Installing a performer intake on a 76 455

Discussion in 'The Bench' started by Stage 2 iron, May 4, 2021.

  1. Stage 2 iron

    Stage 2 iron 472 IRON HEAD STAGE 2

    Got a body down in Florida with a 70 Skylark clone to a white GSX has a 76 455. He’s looking to get rid of the smog intake and carburetor is it possible to put a Edelbrock performer intake manifold on 76 heads ? Thanks in advance for the help. 2B66C6F9-7BF2-4E43-9DF6-BDA71B28AA1B.jpeg 38A9AE73-2E8B-49CA-ADFE-D31BF5CC515D.jpeg
     
    GKMoz likes this.
  2. Electra-fied

    Electra-fied GR8WHTE

    It is possible, keep in mind the performer intake is thinner than the original intake manifold so you're going to have to use alternative fasteners instead of the factory bolts into the heads. You may need to also use an adapter plate from square bore to spread bore. If I remember correctly on mine, I still used the valley pan but you will use RTV sealant on the ends of the block versus the rubber strips. In terms of hooking up the carburetor to the 76 linkage, you will have to modify the bracket to accept a throttle cable versus a throttle rod which is on the 70 setup.

    Now the brutal honest part, you will not see very many gains from the intake manifold and the carburetor. The 1976 engine is too beaten down from all the EPA design within the engine itself. It's so beaten down that it's almost a waste of money to try and put a performer intake manifold onto that engine. To truly benefit from the performer manifold and the new carburetor, you need to have the 1970 heads from the 1970 motor to get some notable performance gains. It's what I did to my '76 LeSabre, and in reality I went with the factory 1970 intake manifold over the performer.
     
    Last edited: May 4, 2021
  3. Stage 2 iron

    Stage 2 iron 472 IRON HEAD STAGE 2

    Thanks for the reply, I think he really just needs a carburetor rebuild or use a 71 800 CFM Quadra jet just so he can drive the car with more ease.
     
  4. Electra-fied

    Electra-fied GR8WHTE

    Going with rebuild insures that it meets all factory mounting. Unfortunately there's no simple bolt on item that helps a "malaise days" engine setup.
     
  5. Stage 2 iron

    Stage 2 iron 472 IRON HEAD STAGE 2

    Yep he definitely picked the wrong 455 for the job.
     
  6. Electra-fied

    Electra-fied GR8WHTE

    Actually, if he changes the pistons to flat head, that engine has a good chance. The 76 block is "bullet proof"compared to earlier engines. It handles higher temps nicely due to more consistent cyl wall thickness. "Blue Blocks" have untapped potential. That's why I chose to keep mine in lieu of 70 block.
     
  7. sean Buick 76

    sean Buick 76 Buick Nut Staff Member

    I vote for swapping on a rebuilt Q jet from either Ken from Everyday Performance or Qpower (carmantx). I wouldn’t bother swapping the intake either I don’t see much of any gain.
     
  8. Stage 2 iron

    Stage 2 iron 472 IRON HEAD STAGE 2

    Thank Sean for the reply, he’s going to start with the fuel system New lines, fuel pump trying to talk him into a 70 Quadra jet new plugs, plugs wires.
     
    sean Buick 76 likes this.

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