'Da Nailhead

Pop Kennedy and TV-Tommy could make 'em run. You can too! Get the lowdown on the most underrated Buick motor here...who needs wedge heads?

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  1. doc
    Sticky

    Doc's dual plane mod and port matching stky

    doc, Mar 24, 2011 ... 7 8 9
    Replies:
    177
    Views:
    67,368
    jw1955buick
    Sep 17, 2021
  2. Adam Whitman
    Sticky

    Nailhead Info/Parts Sources

    Adam Whitman, Apr 14, 2002 ... 2 3
    Replies:
    43
    Views:
    58,434
    flynbuick
    Feb 25, 2012
  3. buickbonehead

    New Super Wildcat WOT T-Shirts & Dual Quad Riviera Too!

    buickbonehead, Nov 17, 2007 ... 14 15 16
    Replies:
    317
    Views:
    43,014
    buickbonehead
    Jun 19, 2011
  4. Deadsled59

    59 Nailhead Rebuild SAGA

    Deadsled59, Jan 4, 2016 ... 12 13 14
    Replies:
    271
    Views:
    31,381
    Deadsled59
    Aug 23, 2023
  5. DualQuad55

    Tom's 'roller rockers'

    DualQuad55, Dec 18, 2006 ... 11 12 13
    Replies:
    254
    Views:
    89,800
    telriv
    Mar 19, 2019
  6. ahhh65riv

    2x4 intake flow & performance data

    ahhh65riv, Nov 15, 2006 ... 11 12 13
    Replies:
    254
    Views:
    59,061
    DeuceCoupe
    Mar 20, 2012
  7. wkillgs

    Interesting head modification

    wkillgs, Sep 6, 2008 ... 7 8 9
    Replies:
    178
    Views:
    23,256
    66gsconv
    Jun 2, 2011
  8. RJBT

    Cleaning 401 rockers/lifters - Dirty ?

    RJBT, Jan 30, 2011 ... 5 6 7
    Replies:
    133
    Views:
    15,277
    bhambulldog
    Jun 6, 2011
  9. funkyriv

    High Performance Nailheads

    funkyriv, Jan 28, 2008 ... 5 6 7
    Replies:
    129
    Views:
    17,051
    nekkidhillbilly
    Mar 30, 2008
  10. SpecialWagon65

    Tom Telesco, working on GOOD pistons for the Nailhead!

    SpecialWagon65, Nov 17, 2013 ... 5 6 7
    Replies:
    128
    Views:
    32,310
    telriv
    Oct 8, 2015
  11. wkillgs

    '66 GS Dealer Race car

    wkillgs, Nov 12, 2006 ... 5 6 7
    Replies:
    127
    Views:
    25,063
    wkillgs
    May 2, 2022
  12. LAROKE

    322 Nailhead build with Latham supercharger induction

    LAROKE, Jul 8, 2021 ... 5 6 7
    Replies:
    124
    Views:
    6,471
    LAROKE
    Apr 23, 2024 at 4:04 AM
  13. The Big Guy

    Let's see those nailhead engine bays

    The Big Guy, Feb 1, 2019 ... 5 6 7
    Replies:
    121
    Views:
    12,207
    Kevallino
    Mar 13, 2023
  14. John Codman

    425 Camshaft questions.

    John Codman, Aug 5, 2010 ... 4 5 6
    Replies:
    112
    Views:
    25,982
    gsgtx
    Mar 20, 2012
  15. Bigpig455

    401 Build Continued..

    Bigpig455, Mar 17, 2019 ... 4 5 6
    Replies:
    111
    Views:
    8,497
    gs66
    Jan 20, 2020
  16. Chad Nicoletti

    Loud Top End Noise, '62 LeSabre 401.

