'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. 1966buickgs

    New rebuilt 401 overheating...

    1966buickgs, Apr 8, 2016 ... 2 3 4
    Replies:
    63
    Views:
    7,083
    gsgnnut
    May 1, 2016
  2. coogan

    Finned 401 valve covers?

    coogan, Jul 30, 2007
    Replies:
    15
    Views:
    7,093
    elvislives
    Sep 3, 2010
  3. PEMracingengine

    New CHI-TOWN Nailhead

    PEMracingengine, Jul 26, 2012 ... 2 3
    Replies:
    47
    Views:
    7,119
    PEMracingengine
    Mar 14, 2013
  4. JZRIV

    Pump Up Lifters Before Install? Yes or No

    JZRIV, Feb 28, 2010
    Replies:
    13
    Views:
    7,136
    doc
    Mar 4, 2010
  5. KDML

    My 401 Build Plan

    KDML, Jan 16, 2012 ... 2 3
    Replies:
    56
    Views:
    7,153
    KDML
    Oct 1, 2012
  6. 66larkgs

    turbo buick nailhead video

    66larkgs, May 11, 2013 ... 2 3 4
    Replies:
    60
    Views:
    7,157
    66larkgs
    Sep 22, 2013
  7. jmos4

    X casting intake Manifold Aluminum Factory

    jmos4, Aug 30, 2013 ... 2
    Replies:
    30
    Views:
    7,242
    wkillgs
    Jan 28, 2015
  8. mrbuick65

    Nailhead overheating

    mrbuick65, Feb 9, 2008 ... 2 3
    Replies:
    40
    Views:
    7,283
    doc
    Apr 13, 2008
  9. 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:
    7,360
    claude brooks
    Dec 12, 2018
  10. 67SS427

    Rochester 4 Jet carb Identification

    67SS427, Oct 28, 2010
    Replies:
    5
    Views:
    7,363
    katz
    Jan 11, 2011
  11. gsgtx

    do nailheads need special cams.

    gsgtx, Jul 10, 2017 ... 2 3 4
    Replies:
    74
    Views:
    7,434
    8ad-f85
    Aug 28, 2017
  12. 66BulldogGS

    The Return of Don's 1966 Skylark GS....The Beginning

    66BulldogGS, Apr 8, 2013 ... 2 3
    Replies:
    50
    Views:
    7,462
    telriv
    Feb 13, 2017
  13. 401nailhead65

    Qjet for a nailhead

    401nailhead65, Aug 22, 2011 ... 2 3
    Replies:
    42
    Views:
    7,463
    6WildCat5
    Apr 11, 2012
  14. Houmark

    Which heads and cam?

    Houmark, Mar 8, 2015 ... 3 4 5
    Replies:
    88
    Views:
    7,467
    Houmark
    Mar 23, 2015
  15. jmos4

    TA Performance Single 4V

    jmos4, Sep 7, 2021 ... 4 5 6
    Replies:
    109
    Views:
    7,476
    John Codman
    May 10, 2024
  16. Bigpig455

    Race Day - 65 Gran Sport

    Bigpig455, Sep 29, 2013 ... 3 4 5
    Replies:
    83
    Views:
    7,494
    Bigpig455
    Oct 30, 2013
  17. super 225

    nailhead crate motor?

    super 225, Dec 11, 2004
    Replies:
    16
    Views:
    7,502
    Dennis S
    Jan 7, 2005
  18. BuickGS65

    700r4 2004r tranny adapter ?

    BuickGS65, Nov 26, 2002 ... 2
    Replies:
    27
    Views:
    7,557
    CTX-SLPR
    Apr 14, 2003
  19. Lightweights4me

    1965 nailhead green engine paint

    Lightweights4me, Nov 21, 2012
    Replies:
    9
    Views:
    7,579
    87GN@Tahoe
    Nov 30, 2012
  20. N.J.-SLICK-1

    How you tell the difference bet. a 401 or 425

    N.J.-SLICK-1, Sep 16, 2011
    Replies:
    19
    Views:
    7,595
    nailheadnut
    Oct 11, 2013
  21. 66larkgs

    serpentine belt setup on nailhead?

    66larkgs, Aug 1, 2011 ... 2
    Replies:
    30
    Views:
    7,661
    66larkgs
    Dec 15, 2012
  22. gsgtx

    doctors orders

    gsgtx, Jul 27, 2010 ... 2 3 4
    Replies:
    63
    Views:
    7,712
    kitabel
    Nov 10, 2010
  23. NJBuickRacer

    Can a nailhead run 12s NA and be streetable?

    NJBuickRacer, Oct 21, 2003 ... 2 3 4
    Replies:
    63
    Views:
    7,733
    66larkgs
    Mar 18, 2012
  24. TheBraus

    455 buick, or 454 chevy, power question

    TheBraus, Feb 22, 2010 ... 2
    Replies:
    36
    Views:
    7,777
    cooterbfd
    Mar 3, 2010
  25. hudrod

    Its alive with home made Hilborn EFI conversion

    hudrod, Jun 29, 2011 ... 2
    Replies:
    24
    Views:
    7,868
    doc
    Dec 10, 2011
  26. Brian

    Nailhead head gaskets

    Brian, Mar 12, 2007 ... 2
    Replies:
    37
    Views:
    7,881
    TAANK
    Mar 29, 2008
  27. 401Riviera

    Porting Nailheads, Tips? Do's? Dont's?

