I'm no expert on the subject of making the ultimate amount of power out of a na motor, but I've seen people running them in the high 10s. One guy in particular has a 69 mustang with a na 351w running high 10s and it's pretty quiet, but I don't know if he has stroked it or not, but he does but a LOT of money into his car and is more concerned with going fast than he is about having it last a long time. I would say you might be able to squeeze 750hp out of a stroked 351, but it will cost you. Nascar makes around 850-950hp out of their modded 351s.
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65 fastback 347 DFI injected w/vic jr, TFS heads, MSD, cable T5 w/Hurst, 4.11 9", tc subframe conns, custom traction bars, griffen alum. radiator torq thrust D's, and a daily warrior
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