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Old 01-19-2007, 05:57 PM
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beehive springs

i have a set of aftermarket vortec heads already installed and if i were to install the beehive style valve spring and retainers for the vortec application would i have to check the valve spring height with a micrometer? the heads are new and never been milled. and id be changing them without moving the head.

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Old 01-19-2007, 06:26 PM
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When you remove the current springs you can replace the retainer and keeper and check the height, then compare that to the recommended height for the behive spring. If too loose you can shim, if too tight then you know what needs to happen. With the installed height worked out, turn the engine over by hand and check with a feeler gauge between the coils for clearance #'s when compressed.
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Old 01-19-2007, 11:27 PM
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This would be a good time to add some nice tools to your toolbox. Checking installed height will be a snap with these snap gauges (also called telescoping gauges).
http://www99.shopping.com/xPO-Centra...5_16_To_6_6_Pc
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Old 01-20-2007, 02:29 PM
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Quote:
Originally Posted by runn141
i have a set of aftermarket vortec heads already installed and if i were to install the beehive style valve spring and retainers for the vortec application would i have to check the valve spring height with a micrometer? the heads are new and never been milled. and id be changing them without moving the head.

Depends.
If the existing springs were set up at competent shop, NO. Install the new springs with the existing shims in place. Each new springs will be equal height to the old springs.

Do the beehives require the same installed height as the existing springs?

.050 in spring height often only changes the spring pressure 20 pounds or so, but they should be installed to recommended height or you can't expect proper performance.
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Old 01-21-2007, 03:34 PM
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What exactly are AFTERMARKET VORTEC HEADS??

peace
Hog
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Old 01-21-2007, 03:48 PM
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i say aftermarket because there new from gm performance parts never been used
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Old 01-21-2007, 04:20 PM
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Quote:
Originally Posted by runn141
i say aftermarket because there new from gm performance parts never been used
OK so they are production L31 heads then, cool. GM makes a few different Vortec heads now. The L31, the Largeport Bowtie Vortecs, The smallport Bowtie Vortecs and the Fasburn aluminum Vortec heads.

Simply drop in the Beehive Springs and retainers and go. You can use the 915 or 918 springs. OR you can get a set of LS6 springs and use teh Comp cams Beehive retainers to save some money and still get more lift from virgin L31 Vortec heads.

peace
Hog
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Old 01-21-2007, 04:21 PM
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Quote:
Originally Posted by Hogg
What exactly are AFTERMARKET VORTEC HEADS??

peace
Hog

Left over GM OEM heads are not considered aftermarket.

An aftermarket company called EngineQuest casts them in iron and aluminum, several port sizes originally for the circle track racers.

You can either click this link or Google "Enginequest heads"

http://www.eqcylinderheads.com/flow.html

I already posted this link in the OTHER thread that you were writing in.

Last edited by xntrik; 01-21-2007 at 04:32 PM.
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