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09-03-2010, 06:15 PM
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#1 |
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Ex-Minitrucker
Join Date: Apr 2009
Location: Bushnell, FL
Posts: 301
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Need Help Identifying Heads
These heads are on a 350 and it looks like someone has ground the casting numbers off. I found an old thread on here that shows the end marks but none seem to match these. Anybody have any idea what they are cause I'm not gonna pull them. Attached pics are one of each end and the chart I found on here showing the end marks.
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68 C10 LWB 292 4spd 68 C10 LWB 250 3spd Last edited by 68lwb292; 09-03-2010 at 06:52 PM. |
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09-03-2010, 09:23 PM
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#2 |
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Registered User
 
Join Date: May 2007
Location: Rapid City South Dakota
Posts: 2,359
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Re: Need Help Identifying Heads
I believe those are 305 heads.
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Turp Mcspray New life for an old 2wd, farm blazer http://67-72chevytrucks.com/vboard/s...d.php?t=505987 My Blazer build http://67-72chevytrucks.com/vboard/s...d.php?t=342299 |
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09-03-2010, 10:00 PM
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#3 |
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Ex-Minitrucker
Join Date: Apr 2009
Location: Bushnell, FL
Posts: 301
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Re: Need Help Identifying Heads
I guess they could be. I've heard of people doing that to boost compression, but do they flow as good as a 350 head?
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68 C10 LWB 292 4spd 68 C10 LWB 250 3spd |
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09-04-2010, 08:28 AM
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#4 | |
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just can't cover up my redneck
Join Date: May 2004
Location: Columbus OH
Posts: 11,414
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Re: Need Help Identifying Heads
Nope, don't do it. They run out of air flow and fall flat on their face.
Someone is bound to tell you that you can put larger valves in them and have them ported for better flow....and you can. But the cost involved is greater that starting with a better head from the begining.
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You can review the site's rules here. Quote:
Bad planning on your part does not necessarily constitute an instant emergency on my part.... The great thing about being a pessimist is that you are either pleasantly surprised or right. 
Last edited by LONGHAIR; 09-04-2010 at 08:30 AM. |
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09-04-2010, 02:14 PM
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#5 |
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Ex-Minitrucker
Join Date: Apr 2009
Location: Bushnell, FL
Posts: 301
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Re: Need Help Identifying Heads
Thanks guys Found some more Head ID stuff on this website.
http://www.fastnuf.com/Headguide.html
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68 C10 LWB 292 4spd 68 C10 LWB 250 3spd |
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09-04-2010, 04:06 PM
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#6 | |
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Registered User
Join Date: Jul 2010
Location: MD
Posts: 1,937
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Re: Need Help Identifying Heads
Quote:
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1969 c-10 Step Side Long Bed. I-6 250cid =  = 1969 Pontiac GTO hard top. 400, 4-speed.
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09-04-2010, 02:36 PM
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#7 |
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Senior Member
Join Date: Jan 2005
Location: SUNNY WARM BIKE RIDING COTTONWOOD ARIZONA
Posts: 2,097
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Re: Need Help Identifying Heads
O “Saddle” and vertical bar 416 Late-model 305, conventional valve covers, intake port not restricted; lightweight; 57cc chamb
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09-04-2010, 03:53 PM
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#8 |
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Ex-Minitrucker
Join Date: Apr 2009
Location: Bushnell, FL
Posts: 301
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Re: Need Help Identifying Heads
Yea, thanks, I figured that out. I was posting this info for anybody that might want it. Thanks again guys for all the help.
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68 C10 LWB 292 4spd 68 C10 LWB 250 3spd |
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