    Chad Nicoletti, Sep 14, 2021 ... 4 5 6
    Replies:
    106
    Views:
    2,947
    Chad Nicoletti
    Nov 8, 2021
  17. 66gsconv

    Kinda slow in da nailhead section lately

    66gsconv, Mar 27, 2012 ... 4 5 6
    Replies:
    106
    Views:
    9,502
    dirk401425
    Feb 20, 2014
  18. jmos4

    TA Performance Single 4V

    jmos4, Sep 7, 2021 ... 4 5 6
    Replies:
    105
    Views:
    6,982
    WildCat Cruiser
    Apr 9, 2024
  19. CameoInvicta

    Comp Cams offering Nailhead Thumpr

    CameoInvicta, Nov 30, 2009 ... 3 4 5
    Replies:
    99
    Views:
    19,675
    TAANK
    Apr 15, 2011
  20. gsgtx

    dyno numbers 425 stroked nailhead

    gsgtx, Jun 2, 2013 ... 3 4 5
    Replies:
    95
    Views:
    15,259
    gsgtx
    Jun 21, 2014
  21. KDML

    New Engine is Knocking

    KDML, Jun 12, 2014 ... 3 4 5
    Replies:
    94
    Views:
    11,097
    DigDugMd
    Sep 1, 2014
  22. Bigpig455

    ST-300 Hop Up!

    Bigpig455, Nov 17, 2012 ... 3 4 5
    Replies:
    94
    Views:
    10,952
    nekkidhillbilly
    Apr 7, 2013
  23. 68riviera430

    BLOWN PISTON! What do i do now?

    68riviera430, May 11, 2010 ... 3 4 5
    Replies:
    91
    Views:
    9,980
    68riviera430
    Jun 23, 2010
  24. Mister T

    What's that clicking noise?

    Mister T, Jun 18, 2012 ... 3 4 5
    Replies:
    89
    Views:
    10,421
    66electrafied
    Aug 7, 2012
  25. Houmark

    Which heads and cam?

    Houmark, Mar 8, 2015 ... 3 4 5
    Replies:
    88
    Views:
    7,356
    Houmark
    Mar 23, 2015
  26. RockinRiviDad

    Soaking Wet Noob here in So. Cal with tons of 401 nailhead Q's

    RockinRiviDad, Nov 26, 2012 ... 3 4 5
    Replies:
    86
    Views:
    7,269
    claude brooks
    Dec 12, 2018
  27. 66gsconv

    The great nailhead intake comparison

    66gsconv, Mar 12, 2013 ... 3 4 5
    Replies:
    84
    Views:
    13,191
    Bigpig455
    Apr 3, 2017
  28. Bigpig455

    Race Day - 65 Gran Sport

    Bigpig455, Sep 29, 2013 ... 3 4 5
    Replies:
    83
    Views:
    7,450
    Bigpig455
    Oct 30, 2013
  29. donut364

    Edelbrock remaking nailhead parts go and vote!!!

    donut364, Jan 28, 2009 ... 3 4 5
    Replies:
    82
    Views:
    12,428
    sideburn satan
    Dec 10, 2009
  30. 66gsconv

    Whats it take to get 12.5 or better with a nailhead

    66gsconv, Jan 24, 2013 ... 3 4 5
    Replies:
    81
    Views:
    4,986
    gsgtx
    Sep 24, 2013
  31. Brian

    The '65 GS is painted now

    Brian, Aug 1, 2005 ... 3 4 5
    Replies:
    81
    Views:
    5,105
    paul c
    Apr 3, 2006
  32. gsgtx

    ethanol gas

    gsgtx, Dec 4, 2017 ... 2 3 4
    Replies:
    79
    Views:
    8,187
    jshanks
    Apr 13, 2018
  33. gsgtx

    TA-25 camshaft

    gsgtx, Dec 16, 2023 ... 2 3 4
    Replies:
    78
    Views:
    2,360
    wkillgs
    Feb 29, 2024
  34. cnh123

    help damsel in distress!!

    cnh123, Jun 19, 2010 ... 2 3 4
    Replies:
    77
    Views:
    9,867
    doc
    Jul 3, 2010
  35. UntamedKitty

    '66 401 with Russ Martins 425 cam...Grrrrrrrr!

