[Dennis Kelley]

What are you going to do with the motor? You should easily gain 75 hp if that 351 W has stock heads on it. what type of pistons are in your shortblock. AFR 165 should meet your goal without any problem but the AFR 185's will allow you to grow into a stroker setup without running out of head. If your just wanting to add 85 hp do the heads cam and intake. AFR 165, Air gap RPM, and a mild cam and your there. Check out fordmuscle.com and on the front page they are testing the AFR 165 on a 347. You can't go wrong with either head but if you plan on stroking in the future get the 185's

later Dennis