Howdy. As you guys have read, I've got the supercharged LN3 . I've read some mentioning of later heads having roller rockers. In my swap, I did not use the L67 heads.

Would I gain anything to make it worth it to install L67 heads on my LN3? WIll it bolt up fine? Thanks guys.

They're not necessarily "L67" heads. They are 92 L27/L67 heads (without roller rockers) or 93-94 L27 93-95 L67 heads. Call them Series 1 heads with roller rockers.

You might gain 5-10 horsepower on the top end of the power curve.

They are not full roller, though. No tip, just the fulcrum.

I see. Might be worthwhile to do in winter storage. But hell, might as well do performance rockers while I'm there

You can get Yella Terra full rollers for the 92 heads or the 93-95 heads.

(I googled). Seems like Australia has a better aftermarket for 3800s than the US. Since it'* still on topic, about how much power gain would rockers give me?