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THE oldsmobile rocket 303 324 371 394 post to end all other posts, (lasalle related )

Discussion in 'The Hokey Ass Message Board' started by RocketDaemon, Dec 19, 2006.

  1. HEATHEN
    Joined: Nov 22, 2005
    Posts: 7,591

    HEATHEN
    Member
    from SIDNEY, NY

    Lots of guys used to bore a 324 to 4 inches and use a standard bore 371 piston to make a 345. Yes, the 371 pistons will work, since Olds kept the compression height of the piston the same and raised the deck height of the 371 blocks to compensate for the longer stroke.
     
  2. But could I bore the 56 324 to 4.125"? A 1/4" bore.?

    Mike


     
  3. ZZ-IRON
    Joined: Feb 28, 2007
    Posts: 1,964

    ZZ-IRON
    Member
    from Minnesota

    good to know Paul, gotta check my 371? to see if it really is one the guy told me it was a 371

     
  4. HEATHEN
    Joined: Nov 22, 2005
    Posts: 7,591

    HEATHEN
    Member
    from SIDNEY, NY

    After 50+ years of cooling system corrosion? I wouldn't, if the block were mine.
     
  5. That's kinda what common sense was telling me, but I wasn't sure if there is enough cylinder wall there to bore that big. Thanks HEATHEN.

     
  6. Clik
    Joined: Jul 1, 2009
    Posts: 1,926

    Clik
    Member

    56 Olds Rocket 88 324 HEADERS? Are they available? This is a stock bodied car, not a Rocket shoved in a coupe or roadster.
     
  7. Large_911
    Joined: May 30, 2008
    Posts: 219

    Large_911
    Member

    I have never seen them, but I am building them w/ a buddy of mine this winter/spring for my 57 Olds w/ a 371 and his 55 Olds w/ a 324. It does not look like an easy task...LOL...it will be my first set. The hard part of sourcing flanges is done.
     
  8. REM/Mo
    Joined: Feb 24, 2008
    Posts: 281

    REM/Mo
    Member
    from Missouri

    Where did you find the flanges and how much$$$?
     
  9. mike1951
    Joined: Jul 15, 2007
    Posts: 706

    mike1951
    Member
    from Colorado

    I once met a guy who tried to sell me a 53 olds with a "308" in it...was he on crack?
    I tried to tell him 53 was the 303 with the highest hp for that engine...but he insisted it was a 308....am I stupid or is he?
     
  10. Large_911
    Joined: May 30, 2008
    Posts: 219

    Large_911
    Member

    I bought them on e-bay, but they look like Victory flanges. I do not recall the cost, but they were not too much. They are not cheap and thin -- nice work. I have a pic in my album along w/ copper gaskets I had made. Headers by Ed makes a beautiful flange for the early Rockets (his site is alive again!!).
     
  11. REM/Mo
    Joined: Feb 24, 2008
    Posts: 281

    REM/Mo
    Member
    from Missouri

  12. Large_911
    Joined: May 30, 2008
    Posts: 219

    Large_911
    Member

  13. 67 w30
    Joined: Oct 25, 2009
    Posts: 18

    67 w30
    Member
    from cairo ny

    im looking for the specs on e4 isky for 371 project .
     
  14. HEATHEN
    Joined: Nov 22, 2005
    Posts: 7,591

    HEATHEN
    Member
    from SIDNEY, NY

    .410 lift, 260 degrees duration, intake 20-60, exhaust 58-22, valve lash .015.
     
  15. Greg55_99
    Joined: Mar 3, 2009
    Posts: 39

    Greg55_99

    On another board, someone has a set of these rockers. Can anyone give some info about them and the company that made them?

    [​IMG]

    [​IMG]


    [​IMG]

    Greg
     
  16. MilesM
    Joined: May 28, 2002
    Posts: 1,206

    MilesM
    Member

    Says Thomas right on them. F85 might be a 215 or 300 Olds.


     
  17. Large_911
    Joined: May 30, 2008
    Posts: 219

    Large_911
    Member

    I think they are Thomas magnesium rockers and may have been known for breaking. I had a chance to buy a set once, but they were abused to say the least. I am sure someone will chime in that has more info.
     
