Re: LT1 Rocker arms
Tony
I might be able to add a little more info.
Rocker Arm unit #3843359 stamped "O" on the inside of the pad end,& in 1970 changed to Part #3974290 also stamped "O" was used on:
*1962-69 all 8 cyl,(exc. 396-409-427).
*1970 all 302-307-350,& 400 w/2BC
So Yes,the 70-Z28 would have used these rocker arms.
Rick
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