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#41 |
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Senior Member
Join Date: May 2010
Location: new britain,ct 06052
Posts: 9,428
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Those look kile KOGEL hi-comp heads, available in two diff comp ratios, cast iron finned with 25% increase in water capacity. Not many made. I've a pair on my 40.
Paul in CT |
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#42 |
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Senior Member
Join Date: May 2010
Location: NJ
Posts: 7,226
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Yes, these are rare. I seem to recall an issue with them cracking, so I'd get them checked out before throwing them on a motor. It would be cheap insurance.
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#43 |
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Senior Member
Join Date: Jan 2011
Location: Central Ohio
Posts: 5,906
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Those are kind of cool - similar in concept the the KR heads.
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#44 | |
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Senior Member
Join Date: May 2015
Posts: 11,643
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Quote:
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#45 |
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Senior Member
Join Date: Sep 2011
Location: MI
Posts: 215
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Wow !!!
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#46 |
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Senior Member
Join Date: May 2010
Location: Chester Vt
Posts: 8,985
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Sponsored Links (Register now to hide all advertisements)
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#47 |
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Senior Member
Join Date: Dec 2013
Location: Minnesota, Florida Keys
Posts: 12,132
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Are those from an Oldsmobile?
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#48 |
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Senior Member
Join Date: Nov 2010
Location: Lancaster PA
Posts: 542
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I'm having a hard time seeing the shape of the chamber directly above the piston. It sort of looks domed, but not as domed as a stock chamber. Does anyone else see that, or does it look flat to you?
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#49 |
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Member Emeritus
Join Date: Nov 2012
Location: Wichita KS
Posts: 16,132
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Looks flat to me and I would assume mated to flat top pistons.
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#50 |
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Senior Member
Join Date: May 2010
Location: Chester Vt
Posts: 8,985
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Grancor combustion chamber
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#51 |
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Senior Member
Join Date: May 2010
Location: Chester Vt
Posts: 8,985
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Wish I knew how to make the picture bigger.
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#52 |
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Senior Member
Join Date: Dec 2013
Location: Minnesota, Florida Keys
Posts: 12,132
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That's a "thumbnail". I "Clicked" on it and it came up to a decent size.
You done good. |
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#53 |
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Senior Member
Join Date: May 2010
Location: Chester Vt
Posts: 8,985
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mtt
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#54 |
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Senior Member
Join Date: Nov 2010
Location: Lancaster PA
Posts: 542
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#55 |
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Senior Member
Join Date: May 2010
Location: Chester Vt
Posts: 8,985
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Thanks, those are the heads that were onmy Bville engine. I wonder where they are now??
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#56 |
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Member Emeritus
Join Date: May 2010
Location: Fitzgerald, Georgia
Posts: 2,204
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The Grancor are the better design for flow/power.
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#57 |
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Senior Member
Join Date: May 2010
Location: Chester Vt
Posts: 8,985
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As you can see the heads have a sligth popup for the 3 3/4 stroke pistons. Also the piston clearance. I made a doming tool to equal the clearance. simple HC.
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#58 |
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Senior Member
Join Date: Jan 2011
Location: Central Ohio
Posts: 5,906
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I like those chambers . . . wished I owned a set of those heads! Anybody got a "spare set" that they're not going to use???
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#59 |
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Senior Member
Join Date: May 2014
Location: Lafayette, La.
Posts: 100
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aren't the Rocket heads kind of a mirror image? That is they have a deeper trough on the exhaust side.
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