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Thread: Holley 830 Carb. and Manifold questions

  1. #1
    Senior Member
    Join Date
    Feb 2009
    Posts
    1,593
    I am in the process of purchasing a Holley 830 (9381) that is fitted with a 50cc accelerator pump. It will probably need to be rebuilt and re-jetted.
    I am currently running a pretty much stock 468 with a Weiand 5981 Tunnel Ram with 2 Holley 600's. I want to change out the TR to a dual-plane manifold (Weiand WND-8013 or Edelbrock Performer EDL-2162) or a single-plane manifold (Dart DRT-41214000) and then I will replace the 600's with the signle 830 Holley. However, within the next year I would like to increase my HP to about 500 - 550 by changing the following:
    1. Comp Cam with a 292 Hydraulic Camshaft (244/246) duration at .050" lift .568/.578 110 Lobe
    2. Pocket ported oval heads with 117cc chambers fitted with 2.19" intake and 1.88" exhaust valves.
    3. MSD 6M
    The current RPM's are 4800 but I don't think the RPM's will be greater than 5400 or 5500 after the build with an A or A/B Imp.
    I don't think I should have any problems but just wanted some imput.
    The following are the questions I have:
    Will I have problems using the same 830 Holley for both applications?
    Should I use a stock jetting or what?
    Is the Holley to big for my stock set-up or too small for the later build what would be your suggestions?
    I am thinking with the RPM's I will be running I should go with a dual-plane manifold any suggestions?
    Thanks,
    Jerry

  2. #2
    Jet City
    I am in the process of purchasing a Holley 830 (9381) that is fitted with a 50cc accelerator pump. It will probably need to be rebuilt and re-jetted.
    I am currently running a pretty much stock 468 with a Weiand 5981 Tunnel Ram with 2 Holley 600's. I want to change out the TR to a dual-plane manifold (Weiand WND-8013 or Edelbrock Performer EDL-2162) or a single-plane manifold (Dart DRT-41214000) and then I will replace the 600's with the signle 830 Holley. However, within the next year I would like to increase my HP to about 500 - 550 by changing the following:
    1. Comp Cam with a 292 Hydraulic Camshaft (244/246) duration at .050" lift .568/.578 110 Lobe
    2. Pocket ported oval heads with 117cc chambers fitted with 2.19" intake and 1.88" exhaust valves.
    3. MSD 6M
    The current RPM's are 4800 but I don't think the RPM's will be greater than 5400 or 5500 after the build with an A or A/B Imp.
    I don't think I should have any problems but just wanted some imput.
    The following are the questions I have:
    Will I have problems using the same 830 Holley for both applications?
    Should I use a stock jetting or what?
    Is the Holley to big for my stock set-up or too small for the later build what would be your suggestions?
    I am thinking with the RPM's I will be running I should go with a dual-plane manifold any suggestions?
    Thanks,
    Jerry
    I think you'll be fine with the 830 in both applications, I would also pick the oval port heads (better port velocity at <5500) and a good dual-plane (RPM Air-Gap) for those power/RPM levels. Circle boats were limited to 440 inch and 830 cfm and made over 600hp (as a reference), so I doubt you'll have problems acheiving 500+ with worked oval ports. I would start with the factory (Holley) jetting, then let your plugs tell you were to go from there. Thats my 2 cents.

  3. #3
    Senior Member
    Join Date
    Feb 2009
    Posts
    1,593
    I think you'll be fine with the 830 in both applications, I would also pick the oval port heads (better port velocity at <5500) and a good dual-plane (RPM Air-Gap) for those power/RPM levels. Circle boats were limited to 440 inch and 830 cfm and made over 600hp (as a reference), so I doubt you'll have problems acheiving 500+ with worked oval ports. I would start with the factory (Holley) jetting, then let your plugs tell you were to go from there. Thats my 2 cents.
    Thanks JCR
    Is there a difference between these manifolds it looks as though they are the same?
    EDL-75611 http://store.summitracing.com/defaul...p%29&x=12&y=15
    EDL-75621 http://store.summitracing.com/defaul...p%29&x=12&y=15

  4. #4
    Jet City
    Thanks JCB
    Is there a difference between these manifolds it looks as though they are the same?
    EDL-75611 http://store.summitracing.com/defaul...p%29&x=12&y=15
    EDL-75621 http://store.summitracing.com/defaul...p%29&x=12&y=15
    Look under fitment, 75611 = large oval port, 75621 = rectangle port

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