Re: boss 347
Well 2x .68 ar ratio and a Crane Cam 228/228 @ .050" .512/.512" lift. about 600+ hp to 900
im running 700 rwhp on a 331 with a ported cobra and used heads.(my back up motor dont ask)
boost depends on tubing size and turbo compressor volume.
airflow is different than boost. boost is a restriction reading.
i run 2 blow off valve's and two waste gates to allow boost to build quicker and limit boost for the street.
seriously though a .48 a/r would do it and sneak up on it. fuel and intercooler play a part also. you can get crazy horse power with that combo if you turn up the boost .
When i did my first build i was given the Corky Bell book and its great.
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89 with 331 t3'/t4 hybrids. upr Suspention worked out finnaly . 9.89 144 mph .
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