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Projects 1956 Pontiac Gasser 389 swap

Discussion in 'Traditional Hot Rods' started by wvenfield, Oct 29, 2014.

  1. OahuEli
    Joined: Dec 27, 2008
    Posts: 4,894

    OahuEli
    Member
    from Hawaii

    Sorry it took so long to do the photoshop but here is an idea. 56 Poncho gasser wvenfield w slots.jpg
     
  2. 55chieftain
    Joined: May 29, 2007
    Posts: 2,146

    55chieftain
    Member

    I found some longer shocks and modified them to work. It allowed the rear end to drop down further without affecting the ride, I had 15x7 cragars with 235 60 15 and could get them off easily. The replacement monroe shocks were actually shorter than the factory ones and made it worse. How wide is the GTO rear I thought the newer ones were a little wider? The 8.8 explorer rear was a little under 60" and helped some. Guess if your cutting the 1/4's doesn't really matter.
     
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  3. wvenfield
    Joined: Nov 23, 2006
    Posts: 4,558

    wvenfield
    Member

    Much thanks......That helps with the wheel well cut to get some idea.
     
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  4. wvenfield
    Joined: Nov 23, 2006
    Posts: 4,558

    wvenfield
    Member

    I think I was told earlier that the GTO was a little wider. It was under my friends 55 Nomad that he drag raced. (It's ready to go). I have a line on a set of Vintage 15X8 and 15X4 Cragers but I have to find the time to go get them. (about 8 hour round trip)
     
  5. seb fontana
    Joined: Sep 1, 2005
    Posts: 5,521

    seb fontana
    Member
    from ct

    Looks good with radius wheel opening I think..
     
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  6. Deuced Up!
    Joined: Feb 8, 2008
    Posts: 3,174

    Deuced Up!
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  7. 55chieftain
    Joined: May 29, 2007
    Posts: 2,146

    55chieftain
    Member

    Just do it and don't look back lol
     
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  8. safari-wagon
    Joined: Jan 12, 2008
    Posts: 1,457

    safari-wagon
    Member

    But don't close your eyes when you do it...
     
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  9. wvenfield
    Joined: Nov 23, 2006
    Posts: 4,558

    wvenfield
    Member

    Trying to get up the nerve. So nice for 60 year old wheelwells. I have to think I can get a 10 inch slick in there. Should have the rear end in place in the next couple weeks. Will measure and measure and measure again before cutting.

    Frame is all welded up. Just waiting for a decent day to get it outside and degreased.
    DSC_6928 (1280x852).jpg
     
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  10. Skankin' Rat Fink
    Joined: Jun 18, 2006
    Posts: 1,585

    Skankin' Rat Fink
    ALLIANCE MEMBER

    Just found this thread and read the whole thing. Very cool.
     
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  11. wvenfield
    Joined: Nov 23, 2006
    Posts: 4,558

    wvenfield
    Member

    Frame cleaned....rear end out of 69 GTO about ready to go in......Just measuring out in the yard it's a 1/2 inch or so wider.
     
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  12. Snowman454007
    Joined: Apr 28, 2016
    Posts: 73

    Snowman454007
    Member
    from Austin, TX

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  13. wvenfield
    Joined: Nov 23, 2006
    Posts: 4,558

    wvenfield
    Member

    Wow, been a year........had some family issues and got delayed. Anyway, new directions and back at it. Hopefully it will roll again by the end of next week.

    frame2.jpg

    Found some fronts.
    IMG_20170621_152420710.jpg

    Different direction on the intake.
    dual.jpg
     
  14. wvenfield
    Joined: Nov 23, 2006
    Posts: 4,558

    wvenfield
    Member

  15. OahuEli
    Joined: Dec 27, 2008
    Posts: 4,894

    OahuEli
    Member
    from Hawaii

    Looks good! Are you going to leave the front frame tubing open?
     
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  16. wvenfield
    Joined: Nov 23, 2006
    Posts: 4,558

    wvenfield
    Member

    No, I got ahead of myself but the opportunity to do that presented itself. It still a foot too long or something like that. It will be cut off, rounded, filled and the paint touched up.
     
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  17. wvenfield
    Joined: Nov 23, 2006
    Posts: 4,558

    wvenfield
    Member

  18. Snowman454007
    Joined: Apr 28, 2016
    Posts: 73

    Snowman454007
    Member
    from Austin, TX

    Great looking progress sir if you ask me!!
     
  19. Nice job, so far.
    Now I have to question who advised using the 69 GTO rear? If it's the original 8.2 , they are not very strong,
    especially behind a healthy big inch Pontiac and a 4-speed.
    Going to suggest keeping it in the car show area at the nostalgia drags.;)
     
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  20. brut4s
    Joined: Sep 19, 2011
    Posts: 52

    brut4s
    Member

  21. ididntdoit1960
    Joined: Dec 13, 2011
    Posts: 803

    ididntdoit1960
    Member
    from Western MA

    isnt that what it was behind in the (even heavier) GTO?
     
  22. 55chieftain
    Joined: May 29, 2007
    Posts: 2,146

    55chieftain
    Member

    It's got bolt in axles , it should be fine on the street. my gto had a 428, 4.56 rear and didn't break, just wheel hopped real bad lol.
     
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  23. wvenfield
    Joined: Nov 23, 2006
    Posts: 4,558

    wvenfield
    Member

    Sorry I missed this. It is not stock. My friend had it behind his Nomad that had far more HP than my car will have. He was running 10 inch slicks and never broke it. I'm not going to be able to get that wide under mine. (at least initially) Even at that I do not have any false expectations. If I get into the 12's I'll be happy.
     
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  24. wvenfield
    Joined: Nov 23, 2006
    Posts: 4,558

    wvenfield
    Member

    Thanks......slow going. I have the emergency brake run and the firewall ready to paint. Once painted (this week) we will start putting it back together.

    It will be filled.

    [​IMG]
     
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  25. wvenfield
    Joined: Nov 23, 2006
    Posts: 4,558

    wvenfield
    Member

  26. Nice to see a Pontiac for a change, looks like you had a nice solid car to start with too, carry on...


    Sent from my iPad using H.A.M.B.
     
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  27. Mike Colemire
    Joined: May 18, 2013
    Posts: 637

    Mike Colemire
    Member

    This is a sweet build. I put a 99 explorer under my 40 in the aviator. I cut 3 inches out of the long side which made it 56 1/2 total. You can use a factory short side axle, I put Yukon axles in mine. They have 31 spline axles and disc brakes.
     
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  28. Did your friend have a 4 speed?
    My concern was because of the 4 speed.
    Now I even have more concern about trying to run in the 12's.
    What has been done to the rear?
     
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  29. loudbang
    Joined: Jul 23, 2013
    Posts: 14,716

    loudbang
    Member


    NICE Corvette :)
     
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