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Thread: BBC headers

  1. #1

    Default

    Alright,
    This thread is to help out any of you who are going to do what I just did.
    I stuffed a 427 (tall deck) into my 715 using the stock frame horns.

    I used motor mounts from a '70 Chevy pickup with a V-8 (all v-8's big or small use the same mounts) and stuck these on the stock frame horns in the stock location. The motor called for the firewall to be 'clearanced' about 2" on the passenger's side. I have an HEI distributor on the motor with about 3" behind it.
    The headers I got were from Jeg's and were Dynomax block huggers- part number 028985901 and were $119.99. They are black. The dump on these is about 2" below the bottom of the block. They cleared the stock horns, but with little room on the passenger's side and had to be clearanced a tad on the driver's side. The stock steering shaft is in a position where you have to beat the header pipe in about 1/2" to clear it.

    All in all- I was pleased with them. Cheap, almost a perfect fit, and allow me to run my exhaust over the frame rails before the body mounts to the frame.

    Stock exhaust manifolds will not fit if you use the stock horns and these motor mounts. On the driver's side they arched down too soon so that it was about 2" worth of clearencing you'd have had to do.

    I'm gonna post some pics monday of my stand-alone clutch linkage, and of the headers and such.

    -B.

  2. #2
    Join Date
    Sep 1998
    Location
    North Central Wisconsin
    Posts
    11,380

    Default

    COOL!!
    It's good to see progress, b-!!
    brute4c
    Lord send your Holy Ghost into our hearts and make the desire of our hearts Your Will.

    Pro-choice, that's a LIE, babies don't choose to die!!

  3. Default

    removed
    1969 M715

  4. #4
    Join Date
    Sep 1998
    Location
    North Central Wisconsin
    Posts
    11,380

    Default

    It's been done before...many times....
    brute4c
    Lord send your Holy Ghost into our hearts and make the desire of our hearts Your Will.

    Pro-choice, that's a LIE, babies don't choose to die!!

  5. #5

    Default

    Dan Archy,

    Show me some headers that fit a 715 that has had a low-budget big block conversion incorporating the stock frame horns, and I'll show you some headers that either cost more than $125 or have a slight dent in them.

    I look forward to seeing how you complete a swap.
    Kids. Sheesh.
    -B.

  6. #6
    Join Date
    May 2004
    Location
    Central Wisconsin
    Posts
    22

    Default

    FWIW...I was just looking at this tonight on my project....I can't decide between a 523 BB Ford/C-6/Atlas or a 502/TH400/Atlas combination...but what I did notice is the tubular "manifolds" on my 1985 454 Equipped Chevy pickup would clear the stock frame stands very easily...although the steering shaft if left OEM M-715 looks to be "close" One of the issues that's affecting my engine choice selction is the NEED for large primary SCJ sized headers if I run the Ford..and my fundemental lazyness regarding the concept of yet again custom building a set of headers. The Chevy looks easier...and since I have both........ *sigh*

    NoRM

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