'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. Buickwes

    401 Carb

    Buickwes, Mar 6, 2008
    Replies:
    8
    Views:
    1,252
    nailheadnut
    Mar 8, 2008
  2. john m

    401 camshaft

    john m, May 5, 2019
    Replies:
    14
    Views:
    874
    John Codman
    May 27, 2019
  3. dirk401425

    401 CAM options

    dirk401425, Mar 25, 2013
    Replies:
    11
    Views:
    2,944
    John Codman
    Mar 27, 2013
  4. KustomKreeps

    401 cam Advice

    KustomKreeps, Mar 12, 2017
    Replies:
    3
    Views:
    2,222
    CameoInvicta
    Mar 16, 2017
  5. treeman

    401 cam

    treeman, Jan 29, 2009
    Replies:
    11
    Views:
    1,182
    treeman
    Jan 30, 2009
  6. KustomKreeps

    401 Cam

    KustomKreeps, Jul 19, 2019
    Replies:
    4
    Views:
    715
    300sbb_overkill
    Jul 20, 2019
  7. 401Riviera

    401 build, Small Block Chevvy Valve springs with modding stock retainers.

    401Riviera, May 2, 2013
    Replies:
    13
    Views:
    879
    87GN@Tahoe
    May 5, 2013
  8. gsgtx

    401 build in hemmings muscle machines

    gsgtx, Sep 26, 2013 ... 2
    Replies:
    20
    Views:
    2,318
    doc
    Oct 8, 2013
  9. Bigpig455

    401 Build Continued..

    Bigpig455, Mar 17, 2019 ... 4 5 6
    Replies:
    111
    Views:
    8,488
    gs66
    Jan 20, 2020
  10. flh73

    401 Build "Stock"

    flh73, Mar 30, 2015 ... 2 3
    Replies:
    49
    Views:
    5,973
    gsgtx
    Apr 6, 2015
  11. 66larkgs

    401 buick nailhead engine torque spec

    66larkgs, Dec 11, 2011
    Replies:
    2
    Views:
    1,773
    wkillgs
    Dec 11, 2011
  12. marshmere

    401 broken rocker

    marshmere, May 30, 2009
    Replies:
    6
    Views:
    880
    John Codman
    Jun 9, 2009
  13. jmos4

    401 bored to a 425

    jmos4, Nov 4, 2011
    Replies:
    4
    Views:
    1,049
    doc
    Nov 5, 2011
  14. Jeff Agosti

    401 Bored to 425

    Jeff Agosti, Feb 24, 2004
    Replies:
    5
    Views:
    792
    Jeff Agosti
    Feb 25, 2004
  15. ss4825

    401 bored out to 425

    ss4825, Mar 2, 2006
    Replies:
    9
    Views:
    2,194
    NailheadinCA
    Apr 21, 2006
  16. 65skylark300

    401 boost handling and amount ?'s

    65skylark300, Aug 26, 2014
    Replies:
    4
    Views:
    577
    whatever
    Aug 31, 2014
  17. BRB62

    401 block swap

    BRB62, Jul 18, 2010
    Replies:
    5
    Views:
    777
    BRB62
    Jul 20, 2010
  18. 66larkgs

    401 base timing.

    66larkgs, Nov 1, 2010
    Replies:
    2
    Views:
    696
    wkillgs
    Nov 2, 2010
  19. GSFredsbuddy

    401 Auto going to a 4 speed

    GSFredsbuddy, Feb 14, 2021
    Replies:
    3
    Views:
    416
    John Codman
    Feb 23, 2021
  20. Rusty Davenport

    401 And 66 Gs Id Help Needed

    Rusty Davenport, Jan 23, 2006
    Replies:
    10
    Views:
    791
    SkylarkNut
    Jan 25, 2006
  21. Brad G

    401 and 425 Nailhead bore info

    Brad G, Mar 9, 2003
    Replies:
    4
    Views:
    2,362
    Brad G
    Mar 10, 2003
  22. lapham3@aol.com

    401 and '66 cat-Mn

    lapham3@aol.com, Nov 15, 2009
    Replies:
    1
    Views:
    459
    CameoInvicta
    Nov 16, 2009
  23. william.ali.kay

    401 Aluminium 4 barrel intake

    william.ali.kay, Mar 1, 2011 ... 2 3
    Replies:
    55
    Views:
    12,954
    doc
    Sep 29, 2011
  24. painekiller

    401 ????

    painekiller, Aug 27, 2008
    Replies:
    8
    Views:
    898
    66electrafied
    Sep 4, 2008
  25. 67lark

    401 8v

    67lark, Apr 14, 2003
    Replies:
    8
    Views:
    1,534
    Dan K
    May 20, 2003
  26. supersteve