  18. HEATHEN
    Joined: Nov 22, 2005
    Posts: 7,591

    HEATHEN
    Member
    from SIDNEY, NY

    They're the "good" version of Thomas rockers with the bronze bushings--some of them just ran on the magnesium. They'll fit any Buick/Olds 215, 300, or 340 V8, as well as the original odd fire V6.
     
  19. RATnROLL
    Joined: Oct 12, 2009
    Posts: 10

    RATnROLL
    Member

    Great rocket posts. Can anyone advise me as to where I can get steel shim head gaskets for a 371. The block has been punched to 4.125
     
  20. GOATROPER02
    Joined: Mar 22, 2006
    Posts: 2,059

    GOATROPER02
    Member
    from OHIO

    I have MLS gaskets in stock for your Olds

    Tony
     
  21. RATnROLL
    Joined: Oct 12, 2009
    Posts: 10

    RATnROLL
    Member

    Is a MLS Gasket composite or a single layer? The ones I took out of the engine are McCord I believe. Im looking for a factory style gasket that came with the J-2 which is a single later gasket.
     
  22. GOATROPER02
    Joined: Mar 22, 2006
    Posts: 2,059

    GOATROPER02
    Member
    from OHIO

    Multi Layer Steel .038

    I have 1 set of export gaskets[steel] also .025

    Give me a shout

    Tony
     

    Attached Files:

  23. RATnROLL
    Joined: Oct 12, 2009
    Posts: 10

    RATnROLL
    Member

    Is the export gasket a single layer or muiti layer .025? Im trying to boost the compression as much as posible because I'm using 361 dodge pistons in this block. Can I use these gaskets with the 4.125 bore? Thanks for your help. Wes
     
  24. GOATROPER02
    Joined: Mar 22, 2006
    Posts: 2,059

    GOATROPER02
    Member
    from OHIO

    I just checked the export gask and they only have a 4.110 bore ....single layer

    Our MLS gask accept up to a 4.195 bore

    I would use the bigger bore and trim the heads accordingly to get desired comp ratio

    Give me a call if I can help more

    Tony
     
  25. adventurer
    Joined: Aug 1, 2006
    Posts: 385

    adventurer
    Member

    Can a 49 303 be bored to 324 dimensions? It's possible to mate with a FORD pattern T5?
    Am new to Olds engnes and need some help and hints.
     
  26. Wolfie
    Joined: Sep 17, 2005
    Posts: 150

    Wolfie
    Member

    WOW!!!.....I've seen this thread before and it's GREAT!!!......from 1966 -1969 I worked for Bell Auto Parts in Bell, California and one of the guys I worked with was TOTALLY Oldsmobile! To this day, he has every car he's ever owned........except one! His '50 Olds sedanette with 54,000 miles and factory standard transmission which is now in my garage. Of course now it has been nosed and decked, louvered hood (Courtesy Unkl' Al) Vintage air A/C system, Mr. Gasket shifter and 4 inches lower via Chevelle rear springs. Chuck, my buddy, bought Bell Auto Parts and continued running it unntil the early '80s and then shut it down. All the inventory from Bell still exists in sea containers in an undisclosed location in the USA. Chuck is now disabled and retired as am I. Keep the Rockets Running!!!!

    Wolfie
     
  27. HEATHEN
    Joined: Nov 22, 2005
    Posts: 7,591

    HEATHEN
    Member
    from SIDNEY, NY

    Yes, many 303s have been overbored to 3.875 over the years with no problems. As far as the Ford T5 goes, every Olds to Ford adapter I've seen uses the early ('49-'64) Ford trans pattern; I havent seen enough Ford T5s to notice if they have provisions for the early bolt pattern or not.
     
  28. blackrat40
    Joined: Apr 19, 2006
    Posts: 1,167

    blackrat40
    Member

    Has anybody heard from DON WOW , one of our Old's experts here?
    He has been a great source of Olds info here in the past.
    No recent posts(?).
    He doesn't respond to pm's and his personal email kicks back now.
    I hope he's OK and maybe just pissed at me or something.
    Can anyone check on him? He has grown hot rod sons who may be on here to.
    Chevelle guys I think. Don's all Olds.
     
  29. Paul
    Joined: Aug 29, 2002
    Posts: 15,532

    Paul
    Editor

    Isky roller cam, Chevy solids and Isky adjustable rockers

    [​IMG]
     

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