[hemi joe]

just another update,you are correct imsport i was told the edelbrock performer will not seal properly and cause vaccum leak..thanks for the info.this is turning into a nightmare just for a set of heads..

[cool rockin daddy]

Joe, it shouldn't be a nightmare. You have to make sure that everything you are getting is Vortec compatible. You also need to understand what makes a Vortec a Vortec so you can understand what makes them tick. I believe the exhaust ports on a Vortec are about .200 inches higher than a standard head. Make sure your headers will clear everything being up that much higher, things like framerails, steering linkage, etc.

[hemi joe]

you are correct CRD i do need to learn more about vortecs.i saw in their add that these heads could be used with basicaly any intake manifold,and i jumped on it.i did not do enough research...

[cool rockin daddy]

Joe, here's a real nice article on the Vortec. Look at the pics showing the difference in intake port height. Hope this tells you all you need to know.

http://www.customclassictrucks.com/t...evy/index.html

[hemi joe]

thanks alot CRD that was a great article and pictures,i think i just learned something.once again thank you,joe

[hemi joe]

competion products just informed my the don't have heads for my motor??

[cool rockin daddy]

Good! Now, do yourself a huge favor. Go to Scoggin Dickey and order their vortec top end kit. Vortecs that are modified to accept .520 or .540 lift cams, I believe they are set up with guide plates (not sure), head bolts, manifold bolts, gaskets, and vortec manifold. Nice setup. Orrrrrrrrrr, you could go to Edelbrock and get yourself a set of aluminum E-tec heads which are said to make 15-20 hp more than the cast iron vortecs. While you're on the phone with Edelbrock order up one of their manifolds to fit those E-tec heads.

[hemi joe]

thanks CRD,i will look into both ideas.i apreciate all the help i can get...joe