I am thinking of setting aside my old 461 heads in favor of a pair of vortec heads on my 350.What vehicles would make the likeliest donors if I go the salvage yard route?What casting numbers should I look for to make sure they are vortec heads?Thanks in advance, Jerry

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66 El Camino 350 4 speed
68 Nova 454 4speed[url=http://community.webshots.com/user/11011954]My cars[/ur

I don't know a casting number but the only thing I know they came on is 350's in 96-first part of 99 trucks,tahoe and suburbans. (old body style)
Good luck

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Richard "Car addict without a cure"
-69 Kingswood wagon 427 w/fresh motor (for sale)
-65 Riviera (project)
-67 Chevelle concours wagon (project)
-78 Malibu w/mild 383
8.44 best 1/8th mile

You might get lucky and find a pair that's in good shape. They have to be out there. But if they have to be rebuilt, you will be better with just going with a new set from GM.

Later
Steve

The casting number should end in "906" or "062" You can tell them from other heads because they will be centerbolt valve covers and only have 4 bolts on the intake side as opposed to the normal 6.

Keep in mind that the Vortecs can be located in the Chevrolet/GMC vans, since these are the only vehicles using the GEN I small block.

Also, there are 2 other Vortec castings (the 059 and 520), which have smaller chambers. These small-chamber Vortecs are used on the 305 due to the 3.736" bore.

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<BLOCKQUOTE>quote:</font><HR>Originally posted by H5O:

Also, there are 2 other Vortec castings (the 059 and 520), which have smaller chambers. These small-chamber Vortecs are used on the 305 due to the 3.736" bore.
<HR></BLOCKQUOTE>

Yes - and keep in mind these also have smaller runners too

stick with 906 and 062's - can be had for under $500 new and shipped!

-Ryan



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