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LT1-LT4 Modifications 1993-97 Gen II Small Block V8

help with cam and valve springs

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Old Dec 30, 2008 | 04:06 PM
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Default help with cam and valve springs
need help determaning what vlave springand cam i have in my old motor got car with bad bottom end and have no idea what is done to moter ecept it have some type of dual valve spring and guideplates and ported and polished heads and intake i can take pics to help explain what im talking about
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Old Dec 30, 2008 | 04:20 PM
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Default cam
cam is not round and rough between lobes it is sortof octagone shaped all flates around it
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Old Dec 30, 2008 | 05:19 PM
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Is there a part number on the end of the cam? That is the only way you will find out unless you send it somewhere to get spect.
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Old Dec 30, 2008 | 05:24 PM
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Default cma
no number on it i think from talking to other people its stock but i am curios how to find out what valve spring are on my heads
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Old Dec 30, 2008 | 05:30 PM
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Im not sure, but i thought even the stock cam had some kind of number on the end of it, maybe someone else will chime in.
You probably wont ever find out what kind of springs you have, but if your going through the trouble of rebuilding the motor id definitly put new ones in. Did it have roller rockers or stock stamped rockers?
Im just wondering why someone would use a stock cam in a motor with pp heads.
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Old Jan 8, 2009 | 03:39 PM
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Old Jan 8, 2009 | 03:49 PM
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Chances are good it's a GM cam. I'm looking at my old stocker right now. Look before the first lobe at the front of the cam (by the dowel pin). If you see the phrase GMPT BC 15 242 it's a stock cam.
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Old Jan 8, 2009 | 05:27 PM
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my says gmpt bc16 705
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Old Jan 8, 2009 | 06:35 PM
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the flat spots all the way around like that usually indicate a stock cam. thats what mine looked like atleast
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Old Jan 8, 2009 | 06:58 PM
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Well my custom grind has a number stamped like that..
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Old Jan 8, 2009 | 07:18 PM
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im just curios cause my heads ar ported and polished and i have diferent springs and guide plates
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Old Jan 8, 2009 | 07:59 PM
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Originally Posted by jdog_kustoms
im just curios cause my heads ar ported and polished and i have diferent springs and guide plates
Sorry, I shoudlve been more clear.. MY cam has GMPT BC 13 600 stamped on it BUT mine is a Re-grind from a stock cam..

May be a stupid qestion but does it lope at all?
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Old Jan 8, 2009 | 10:51 PM
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never got to here the car run i got it with a bad bottom end about every bearing on the bottom is spun
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