Identification, VIN, Trim, Engine Specs and more... 
 '50   '51   '52   '53   '54   '55   '56   '57   '58   '59   o 
 p 
 e 
 n 
 '60   '61   '62   '63   '64   '65   '66   '67   '68   '69 
 '70   '71   '72   '73   '74   '75   '76   '77   '78   '79 
Canadian car identification here: Serial Numbers 1935-1964 | 1965-1966
and more information in the reference section here.
Results 1 to 4 of 4

Thread: Decode build sheet

  1. #1
    Join Date
    Jan 2018
    Location
    Bend Orego
    Posts
    1
    My Feedback

    (0% Positive Feedback)
    Rep Power
    0

    Decode build sheet

    Can anyone tell me what the 'RM' code in the engine box of my build sheet decodes to? This is on a 1966 Buick GS.

  2. #2
    Join Date
    Jun 2018
    Location
    Cedar lake
    Posts
    12
    My Feedback

    (0% Positive Feedback)
    Rep Power
    0

    66 build sheet

    That code should be 401 c.i nailhead.

  3. #3
    Join Date
    Apr 2004
    Posts
    4,632
    My Feedback

    (0% Positive Feedback)
    Rep Power
    0
    yes, it's a 401ci Nailhead, even though GM marketing decreed that midsize cars could not advertise displacement larger than 400 cubic inches so the Nail in the Gran Sport is referred too as a "400" in all of the official literature, even though it's not.

    the actual 400ci Buick Big Block debuts in 1967. and the only reason that engine exists is because the "no displacements over 400ci in a mid size car" rule was still in place through 1969 ( even though there were a couple of exceptions permitted like Olds and the Corvette ). when GM dropped the 400 cube rule in 1970, Buick dropped a 455 into all their big block options.
    The way to crush the bourgeoisie is to grind them between the millstones of taxation and inflation.
    Vladimir Lenin

    Government schooling is about "the perfect organization of the hive."
    H.H. Goddard, Human Efficiency (1920)

  4. #4
    Join Date
    Jun 2018
    Location
    Cedar lake
    Posts
    12
    My Feedback

    (0% Positive Feedback)
    Rep Power
    0

    Build sheet

    Where did you find your build sheet?

Similar Threads

  1. 455 Build sheet
    By Bob in forum Big Block: 400, 430, 455
    Replies: 0
    Last Post: 02-27-2010, 11:03 AM
  2. Engine Build Sheet
    By Bob in forum Buick News
    Replies: 0
    Last Post: 12-13-2009, 12:35 PM
  3. build sheet decode?
    By chuckw2 in forum Buick Identification and Decoding
    Replies: 2
    Last Post: 05-03-2009, 08:21 PM
  4. where is my build sheet?
    By 69customdrop in forum Buick Identification and Decoding
    Replies: 2
    Last Post: 05-28-2007, 03:12 PM
  5. Build sheet
    By ROOSTER in forum Buick Identification and Decoding
    Replies: 2
    Last Post: 08-18-2006, 08:20 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
TeamBuick.com Privacy Policy