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Carb options for Pontiac 287 4 barrel intake

Discussion in 'The Hokey Ass Message Board' started by poncho55, Oct 14, 2011.

  1. poncho55
    Joined: Oct 12, 2011
    Posts: 29


    I have an original 4 barrel intake for a Pontiac 287 motor (currently, the 2 barrel set up is sitting in place on my motor). The original Carter carb needs a complete rebuild as I think the hood must have been off of the donor car for 20 years! What are the options that I can put onto this intake? Cast # 521208. I have a 200 4R that I am hoping to have hooked up before winter and it has a TV Cable that needs to be mated to the carb - just need a good carb. Suggestions?
  2. BigChief
    Joined: Jan 14, 2003
    Posts: 2,084


    There is an adapter plate that will allow a conventional square 4 barrel carb to bolt on where a WCFB currently resides. Vintage Speed, maybe Speedway and others carry them. Nice gentle tapers and works well. Once you get that spacer/adapter then any modern Holley or Edelbrock will bolt on.
  3. I have a '56 intake here that I pulled and stupidly did not take the carb with me and I am pretty sure it had a 4GC on it. Manifold is funky in that the rear venturi look like they're tacked on a 2bbl casting, there's no flat base around them like later intakes.

    You might have been better off to dig up a '57, '58, or '59-'60 manifold, they will fit the early motor but take a Carter AFB, which means you can buy the repop clone Edelbrock, more or less bolt it right on, and go. (the repop is a Chevy verson so there are some differences to it).
  4. carbking
    Joined: Dec 20, 2008
    Posts: 3,088


    Not a transmission specialist, so don't know for sure; but it would be my guess that it would be MUCH easier and probably less expensive to fabricate a bracket to attach the cable to the original carb (after you rebuild it) than it would be to make any A.M. carb run the engine as well as the original.


  5. KoolKat-57
    Joined: Feb 22, 2010
    Posts: 3,033

    from Dublin, OH

    You do realize that your starter attaches to the bellhousing on that engine.
    I hope that your adapter takes that into account when you install the 200 R4 transmission.
    A 500 CFM Edelbrock 4 Barrel and an adapter or 57-58 4 barrel manifold should do the trick.
  6. bryan6902
    Joined: May 5, 2008
    Posts: 1,137


    Square bore to spread bore adapter with a Holley 600cfm on mine. Works fine with the original Hydro, just had to modify the TV linkage a little. Also converted to a throttle cable instead of the old rod.
  7. poncho55
    Joined: Oct 12, 2011
    Posts: 29


    Thanks for the great details! I will definitely look into the adapters. The tranny adapter that I have ordered for the 200 4R is equipped with a starter hole on either side. You have to use a Mopar 2 bolt starter with it and the ring gear that comes with the kit. I'll take a few shots when in progress - should work out fine;). I am not sure about rebuilding the original Carter carb - it's pretty clogged up.

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