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Originally Posted by XfireZ51
UR,
Just to clarify, if you've already done the exhaust and top end, you're saying the heads are worth an additional 50hp? Is that a porting job or does it include bigger valves, chamber work etc.? What's your take on the cam phasing?
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Dom,a complete 350ci with all the bells and whistles gets an average of 430 RWHP,your Z makes 390rwhp add heads it will get you to approx. 430rwhp a gain of 40 rwhp very close to the 50 crank HP.
Pete