    401Riviera, Feb 18, 2013 ... 2 3
    Replies:
    58
    Views:
    7,950
    66gsconv
    Nov 23, 2013
  28. rlafash

    "Original" Quad Set Up

    rlafash, Jan 18, 2010 ... 2
    Replies:
    33
    Views:
    7,980
    Bigpig455
    Sep 18, 2017
  29. Golden Oldie 65

    dual quad nailhead on Craigslist, not mine

    Golden Oldie 65, Dec 14, 2009 ... 2
    Replies:
    29
    Views:
    7,999
    Golden Oldie 65
    Dec 26, 2009
  30. Aussie V8

    322 from 1955

    Aussie V8, Feb 14, 2014 ... 2 3
    Replies:
    55
    Views:
    8,033
    Aussie V8
    May 1, 2014
  31. freddiezee65

    Nailhead/aftermarket fuel injection

    freddiezee65, Jul 27, 2013
    Replies:
    19
    Views:
    8,034
    nekkidhillbilly
    Jan 18, 2014
  32. 1966buickgs

    I have a harmonic balancer wobbling...

    1966buickgs, Apr 19, 2014 ... 2 3 4
    Replies:
    65
    Views:
    8,060
    Aussie V8
    Jul 11, 2014
  33. 4toe
    Locked

    EELCO update

    4toe, Nov 28, 2010 ... 2 3 4
    Replies:
    72
    Views:
    8,204
    87GN@Tahoe
    Feb 8, 2011
  34. Marty World

    ULTRA-RARE "D" items

    Marty World, Oct 29, 2007 ... 2
    Replies:
    34
    Views:
    8,214
    Marty World
    May 9, 2012
  35. 66larkgs

    hurt the 401 nailhead!!! need ---9:1 forged pistons/bearings

    66larkgs, Dec 16, 2011 ... 2 3
    Replies:
    42
    Views:
    8,223
    HULK
    Jan 6, 2014
  36. gsgtx

    ethanol gas

    gsgtx, Dec 4, 2017 ... 2 3 4
    Replies:
    79
    Views:
    8,245
    jshanks
    Apr 13, 2018
  37. JZRIV

    Degreeing a Cam and its Effect on Manifold Vacuum

    JZRIV, Apr 18, 2016 ... 2
    Replies:
    39
    Views:
    8,421
    BuickMike
    Apr 24, 2016
  38. jimtash

    Autozone is discontinuing the Mobil 1 oil filter that fits the Nailhead.......

    jimtash, Jan 25, 2008 ... 2 3
    Replies:
    55
    Views:
    8,458
    jimtash
    Feb 6, 2008
  39. KDML

    Block Inspection

    KDML, Dec 15, 2011 ... 2 3
    Replies:
    53
    Views:
    8,468
    KDML
    Mar 7, 2012
  40. 4toe

    Single 4 aluminum intake sign up / interest thread

    4toe, Feb 27, 2015 ... 2 3
    Replies:
    49
    Views:
    8,474
    Aussie V8
    Sep 4, 2015
  41. CameoInvicta

    Falls flat under load at 5k rpms

    CameoInvicta, Jun 5, 2011 ... 2 3
    Replies:
    55
    Views:
    8,512
    CameoInvicta
    Jun 9, 2012
  42. CarlBraun

    Riviera 425 engine ticking noise

    CarlBraun, Mar 29, 2011 ... 2 3
    Replies:
    49
    Views:
    8,565
    63-CAT
    May 4, 2013
  43. 66larkgs

    Turbocharged your Nailhead tips

    66larkgs, Jul 13, 2015 ... 2
    Replies:
    32
    Views:
    8,588
    MSharkey
    Jun 4, 2023
  44. Bigpig455

    401 Build Continued..

    Bigpig455, Mar 17, 2019 ... 4 5 6
    Replies:
    111
    Views:
    8,624
    gs66
    Jan 20, 2020
  45. nimrod

    TA Nailhead 425 "Shorty" Headers

    nimrod, Aug 11, 2007 ... 2
    Replies:
    25
    Views:
    8,648
    65_Riviera
    Sep 9, 2007
  46. RJBT

    401 Oil pressure - blocked oil passages ?

    RJBT, Jun 16, 2011 ... 2 3
    Replies:
    50
    Views:
    8,692
    RJBT
    Oct 17, 2011
  47. 68riviera430

    My first nailhead question...

    68riviera430, Feb 3, 2010 ... 2 3 4
    Replies:
    60
    Views:
    8,737
    68riviera430
    Sep 20, 2010
  48. TA Perf

    Nailhead Hyd. roller cam, any interest?

    TA Perf, Jul 16, 2008 ... 2 3
    Replies:
    42
    Views:
    8,876
    63 Rivi
    Dec 10, 2008
  49. Weezo182

    Post Your Nail Head

    Weezo182, Apr 3, 2008 ... 2
    Replies:
    39
    Views:
    8,915
    mr62buick
    May 14, 2013
  50. stg2NW

    Nailhead Head Porting

    stg2NW, Dec 14, 2008 ... 2
    Replies:
    33
    Views:
    8,973
    riv1964
    Feb 8, 2009
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