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04-20-2024, 08:12 PM
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#1 |
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Registered User
Join Date: Nov 2009
Location: Sacramento, CA
Posts: 7
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Anyone recognize these heads?
I’ve looked around the internet for an ID of these heads based on the end casting. I’ll pull the valve covers off and get the numbers but thought I’d ask based on the pics. Motor came out of a ‘72 C10 but may not be original. Block is a 1969 4-Bolt that was decked removing the block stamping. Who knows where the heads came from.
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04-20-2024, 09:09 PM
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#2 |
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Moderator
 Join Date: Dec 2012
Location: ON, Canada
Posts: 2,168
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Re: Anyone recognize these heads?
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04-20-2024, 11:16 PM
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#3 |
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Registered User
Join Date: Nov 2009
Location: Sacramento, CA
Posts: 7
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Re: Anyone recognize these heads?
I looked at that chart. None really match.
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04-20-2024, 11:27 PM
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#4 |
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Registered User
Join Date: Dec 2016
Location: Canon City, Colorado
Posts: 115
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Re: Anyone recognize these heads?
There are a couple of casting numbers, that are associated with that casting shape. 598,993,997,487. Most likely early 70's-ish. You're going to have to check the actual casting numbers to know for sure.
Last edited by Grounded63; 04-21-2024 at 12:45 AM. |
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04-21-2024, 01:39 AM
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#5 |
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Registered User
Join Date: Apr 2019
Location: San Antonio
Posts: 122
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Re: Anyone recognize these heads?
These are the sybols,as stated above by Ground63, there are many casting numbers associated with that symbol. Casting number under valve cover will reveal your stats. Check it here: http://www.castingnumbers.info/site/search/
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04-29-2024, 02:54 PM
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#6 |
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Senior Member
 
Join Date: Oct 2007
Location: Marietta, GA
Posts: 800
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Re: Anyone recognize these heads?
The accessory bolt holes are drilled and tapped, so the heads are 69 or later.
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04-29-2024, 02:58 PM
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#7 |
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Senior Member
Join Date: Oct 2007
Location: Marietta, GA
Posts: 800
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Re: Anyone recognize these heads?
https://www.v8volvo.se/mekartips/ide...tifiering.html
Looks like "K" or "L" from the examples in the link above. |
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04-29-2024, 03:51 PM
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#8 | |
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Registered User
Join Date: Sep 2012
Location: Idaho
Posts: 648
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Re: Anyone recognize these heads?
Quote:
Its K http://www.v8volvo.se/mekartips/iden...tifiering.html
__________________
'81 K20 Silverado , '99 Dodge Cummins 4x4, '05 Dodge Cummins 4x4, Pinstriping-Lettering-Specialty Painting |
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04-30-2024, 09:01 AM
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#9 |
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Senior Member
Join Date: Feb 2010
Location: Lambertville, MI
Posts: 1,860
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Re: Anyone recognize these heads?
Send pics of the casting numbers under the valve covers. Its the only way to know for sure and also then you have to measure the actual valves as most heads may have been upgraded to bigger valves. Casting numbers can be researched and other specs like chamber size and runner volumes are known. The Chevrolet By The Numbers books are a good resource also.
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05-01-2024, 10:25 AM
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#10 | |
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Registered User
Join Date: Nov 2008
Location: kannapolis, nc
Posts: 525
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Re: Anyone recognize these heads?
Quote:
__________________
2000 c3500 utility bed 7.4l 5sp manual old body style. Cab and chassis 1964 GMC K10 383cu in/sm465/twin stick np205 1965 Chevy C60 |
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