    UntamedKitty, Oct 30, 2014 ... 2 3 4
    Replies:
    76
    Views:
    13,885
    66BulldogGS
    Feb 2, 2015
  36. crazy8

    364 nailhead running hot....

    crazy8, Jul 6, 2022 ... 2 3 4
    Replies:
    75
    Views:
    2,398
    Stevem
    Sep 13, 2022
  37. gsgtx

    do nailheads need special cams.

    gsgtx, Jul 10, 2017 ... 2 3 4
    Replies:
    74
    Views:
    7,330
    8ad-f85
    Aug 28, 2017
  38. gsgtx

    26 thousand piston clearance

    gsgtx, Sep 29, 2017 ... 2 3 4
    Replies:
    73
    Views:
    5,717
    dlmwtvl
    Oct 31, 2017
  39. Bigpig455

    65 Gran Sport -Q-Jet, Manifold and Tom's rockers comparison race results

    Bigpig455, Sep 28, 2014 ... 2 3 4
    Replies:
    73
    Views:
    9,226
    Bigpig455
    Oct 22, 2014
  40. UntamedKitty

    SS French Locks (exhaust keepers) for Nailheads, any interest?

    UntamedKitty, Jan 25, 2015 ... 2 3 4
    Replies:
    72
    Views:
    9,364
    picturedlife
    Oct 14, 2015
  41. 4toe
    Locked

    EELCO update

    4toe, Nov 28, 2010 ... 2 3 4
    Replies:
    72
    Views:
    8,161
    87GN@Tahoe
    Feb 8, 2011
  42. Bigpig455

    "Stone Soup" 401

    Bigpig455, Feb 9, 2019 ... 2 3 4
    Replies:
    70
    Views:
    3,842
    Bigpig455
    Mar 10, 2019
  43. RJBT

    401 Nailhead not running smooth

    RJBT, Dec 19, 2010 ... 2 3 4
    Replies:
    69
    Views:
    12,627
    RJBT
    Jan 10, 2012
  44. wkillgs

    In-car vid of 13.41 run in 66 GS

    wkillgs, Mar 17, 2013 ... 2 3 4
    Replies:
    68
    Views:
    6,925
    wkillgs
    Apr 4, 2015
  45. cobravii

    piston opinions wanted

    cobravii, Dec 28, 2016 ... 2 3 4
    Replies:
    67
    Views:
    9,183
    John Codman
    Aug 8, 2017
  46. 401Riviera

    Whats a better carb for a 401 bored .030 with 9.8:1 Compression?

    401Riviera, Oct 30, 2012 ... 2 3 4
    Replies:
    66
    Views:
    5,958
    snake
    Mar 1, 2013
  47. Wicked50

    Trans Decision

    Wicked50, Mar 6, 2010 ... 2 3 4
    Replies:
    66
    Views:
    5,435
    doc
    Apr 18, 2010
  48. 1966buickgs

    I have a harmonic balancer wobbling...

    1966buickgs, Apr 19, 2014 ... 2 3 4
    Replies:
    65
    Views:
    8,010
    Aussie V8
    Jul 11, 2014
  49. JESUPERCAT

    Dragster update

    JESUPERCAT, Aug 13, 2010 ... 2 3 4
    Replies:
    65
    Views:
    12,440
    JESUPERCAT
    May 10, 2011
  50. TAANK

    toms roller rockers vs cam and valves from ta

    TAANK, Sep 17, 2007 ... 2 3 4
    Replies:
    65
    Views:
    15,916
    kitabel
    Feb 4, 2010
  51. yacster

    Got It!!!!

    yacster, Aug 27, 2007 ... 2 3 4
    Replies:
    64
    Views:
    6,329
    yacster
    Apr 15, 2008
  52. 1966buickgs

    New rebuilt 401 overheating...

    1966buickgs, Apr 8, 2016 ... 2 3 4
    Replies:
    63
    Views:
    7,007
    gsgnnut
    May 1, 2016
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