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Valve springs?

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Old 05-04-2005, 06:27 PM
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Default Valve springs?

Narrowed my problem down to possible Valve Float problem. Dennis mentioned it might be a problem when my car was on the dyno but I tried to look into other areas first because I knew my Fuel Pump was weak and I was throwing a 511 code and found a chaffed wire on the computer. but I replaced the Pump and the wire but still having problem so I am looking into valve float being the problem. does anyone know a spring that I can use that wont require machining and can handle a factory cam with 1.72:1 Roller Rockers and GT-40 Heads. thinking 110lb seat pressure should be right(guessing) Thanks in advance for any help you can give.
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Old 05-04-2005, 06:36 PM
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i got the replacement crane valve train set for i think 120$ish? handles up to like .560 lift. more then enough for stock cam specs.
Old 05-04-2005, 06:46 PM
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any idea of part number?
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Old 05-04-2005, 07:00 PM
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think the TFS setup requires machining of the heads.but will call them tomorrow.
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"Congressmen who willfuly take actions during wartime that damage morale and undermine the military are saboteurs and should be arrested, exiled or hanged".
President Abraham Lincoln
Old 05-04-2005, 07:04 PM
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called jegs and they told me that there are no springs for 5.0L that dont require machining although I doubt it. they reccomended a set of crane springs that require machining. if I have to I will have it done but there's got to be some that dont.The heads I have are GT-40 Not P with factory springs so Valve float makes sense, just didnt think would happen with a factory cam and at the horsepower level that I'm at. but I guess it does happen.
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" When you men get home and face an anti-war protester, look him in the eye and shake his hand.
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"Congressmen who willfuly take actions during wartime that damage morale and undermine the military are saboteurs and should be arrested, exiled or hanged".
President Abraham Lincoln
Old 05-04-2005, 08:56 PM
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if so i'll buy them they come with everything if not will try the crane stock replacement.
didnt the cobra have 1.7 rockers and a .444 lift cam how did the springs keep the valves from floating in stock form? also side note Mars did you get any pics of my car?
green SN-95 with black cobra hood?(had accident lately)
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" When you men get home and face an anti-war protester, look him in the eye and shake his hand.
Then, wink at his girlfriend because she knows she's dating a pussy." General Tommy Franks


"Congressmen who willfuly take actions during wartime that damage morale and undermine the military are saboteurs and should be arrested, exiled or hanged".
President Abraham Lincoln
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