'95 L67 heads on an '89 LN3
10-04-2006, 11:28 AM
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'95 L67 heads on an '89 LN3
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.
. 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.
10-04-2006, 11:32 AM
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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.
You might gain 5-10 horsepower on the top end of the power curve.
10-04-2006, 12:59 PM
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(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?
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