Ok, the junkyard motor has "G" Heads, Guess thats grocery getter heads. Havent checked on the bown up motor yet. I had no idea heads made that big of a difference in HP. Like bolt-on power. So if i get these hi-performance heads, am I stuck with Hi octane gas?
Also, What kind of intake manifold are you guys running? I have the Performer Olds 455 #2151 as I mentioned, but Edelbrocks website says the Performer RPM heads require Manifold #7111. If thats true I cant upgrade heads without throwing away my manifold?
And do you think I should stick with the stock rods?
If you buy Edelbrock heads you should at least have the torquer manifold. Stock rods are fine for the power you'll be making. Gas depends on your compression. Bump up your compression to 10:1 and run 91 octane gas and you'll be fine.