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Exhaust Manifolds Help

Discussion in 'The Hokey Ass Message Board' started by dgc15, Jun 15, 2010.

  1. dgc15
    Joined: Aug 23, 2007
    Posts: 140


    I put a 350 chevy and a 700r4 trans in my 51 Chevy today. I used Waltons mounts and trans crossmember. They are perfect. Everything bolted in like it was factory. I have the stock front end and steering.
    Has anyone done this? What did you use for exhaust manifolds? It looks like the drivers side is going to be a challenge. I really don't want to use headers if I can avoid it.
    Thanks for your help.
  2. Master of None
    Joined: Dec 18, 2009
    Posts: 2,279

    Master of None

    Pictures would help, but i think late gm trucks have rear dump manifolds on the dr's side.
  3. 53sled
    Joined: Jul 5, 2005
    Posts: 5,818

    from KCMO

    search button is your friend kimosabee

    88-98 chevy 2wd, 78-87 305 ho monte/el camino/malibu/cutlass/regal, ram horn on the passenger side.
  4. Deuces
    Joined: Nov 3, 2009
    Posts: 19,582

    from Michigan

    "67-'81 Camaros, '68-'7? Novas might work also..

  5. 56sedandelivery
    Joined: Nov 21, 2006
    Posts: 6,629


    We just did this swap. Avoid the "headers" made for this swap, they are mismatched side-to-side, and costly. You have several options, and ALL of them require an exhaust manifold whose "logs" are above the spark plugs. The first and easiest, is to use the early 55-56 SBC exhaust manifolds. The second would be 80's style 267-305-350 style manifolds, primarily found in Malibus and Camaros. The last style, are the ones we used. 94' Caprice "cop car" LT1 exhaust manifolds. They look somewhat like the 383-440 MOPAR exhaust manifolds of the 60's-70's in that they're "upswept", and then dump to the rear. You will have to plug/weld the AIR tube nozzle holes, and probably drill 2 additional holes in them to fit the heads better, unless you already have the 7 bolt exhaust flanges. We also took off the tin covers, and painted them with black BBQ paint. They look and sound good. You do need more clearance around the dumps where the firewall supports are. And sorry, I can't post pics. Butch/56sedandelivery.

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