Results 1 to 11 of 11

Engine Size

This is a discussion on Engine Size within the General Help forums, part of the LSx Technical Help Section category; Hello everyone. My name is H. Charles Carr. I'm a new member here and I'm sending you this from Amarillo, ...

  1. #1
    Junior Member
    Join Date
    Jul 2012
    Location
    Amarillo, TX
    Posts
    4

    white
    1968 Pontiac Catalina

    Engine Size

    Hello everyone. My name is H. Charles Carr. I'm a new member here and I'm sending you this from Amarillo, TX. I recently purchased a 1968 Pontiac Catalina from a widow here in town. She informed me that the car had a 455 in it, which she said was rare for that make and model. I found a number stamped on the front of the engine block on the passenger side. The number is 101001 with the letters YX underneath. Also on the exhaust manifold are stamped the numbers 9779033. From what I can understand, this engine is either a 400, 428 or as the previous owner said, a 455. Can anyone tell me what exactly do I have?

  2. #2
    USMC Y2K_CAMARO's Avatar
    Join Date
    Jun 2008
    Location
    Rocky Point, NC
    Posts
    1,399

    Silver
    2000 Camaro Z28

    Welcome to the site! I'm sorry I cant help you with your question, but there are some very knowledgeable people here and I'm sure someone will be able to help you out. Enjoy your stay here and good luck with finding out what size your engine is.

  3. #3
    None Shall Pass Knight's Avatar
    Join Date
    Jan 2010
    Location
    East of Cleveland, Ohio
    Posts
    3,828

    Black
    99 WS.6 - Modified

    I don't think the 455 was available in 1968. Here's a good reference site that may help - Spotts Performance/ Pontiac engine ID

    - - - Updated - - -

    Oh, and g'day and welcome to the site.

  4. #4
    Junior Member
    Join Date
    Jul 2012
    Location
    Amarillo, TX
    Posts
    4

    white
    1968 Pontiac Catalina

    Quote Originally Posted by Y2K_CAMARO View Post
    Welcome to the site! I'm sorry I cant help you with your question, but there are some very knowledgeable people here and I'm sure someone will be able to help you out. Enjoy your stay here and good luck with finding out what size your engine is.
    Thanks. I appreciate it.

  5. #5
    Junior Member
    Join Date
    Jul 2012
    Location
    Amarillo, TX
    Posts
    4

    white
    1968 Pontiac Catalina

    Quote Originally Posted by Knight View Post
    I don't think the 455 was available in 1968. Here's a good reference site that may help - Spotts Performance/ Pontiac engine ID

    - - - Updated - - -

    Oh, and g'day and welcome to the site.
    Thanks. I appreciate it. Let me guess. You're from the "Land down under?"

  6. #6
    Junior Member
    Join Date
    Jul 2012
    Location
    Amarillo, TX
    Posts
    4

    white
    1968 Pontiac Catalina

    Thanks. I appreciate that. Let me guess. You're from the "Land down under?"

  7. #7
    Former Mopar Man 2002ssslp's Avatar
    Join Date
    Jun 2011
    Location
    Branchville, NJ
    Posts
    3,111

    Silver & Blue
    02 Camaro SS, 04 GTO

    Welcome to the site. Don't worry about what engine you have, just enjoy the ride. My wife always told me that size doesn't matter. I guess it's true.

  8. #8
    Junior Member speedfreak1's Avatar
    Join Date
    Mar 2011
    Location
    Parma,Ohio
    Posts
    37

    Red
    1999 trans am

    Pontiac did not make a 455 then they came out in 1970-76. If you get under the car it should say on the side of the block. if your lucky it may be a 428 which are very good motors only made i think from 67-69.

    Sent from my ZTE-Z990 using Tapatalk 2

  9. #9
    None Shall Pass Knight's Avatar
    Join Date
    Jan 2010
    Location
    East of Cleveland, Ohio
    Posts
    3,828

    Black
    99 WS.6 - Modified

    Quote Originally Posted by ccarr1972 View Post
    Thanks. I appreciate that. Let me guess. You're from the "Land down under?"
    Actually, I'm from Ohio.

  10. #10
    Now in Summit LT1 Flavor! Y2KArcticSS's Avatar
    Join Date
    Mar 2007
    Location
    Henryetta/Tulsa Oklahoma
    Posts
    3,483

    Summit White
    2016 Camaro SS

    YX is a 67 code for a 400 with a Turbo 400 trans. Your 68 could be an early 68 with a 67 block. I found similar codes to your 9779033 but no exact match on the sites I looked up. The similar codes with 977----- were all tied to 400's as well. At least on the site I found the most relevant data on.

    http://www.pontiacpower.net/engcode01.html

    Sent using my telèfono

    2016 Summit White 1SS - The DD
    2001 NBM Trans Am WS6 - Wifey's Grocery Getter
    2000 Arctic White SS #1667 - Sold

  11. #11
    Member cowstandmoto's Avatar
    Join Date
    Mar 2008
    Location
    Houston, Texas
    Posts
    341

    Dark Blue Metallic
    2002 Trans Am WS6 M6

    Welcome to the site Herbert! You have come to the right place. There are a bunch of awesome people here!

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. LS1 valley cover bolt size, what size?
    By Blue28 in forum External Engine
    Replies: 1
    Last Post: 10-03-2009, 06:47 PM
  2. Question: What size wheel studs? OEM size?
    By x10-wakerider in forum Wheels and Tires
    Replies: 2
    Last Post: 06-20-2009, 09:26 AM
  3. Engine size and CR calculator
    By IT_SS in forum Internal Engine
    Replies: 1
    Last Post: 04-26-2009, 01:25 PM
  4. Is the MAP table related to the size of the engine
    By Doc99SS in forum Computer & Tuning
    Replies: 7
    Last Post: 04-08-2008, 10:39 PM
  5. Engine stand bolt size for ls1
    By 95GreenZ28 in forum General Help
    Replies: 1
    Last Post: 06-26-2007, 12:48 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •