Thread: 289 c6ae heads Vs 1990 5.0 stock heads

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I have to concur with ricebasher. I run '66 289 heads on a 306 (.30 over 302) and it's got serious balls.

I don't know the exact specs on the heads and I'd be eager to know; I've been told that it's a free-breathing, high-compression head. What I DO know is that the response is killer and the torque shakes the whole car. I'm sure it won't stand up to a set of Trickflows, but I'm told it's as good as you'll get with cast-iron.

My suggestion is to try them both; swapping heads on a 302 is only an afternoon's work, and just costs you a set of gaskets.

And if you find that the 5.0 heads are more to your liking, PM me and I'll take those 289's off your hands. Seriously.