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Old 02-28-2010, 11:44 PM   #1
crushermechanic
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vortec head ?

i have a set of 906 vortec heads i am going to run on my 350. my cam lift specs are .479I .465e. will these heads work with new springs or will they have to be machined?
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Old 03-01-2010, 12:41 AM   #2
shortbed70
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Re: vortec head ?

I think you can run comps beehive spring with no problems but I would take them to a shop and have them check before you put it togather and tear something up.
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Old 03-01-2010, 01:14 AM   #3
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Re: vortec head ?

I have run a similar cam in an engine with Vortec heads that were upgraded to the 981 springs with no retainer to guide/seal issues. However you should always check your particular combination for proper clearances.
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Old 03-02-2010, 01:45 AM   #4
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Re: vortec head ?

Quote:
Originally Posted by crushermechanic View Post
i have a set of 906 vortec heads i am going to run on my 350. my cam lift specs are .479I .465e. will these heads work with new springs or will they have to be machined?
Are you running flat tappet or roller cam? It may make a difference, factory vortec springs are light pressure for rollers.
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Old 03-02-2010, 08:50 AM   #5
crushermechanic
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Re: vortec head ?

i am running a flat tappet cam. i am not running the stock springs. i bought the springs recomended for this cam.
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Old 03-02-2010, 09:40 AM   #6
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Re: vortec head ?

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Originally Posted by crushermechanic View Post
i bought the springs recomended for this cam.
that was a very wise decision. the right spring can make all the difference in a cams performance
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