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75 V8LUV
PostPosted: Sat Nov 03, 2007 7:37 pm 
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I just got a pair of SBC heads my girlfriends dad gave them to me he said they have been sitting under his work bench for 7 years I cant find a casting number on them at all. They are guide plated have 2.05 intakes and the valve springs are giant. They have the accessory holes and the only marking I can make out is GM 32 right in the center under the valve cover. I dont know what they are but I would like to find out since there isnt a casting number I dont know how to identify them.
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mytmouz
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PostPosted: Sat Nov 03, 2007 10:20 pm 
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hotrod80
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PostPosted: Sun Nov 04, 2007 11:36 am 
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Those are bad news ! Get rid of them now ! My address is .... :lol:
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75 V8LUV
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PostPosted: Sun Nov 04, 2007 5:02 pm 
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I think they are 387s partial casting number was machined off
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75 V8LUV
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PostPosted: Mon Nov 05, 2007 5:32 pm 
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Oops that was a typo the numbers that I am looking at are 487. They are under the intake runner looks like the remainder of the number was milled off. Im guessing the rest of the number was 3978487. Pulled out 4 or five bent valves last night.
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75 V8LUV
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PostPosted: Mon Nov 05, 2007 7:34 pm 
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Dropped them off at the machine shop tonight I was lied to. The valves are 2.02/1.60s and someone did a crap job of drilling some steam holes for a 400.
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Mad Dog
PostPosted: Mon Nov 05, 2007 11:08 pm 
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75 V8LUV wrote:
I just got a pair of SBC heads my girlfriends dad gave them to me .


What are you bitching at? the price was right,and you do'nt need 2.05 valves for a street motor :?

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