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#1
08-22-2008, 11:39 PM
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Re: 70 z rocker arm #'s
I don't have the part number at my finger tips. I think that the "O" is the only number on the rocker. If it does not have an "O" on the rocker its not what you want for originality. Put the roller tips on. Its not worth buying NOS "O" rockers in my opinion. Manley, I believe also makes a real good standard rocker arm for the 302/LT-1.
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#2
08-22-2008, 11:48 PM
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Re: 70 z rocker arm #'s
When I did my motor a few years back (it's that long ago?
 ) I used the Crane stamped steel roller rockers.  For some reason I am thinking that later on the O stamp was replaced with a "V" or an arrow of some sort to note hi-perf? Anyone else smoking what I am? 
__________________
1969 Z28 1972 Corvette
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