IMP zinc highly overrated.
Did use gm eos with 30w new cam and lifters for break ins.
None that paste goop sledge crap block filter in seconds.
Just 30w after 30 miles burning rubber.
Old school
.
Flat cam, good lifters and correct springs(thier usually problem)will break in fine or be furbar1st 5 minutes.
All this have to run 2500 rpm for 30 minutes is bs.
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If you cant drive from gas pump to gas pump across the map, its not a street car.
http://s207.photobucket.com/albums/b...hop/?start=100