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  • #16
    Re: bore size of a Gen V BBC

    Originally posted by min301
    Am I correct in the fact that the 502 and 454
    have two different deck heights?
    not that I know of.

    My fabulous web page

    "If it don't go, chrome it!" --Stroker McGurk

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    • #17
      Re: bore size of a Gen V BBC

      Originally posted by squirrel
      Originally posted by min301
      Am I correct in the fact that the 502 and 454
      have two different deck heights?
      not that I know of.
      It's the 572 that's a tall deck.
      sigpic

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      • #18
        Re: bore size of a Gen V BBC

        The 572 is only available in a 10.2" deck height.
        All other Mk IV, Gen V & Gen VI is an option of either 9.8" or 10.2". 9.8" being standard and 10.2" for truck applications.
        This was because truck pistions had 3 compression rings and their pistons had additional compression height.
        That's old and out-dated technology now, but the tall deck is a benifit for longer rods and/or stroker cranks.

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        • #19
          Re: bore size of a Gen V BBC

          continuing in my lack of knowledge - I thought 454/502s were only put in trucks after the 70s?
          Doing it all wrong since 1966

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          • #20
            Re: bore size of a Gen V BBC

            454 was available in light trucks starting in 1973. 502 was never installed in anything, it was only a crate motor. 496 (8100) was used in trucks in the early 2000s

            366 and 427 tall deck truck motors were available for a few decades, in medium trucks
            My fabulous web page

            "If it don't go, chrome it!" --Stroker McGurk

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            • #21
              Re: bore size of a Gen V BBC

              to clarify...... GM didn't put BB in cars after the 70s..... but perhaps they put them in cars in some crazy country where the toilets flush backwards ;)
              Doing it all wrong since 1966

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              • #22
                Re: bore size of a Gen V BBC

                Originally posted by Buickguy
                to clarify...... GM didn't put BB in cars after the 70s..... but perhaps they put them in cars in some crazy country where the toilets flush backwards ;)
                You could get a bb impala in the ninties and also 454 ss trucks,so where do we go from here?
                Keep smiling,makes them wonder whats on your mind.

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                • #23
                  Re: bore size of a Gen V BBC

                  Originally posted by CaminoKid
                  Originally posted by Buickguy
                  to clarify...... GM didn't put BB in cars after the 70s..... but perhaps they put them in cars in some crazy country where the toilets flush backwards ;)
                  You could get a bb impala in the ninties and also 454 ss trucks,so where do we go from here?
                  No BBC powered Impala's in the 90's, 454SS trucks yes, but not Impala's.

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                  • #24
                    Re: bore size of a Gen V BBC

                    Originally posted by min301
                    Originally posted by CaminoKid
                    Originally posted by Buickguy
                    to clarify...... GM didn't put BB in cars after the 70s..... but perhaps they put them in cars in some crazy country where the toilets flush backwards ;)
                    You could get a bb impala in the ninties and also 454 ss trucks,so where do we go from here?
                    No BBC powered Impala's in the 90's, 454SS trucks yes, but not Impala's.
                    last bbc car from the factory was a 1975 wagon
                    the laguna s3 lost it in late 1974 as an early '75

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                    • #25
                      Re: bore size of a Gen V BBC

                      Originally posted by Buickguy
                      to clarify...... GM didn't put BB in cars after the 70s..... but perhaps they put them in cars in some crazy country where the toilets flush backwards ;)
                      No big block was ever released in a car down here in the land of backward flushing toilets. :P Largest engine was a 351 Cleveland in many Fords and a 350 Chev in a HT Holden. (Bathurst edition only). Today the LS engines in Holdens are the largest to date. All small blocks though.
                      South Africa had a few muscle cars sold there but I doubt they had any either..

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                      • #26
                        Re: bore size of a Gen V BBC

                        Originally posted by urwurznitmahre
                        Originally posted by min301
                        Originally posted by CaminoKid
                        Originally posted by Buickguy
                        to clarify...... GM didn't put BB in cars after the 70s..... but perhaps they put them in cars in some crazy country where the toilets flush backwards ;)
                        You could get a bb impala in the ninties and also 454 ss trucks,so where do we go from here?
                        No BBC powered Impala's in the 90's, 454SS trucks yes, but not Impala's.
                        last bbc car from the factory was a 1975 wagon
                        the laguna s3 lost it in late 1974 as an early '75
                        1976 for the 455's.

                        Cadillac's were techically big block cars up until the demise of the 6.0L in '81 or '82.
                        Escaped on a technicality.

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                        • #27
                          Re: bore size of a Gen V BBC

                          The T/A kept one thru 79.

                          No the 403 was a SB Olds, but the 400
                          Poncho was a BB.

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                          • #28
                            Re: bore size of a Gen V BBC

                            Originally posted by min301
                            The T/A kept one thru 79.

                            No the 403 was a SB Olds, but the 400
                            Poncho was a BB.
                            the 400 pontiac WAS NOT A BIG BLOCK
                            THE PONTIAC 326/350/301/389/421/455 ARE THE SAME BLOCK ON THE OUT SIDE

                            THERE ISN'T A SMALL OR BIG BLOCK

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                            • #29
                              Re: bore size of a Gen V BBC

                              I don't consider the 301 a big block.

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                              • #30
                                Re: bore size of a Gen V BBC

                                Originally posted by min301
                                The T/A kept one thru 79.

                                No the 403 was a SB Olds, but the 400
                                Poncho was a BB.
                                Pontiac discontinued the 455 in 1976, the T/A's went to 400's and 403's.
                                Escaped on a technicality.

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