Originally posted by gearheadnate+Nov 17 2005, 09:09 PM--><div class='quotetop'>QUOTE(gearheadnate @ Nov 17 2005, 09:09 PM)</div>
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<!--QuoteBegin-99SilveradoSpeed
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@Nov 16 2005, 05:34 PM
hey guys,
i can soon aqcuire a set of Z06 heads and Z06 cam brand new for about 800 dollars through a friend...
i have a 99 ECSB silverado with the 5.3...
how much of a performance increase would this add???
i currently have just the K&N intake and BORLA exhaust...
also is this a good combo to put on my engine for a decent daily driver HP upgrade????
thanks guys...
If I was you I would reconsider the Z06 heads on a 5.3. The Z06 heads are the same as LQ9 heads but with smaller combustion chambers. I have a book thats all about gen III engines and they put a set of Z06 heads on a 5.3 and lost HP and torque. They recomended the z06 heads on a 5.3 if it had forced induction. [/b]