76 455 milled decked, stg1 valves
    flat top hyper pistons
    SP1 intake
    QUADRAJET 7042240
    Comp cam 489 lift 228 236 dur 112 LSA
    HEI
    Headers, 2.5" Magnaflow X pipe system
    built TH350 with TCI converter stalling 2800ish
    3.73 posi rear
    MT drag radials 255-60/15

    best as of Friday Oct 13 2017
    12.686@105.78
    1.83 60ft

    b4colorsand.jpg 20171013_194302.jpg
     
    Last edited: Oct 18, 2017
  6. oldschool85

    oldschool85 Well-Known Member

    What are the specs of the Comp cam / Lift and lobe ?
     
  7. techg8

    techg8 The BS GS

    added to the original post thanks
     
  8. Bigpig455

    Bigpig455 Fastest of the slow....

    And just in case no one believes him, here's the link to the worlds worst video of the run on youtube.



    It also happened to be my best run in the red GS, and I will update my entry on page 11
     
  9. moleary

    moleary GOD Bless America

    Just a low compression 462, 4 speed, small RV cam street car. Has put down almost two dozzen 115mph +/- quarter mile passes driving 40 minutes each way to and back from the track.

    Lowest et is 12.15 @ 115 1.879/60'. It has mid 11's in it with a better 60'. So,

    Off season swapping the M22 out to a Midwest Muncie M23. The close ratio 2.20 1st gear isn't the right combo with 3.7 rear gear. Too low of a launch gear ratio and not shifting out of 1st gear over 100' down the track. The Midwest Muncie M23 features a modified Auto-gear super case, 2.99/1.88/1.35/1.0 gear set and should get the 60's down to 1.50's needed for the mid 11's.

    I haven't touched off the Nitrous yet...

    Details--> http://www.v8buick.com/index.php?threads/molearys-1970-buick-skylark-street-sleeper.315998/
     
    Last edited: Nov 21, 2017
  10. David Hemker

    David Hemker Well-Known Member

    Stock bore 1972 455
    TRW replacement 1970 pistons installed in 1981 with stock size ring pack, new rings in 2013
    1970 service Stage 1 heads with a good valve job NO porting
    Compression at 11.5:1 using 50-50 mix of 110 & 90 octane Rec gas
    Stock iron 1970 intake NO porting
    Iron exhaust manifolds with exit opened to 2.25
    2.5 mandrel exhaust to the bumper with Walker Lazy S oval case mufflers
    1967 rockers with adjustable push rods
    Stock oil pump
    Stock fuel pump with 3/8 line from the tank
    Stock replacement timing set
    Scott Brown cam .456 - .465 lift, 210-230 @ .050, 260-285 adv duration, ground with 108 & 112 lobe centerlines then retarded 5 degrees by elongating the cam gear holes
    1971 750 CFM Q-jet 7041244 (350) carb
    Stock air cleaner w/flipped lid
    Stock distributor with 1181 Pertonix and 34 degrees total timing in by 2500
    Stock balancer & flexplate
    T-400 with stock 13" convertor tightened up a bit.
    3.73 gears
    G-60-15 Goodyear Polyglas tires
    3760 lbs with driver
    Best ET 12.52 @ 108.9 mph with 1.86 60' time

    Change trans to a T-400 Switch Pitch with 2500 KB convertor using 9x26 slicks
    Best ET 12.13 @ 109.8 mph with 1.72 60' time locking the convertor as quickly as possible after launch
     
    Bigpig455 and SpecialWagon65 like this.
  11. 70 GMuscle

    70 GMuscle Plan B

    New low on my combo. 1.68 60ft and 12.30 at 109.
    Only change is holley annular discharger 9380.
    Just installed msd and o2 sensor but not driven yet.
     
  12. Skippy597

    Skippy597 Silver Level contributor

    Wow, that is a mild build that sure does run well. What car is this in and what's the weight?
     
  13. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    Static compression is 11.5:1, and it runs on Race Gas. Car weighs 3760 lbs with the driver. All of that from his post.
     
  14. Skippy597

    Skippy597 Silver Level contributor

    Thanks, I missed that he posted the weight.
     
  15. David Hemker

    David Hemker Well-Known Member

    I run a 50/50 mix of 91 recreational gas and 110 race gas.
    The car is a 1970 GS, White with Green GSX stripes.
    At Bowling Green I have run in the Buick Stock Appearing (BSA) class from 2007 - 2015.
    Did not make it in 2016 & 2017 due to a schedule conflict with the Pure Stock Muscle Car Drag Race held at the Mid Michigan Motorplex in Stanton MI.
     
    Last edited: Nov 8, 2017
    Skippy597 and 300sbb_overkill like this.
  16. D.S.R.E.455

    D.S.R.E.455 Active Member

    This motor is in my truck now but ran a best of 10.93 at 123.3mph in my customers 76 camaro weighing 3650lb
    Street car, no bar, 28x10.5 et streets
    73' 455 all oil mods
    Stock crank,rods w/arp bolts, speed pro pistons 10.84:1 comp
    TA413 cam installed at a 110ilc
    My ported E-heads and my ported TASP1 intake with a 950hp holley and 1-7/8 Headers, dual 3" exhaust
    TH400, 3200 stall, 3.73 gears
    Got booted for no roll bar lol
    Now ill see if I can get on the list in my 4600lb truck. Might need N20 lol
     
    oldschool85 likes this.
  17. oldschool85

    oldschool85 Well-Known Member

    Post your combinations.
     
  18. Gary Bohannon

    Gary Bohannon Well-Known Member

    Best 1.63 60 ft, 7.52 et, at 92 mph in the 1/8 mile (estimate 11.85 and 113 1/4 mi)
    1967 GS weighs 3750 with driver
    430 bored with stock 455 pistons from a junkyard.
    9.5 compression ratio.
    TA stage 2 heads mild port work
    C118 cam 228 247 stock rocker arms
    stock fan, power steering, power brakes
    Quadrajet on a B4B intake
    3500 stall JW converter
    Th400 tranny
    3.73 rear in a 8.5 10 bolt and truetrac
    TA no hop bars.
    MT 275/60-15 street pro tires
    Viking adjustable shocks 3 clicks compression, 7 clicks rebound, hooks great and consistent.
     
    Last edited: Jul 5, 2021
  19. Bigpig455

    Bigpig455 Fastest of the slow....

    Just to fire this thread back up, updated specs on my new(ish) pure stock 462 build.

    71 GS 455 S1 car
    Bore 4.3425
    Stroke 3.90
    Pistons - Speed Pro 23 cc, .007 deck, 10:1
    Heads - 71 Stage 1, 71cc, bowl clean up
    Cam -Camcraft 218/23o 112 hydraulic flat tappet
    Lift - .480/.517
    Duration - 268/280 218/230
    LSA - 110, ICL 110
    Intake - 70 Buick
    Carb - 7041540 800 QJ
    Exhaust -67 Manifolds (Rogers) and 2.5 X pipe
    Weight - 3950
    ET - 12.47
    MPH - 106
    60ft- 1.77
    Rear 3.73 8.5
    Trans - TH400
    Converter - 2800

    I've found this car runs out of breath at 5300 RPM, gonna have to make a cam change this spring.

    Who else has something new to report? Are we still updating the spreadsheet?
     
    Last edited: May 26, 2023
    FLGS400 and oldschool85 like this.
  20. moleary

    moleary GOD Bless America

    Maybe this year I’ll get out to see if the new, since last post here, M23 and aluminum Supertricks on all fours will get me into mid 11’s N/A.
     
    Super Bald Menace and Bigpig455 like this.

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