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Will 305 heads bolt onto a 350?

Discussion in 'The Garage' started by deek, Apr 15, 2004.

  1. deek

    deek 1/2 ton status

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    I got a set of Rebuilt heads for $$free$$ /forums/images/graemlins/thumb.gif, but i was told that they might be for a 305? would there be any difference between the 305 & 350? If so what should i look for? & once again are they interchangeble?
     
  2. rnss82

    rnss82 Registered Member

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    im not to sure but i think they will bolt right on but make suure the combstion chahmber cc isnt to same
     
  3. Z3PR

    Z3PR Banned

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    Yes they will. Most 350's have a 76cc head as where the 305 has a 58cc head.
     
  4. BlackDog714

    BlackDog714 1/2 ton status

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    [ QUOTE ]
    I got a set of Rebuilt heads for $$free$$ /forums/images/graemlins/thumb.gif, but i was told that they might be for a 305? would there be any difference between the 305 & 350? If so what should i look for? & once again are they interchangeble?

    [/ QUOTE ]

    [comic book guy] Worst Heads EVER! [/comic book guy]
     
  5. unick

    unick 1/2 ton status

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    sorry to hijack but why would you want to put smaller heads on? Does it increase the compression?

    lmk
    Nick
     
  6. deek

    deek 1/2 ton status

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    THERE FREE! /forums/images/graemlins/deal.gif
    & im in the proces of rebuilding, but is on a buget. so i figure I can do the bottom end now, & run the new rebuilt (complete) heads, then when I recive the funds I can go with larger heads, ...can we say vortecs
     
  7. RustBuket

    RustBuket 1/2 ton status

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    They don't flow as well but compression will be pretty high so that may make up for it.
     
  8. kennyw

    kennyw N9PHW Premium Member

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    Post the casting #'s and someone can probably give you an answer on what you have. /forums/images/graemlins/thumb.gif
     
  9. beater_k20

    beater_k20 Banned

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    [ QUOTE ]
    They don't flow as well but compression will be pretty high so that may make up for it.

    [/ QUOTE ]

    the compression will make more power, but the newly found restrictions that some 305 guys try to pass off as ports and valves will kill any chance of making the power known when you get on the loud pedal.
     
  10. parker

    parker Registered Member

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    yes they will be just fine 58 cc combustion so good gas only retard your timing and enjoy alittle extra horse power
     
  11. cybrfire

    cybrfire 1 ton status Vendor GMOTM Winner

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    Yep, they will for sure bolt on. Bump your compression a little and as somebody said they won't flow as well but they make better low end torque. great for a truck.
     
  12. CyberSniper

    CyberSniper 1/2 ton status Premium Member

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    Well, truck heads and 305 HO had 1.84/1.50 valves and 58cc chambers.

    Post up the casting numbers or look them up yourself to find out what they are for sure.

    305 heads are a poor head solution as far as performance goes. However, it's hard to beat free.
     

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