i have a c code 289 with rebuilt but stock bottom end. it has a stock cam with a 570 street avenger, torker 289 intake, stock rear end, afr 165 aluminum heads, and free flowing exhaust. i want to rev it past 4 thousand with my new 5 speed but i just dont know if it is safe to go above 4 thousand on a stock bottom end. thanks for any help!
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