Are exhaust manifolds interchangeable?

Discussion in 'Small Block Tech' started by Kanad, Aug 16, 2019.

  1. Kanad

    Kanad Member

    I've got a 69 Buick 350 with a very damaged driver side exhaust manifold. I've found a manifold off a 72 Skylark on eBay, but on it's list of vehicles it works with 1971 is the oldest model of any model.

    Did the heads change between 69 and 71?

    Also this is a fsj 69 J3000 camper special, if that matters.

  2. MrSony

    MrSony Well-Known Member

    yes. interchangeable. in my experience it varied on what side had a bevel at the outlet and which had the heat riser.
    use them remflex gaskets.
  3. alec296

    alec296 i need another buick

    Its hard to say if the j3000 uses a different manifold. Post a picture. The jeep stuff may be different on the outlet. But otherwise the port design is the same for all 350 engines and can interchange with slight differences as in a exhaust crossover valve.
  4. 68Rivi_In_Cali

    68Rivi_In_Cali Well-Known Member

    I just took off my exhaust manifolds and they include the heat shield on the driver side. They are off my 1970 350. In case you are interested.
    angelorayhurst likes this.
  5. angelorayhurst

    angelorayhurst Well-Known Member

    If the op isn’t interested in the manifolds I may be.. Will message for info
  6. Darron72Skylark

    Darron72Skylark Well-Known Member

    I have manifolds that I just pulled off a motor acquired today. I’ll send them for freight. Let me know if you need or want them.

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