    401 4bbl intake questions

    supersteve, Sep 16, 2016
    Replies:
    5
    Views:
    912
    doc
    Oct 2, 2016
  27. dirk401425

    401 425 water pump

    dirk401425, Feb 16, 2013 ... 2
    Replies:
    23
    Views:
    5,127
    doc
    Feb 19, 2013
  28. jhonjhon

    401 425 head numbers

    jhonjhon, May 16, 2003
    Replies:
    5
    Views:
    1,423
    jhonjhon
    May 16, 2003
  29. Sal Paradise

    401 425 bellhousing

    Sal Paradise, Apr 25, 2005
    Replies:
    6
    Views:
    799
    Sal Paradise
    Apr 29, 2005
  30. buickbonehead

    401 2X4 Conversion-change distrib too?

    buickbonehead, Mar 28, 2004
    Replies:
    9
    Views:
    1,147
    Brian
    Apr 7, 2004
  31. lapham3@aol.com

    401 2nd groove ring setup?

    lapham3@aol.com, Jan 27, 2010
    Replies:
    2
    Views:
    468
    lapham3@aol.com
    Jan 28, 2010
  32. George Bednar

    401 / dual quads

    George Bednar, May 4, 2004
    Replies:
    2
    Views:
    571
    wildcat1562
    May 4, 2004
  33. bkennedy

    401 - lock-up/timing issue = big problems!

    bkennedy, Jul 7, 2014
    Replies:
    10
    Views:
    703
    66BulldogGS
    Jul 17, 2014
  34. tp57ranchero

    401 ,T-400 trans question

    tp57ranchero, Jul 3, 2005
    Replies:
    2
    Views:
    561
    tp57ranchero
    Jul 3, 2005
  35. RJBT

    401 (1960) water manifold gasket

    RJBT, Sep 10, 2019
    Replies:
    1
    Views:
    466
    telriv
    Sep 10, 2019
  36. buickgnw

    401 & 425 Questions!

    buickgnw, Nov 14, 2003
    Replies:
    4
    Views:
    736
    '66HeavyD
    Dec 3, 2003
  37. cool55

    401 & 425 Heads

    cool55, Jul 5, 2008
    Replies:
    4
    Views:
    630
    Topcat
    Jul 9, 2008
  38. ypc04

    401 or 400

    ypc04, Feb 20, 2004
    Replies:
    4
    Views:
    502
    SpecialWagon65
    Feb 23, 2004
  39. craig

    401 425

    craig, Dec 24, 2002
    Replies:
    15
    Views:
    3,891
    Topcat
    Mar 28, 2003
  40. zoo york

    400 Transmission high pressure?

    zoo york, Jun 1, 2009
    Replies:
    3
    Views:
    542
    ahhh65riv
    Jun 4, 2009
  41. staticracer

    400 or 401?

    staticracer, Dec 5, 2003
    Replies:
    5
    Views:
    670
    DugsSin
    Dec 8, 2003
  42. 401Riviera

    400 hp, 500 tq .030 over 401?

    401Riviera, Oct 15, 2012 ... 2 3
    Replies:
    42
    Views:
    6,691
    GSBuick65
    Oct 30, 2012
  43. southfork

    4-speed behind 401 Nailhead - revisited

    southfork, Jan 28, 2004
    Replies:
    18
    Views:
    1,175
    SkylarkNut
    Feb 17, 2004
  44. GKMoz

    4-spd nailhead bellhousing

    GKMoz, May 13, 2010
    Replies:
    4
    Views:
    1,497
    wkillgs
    May 15, 2010
  45. freddiezee65

    4- speed bell housing/401

    freddiezee65, Jun 22, 2013
    Replies:
    10
    Views:
    1,006
    D-Con
    Jun 23, 2013
  46. JEFF STRUBE

    4 speed Questions for 1965 GS

    JEFF STRUBE, Feb 10, 2007
    Replies:
    6
    Views:
    1,227
    JEFF STRUBE
    Feb 11, 2007
  47. Staged70Lark

    4 speed flywheel

    Staged70Lark, Nov 19, 2007
    Replies:
    3
    Views:
    794
    pphil
    Nov 19, 2007
  48. buickcoach

    4 speed conversion possible ?

    buickcoach, Nov 8, 2005
    Replies:
    4
    Views:
    782
    CTX-SLPR
    Nov 16, 2005
  49. roostriz

    4 brl manifold differences

    roostriz, Feb 22, 2010
    Replies:
    18
    Views:
    1,164
    roostriz
    Feb 27, 2010
  50. jmos4

    4 bolt mains?

    jmos4, Mar 6, 2012
    Replies:
    7
    Views:
    1,360
    bhambulldog
    Mar 8, 2012
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