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67 440 cc heads #499395 10/17/09 11:52 AM 10/17/09 11:52 AM
Joined: Aug 2009 Posts: 135 Indiana O Osyman OP member
Osyman OP member O Joined: Aug 2009 Posts: 135 Indiana	does anybody know what cc the closed chamber heads were?

Re: 67 440 cc heads [Re: Osyman] #499396 10/17/09 01:52 PM 10/17/09 01:52 PM
Joined: Jan 2003 Posts: 2,077 Oklahoma City Jwilli500 top fuel
Jwilli500 top fuel Joined: Jan 2003 Posts: 2,077 Oklahoma City	Usually the published # is 78cc but castings can vary quite a bit. I CC'd some 516's once and got right at 81cc. My

Re: 67 440 cc heads [Re: Jwilli500] #499397 10/17/09 01:54 PM 10/17/09 01:54 PM
Joined: Nov 2004 Posts: 2,825 Sk. Canada RemCharger master
RemCharger master Joined: Nov 2004 Posts: 2,825 Sk. Canada	I measured 82 on my last set of 915s.

Re: 67 440 cc heads [Re: Osyman] #499398 10/17/09 02:26 PM 10/17/09 02:26 PM
Joined: Feb 2005 Posts: 4,310 Prospect, PA BSB67 master
BSB67 master Joined: Feb 2005 Posts: 4,310 Prospect, PA	My two sets are about 77 and 78. This is after new valves and clean-up resurface cut

Re: 67 440 cc heads [Re: Osyman] #499399 10/17/09 02:52 PM 10/17/09 02:52 PM
Joined: Jan 2003 Posts: 2,077 Oklahoma City Jwilli500 top fuel
Jwilli500 top fuel Joined: Jan 2003 Posts: 2,077 Oklahoma City	Best bet would be to cc the heads you have(all 8 combustion chambers). Decide what you need. Then see if you can "cut" em to what you want. General rule of thumb for closed chamber is .0062" cut per 1cc. Your mileage may vary!

Re: 67 440 cc heads [Re: Jwilli500] #499400 10/17/09 02:57 PM 10/17/09 02:57 PM
Joined: Jan 2004 Posts: 9,066 Eugene, Oregon minivan master
minivan master Joined: Jan 2004 Posts: 9,066 Eugene, Oregon	Quote: Best bet would be to cc the heads you have(all 8 combustion chambers). Decide what you need. Then see if you can "cut" em to what you want. General rule of thumb for closed chamber is .0062" cut per 1cc. Your mileage may vary! I can't remember what my 915's measured but they were no where near what the book said.. CC them is the only way to find out what they are..

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