INTERNAL ENGINE MODIFICATIONS Valvetrain |Heads | Strokers | Design | Assembly

my turn for push rod questions

Old Sep 25, 2008 | 07:47 PM
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ok, i need to valve springs. i'm running 10psi and around 4800 rpm my eng stops pulling. i've decide to go with patriot golds. so here is my question. can i run my stock push rods? i ask this because i want to change my cam but i don't have the money now. so i don't want to change push rods just to have to change them again in a couple months.
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Old Sep 25, 2008 | 08:54 PM
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I wouldn't run the stock pushrods, they're definitely a weak link IMO.
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Old Sep 25, 2008 | 10:54 PM
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so say i want a ls6 cam. can i use 7.4's for both stock and ls6 cam? if i can do that then i wouldn't mind getting them.
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Old Sep 25, 2008 | 11:49 PM
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you can run the stock pushrods for now. look at this way. instead of bending a valve youll bend a pushrod. they are cheap tho like 70 bucks or so
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Old Sep 25, 2008 | 11:55 PM
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ive been running the ls6 cam with the 7.4 hardened rods with no problems or added valvetrain noise. been around 6 months. From what ive collected in that argument, you just lose some preload on the lifter, no valve lift loss. 90 bux on ebay for the pushrods comp 7.4's
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Old Sep 26, 2008 | 01:04 AM
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what do they "recomend" for ls6 cam? and if its like 7.425 can you use those with stock cam? what would happen if you bent a rod? just a lose in power or a lose in a head/motor? never researched this part of the build i guess i should have.
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Old Sep 26, 2008 | 08:57 AM
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Originally Posted by 4.8T
what do they "recomend" for ls6 cam? and if its like 7.425 can you use those with stock cam? what would happen if you bent a rod? just a lose in power or a lose in a head/motor? never researched this part of the build i guess i should have.
You will have a dead hole. Run the stock ones until you can buy the hardened versions, but measure them to see what size you actually need.
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Old Sep 26, 2008 | 07:25 PM
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so it won't destroy anything? are these things so weak that i have to worry?
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Old Sep 26, 2008 | 08:25 PM
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How high of rpm. I personally think you will be fine with that cam..
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Old Sep 27, 2008 | 06:18 AM
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Originally Posted by Wilde Racing
How high of rpm. I personally think you will be fine with that cam..
well when its said and done i would like to spin to say 6000 maybe 6500 but no more than that. this is why i was looking at the 2002 ls6 cam. but until i get the cam i figure no more than 6000 rpm if it will even pull that high. right now i would be happy to spin to 5000rpm but it will bearly do 4500. i will post a pic of a log from the track.

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