I have a 305 tbi, I have to deal with it for another four months, I'm buying a brand new 350 (300hp) with 3 yr warranty. I can get a set of vortec 350 heads for $40 here at the junk yard. I wanna use these on my 305 with my new intake, just a small power boost til I can do my swap. What gasket could I use on a set of untouched 350 vortecs, so I can keep my compression (9.3:1) without a mill job, bc I plan to re use these on my future motor. Thanks guys.

 

While the Vortec 350 head is good, it's chamber is too large for a 305. You'll more than likely loose power from the drop in compression. Buy the heads and save them for the 350.

 

Well my car smokes do to valve seals, on crank up and take off. I was not going to try to replace the seals, maybe I'll just buy a set of regular heads as well, just to get me by.