I looked up the castings on the heads. None of them are 305 heads.4 out of the 5 are 74'-80' 350/400 76cc sbc according to the #'s(333882). The odd one is a 67'-68' 307/327(3917290), not much use since I only have one. Anyways, any suggestions for re-building a pair of the others ie: valves, rockers, rods? I've never done much more than change parts and I'm on a budget but not in a hurry(the truck and the heads were free so I'm off to a good start there). I'm looking for mild street performance, just something that won't fall on its face when I leave a light, the way it does now...
Actually the reason they were free is the guys at one of the local oval tracks gave them to me because he thought they were 305 heads and they now run 350's only. They all look to be in decent condition, but I won't doubt your advice. Thats why I came here...Thanks
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