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Author Topic:   Vortec casting numbers
BGA
Member
posted January 16, 2004 01:09 PM
Could someone please post the casting numbers for the chevy vortec cylinder heads. Also does anyone have any experience with these.
Bruce


istock59
Member
posted January 16, 2004 01:14 PM
12558062 and 10239906



BGA
Member
posted January 16, 2004 01:25 PM
Thanks for the quick reply Istock. Could you tell me what type and year/s vehicles these heads came on. Also,do you have to have the vortec intake or can you make a non vortec intake work without to much trouble.
Thanks
Bruce


15a
Member
posted January 16, 2004 01:57 PM
Thanks to the forum for the help. I do have a question though. That is are vortec heads only on trucks? Or are they in vans and passenger cars too??
Bruce


JDTURNLEFT
Member
posted January 23, 2004 01:26 PM
Vans will use them but the cars are differant. I run them on a 406 in a modified. I am pretty impressed for what little I did to them, they work pretty good.


Mikey14
Member
posted January 23, 2004 01:58 PM
15a,

you can buy them straight from pace performance new drilled and taped for the older intake. OR with the spring upgrade already done. They dont offer one both drilled and taped and spring upgraded which is a bit of a bummer. If your rules allow I'd run the intake that fits on it though. Also, If you want to run cams with lift above 500, you need to put stonger springs in it which will require you to have the boss machined around the springs. This cost me $40. I've found these heads don't really like to much lift and do well around 500-509 max lift for the big 1/2 mile we run. There is a thicker gasket to use too to help the vortechs seal up better with the older intakes so try and use those. Some people have used a small bead of rv type sealant along the top to help it seal too.If you plan on turning these above 6100 rpm I'd get the long slot self aligning rockers too. Crane ones are around $179 or so. You can reuse your retainers and valves if you buy new, but upgrade the springs and rockers defineately. Screw in studs aren't needed as long as you don't go crazy on lift or spring pressure.

Just my opinion but get them to work right and you'll swear by them compared to older castings, these are great for lower compression stock racers who have to use a stock cast head.

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