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Old 09-14-2004, 06:20 PM
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vortec head question

I have a 350 with the vortec heads with a comp cams 480 lift cam, i installed heavier springs, have the comp hydrolic lifters, have question about the rocker. I bought the self aligning rocker the heads required but will they bind on the valve when they close?

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Old 09-14-2004, 09:54 PM
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Think its probably the spring that's the problem. Stock vortec heads require a bunch of work to go beyond .450 lift without springbind. Do a search, this topic has been covered to death, and you'll get your info quicker too!

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Old 09-16-2004, 11:22 PM
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Vortec Heads

Hey Metalmulisha3x,

I recently took a pair of Vortecs to the shop. They did a valve job and also ground down the valve guide boss in order to fit the heavier Z-28 springs on. I also plan on running the Comp Cams Xtreme Energy 262. Is this what you have? Plan on getting Edelbrock RPM Air-Gap Intake and a decent set of headers. I'm also running flat-top pistons which should put compression around 10.3:1 which should be able to run on 91, I hope. Should be a decent combination. As far as rockers go, I am using the original ones that the heads came with. They should work as far as I have been informed. Anyway, still have to buy the intake, cam, gasket kit, and headers. It's going in a pickup. Just curious to see how your combination runs since it is similar to mine. Any HP and torque estimates? Let me know. Thankx.
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