The TF240 heads are good for 600 hp out of the box but everything else needs to be properly matched. Your compression ratio will most likely go up so you need to figure it out before you order parts. Are you willing to run race gas? You might need it with the TF heads. Are you running open headers? Figure out what your target trap speed is and work backwards to figure out the trap RPM and then see where that puts you for the camshaft. Quick math shows 6850 RPM at 135 with 5% slip. I'd guess 135 is pretty optimistic for this combo, and 132 would be more reasonable, and that shows 6677. The 263/270 Comp RX296R-8 is a 4000-6500 powerband, and 110 fuel is not out of the question if needed.
11.48 @ 120 with a 1.80 60' 318, stock 1.88 heads, stock 904, Pump Gas, 13 lbs of boost.
9.94 @ 134, 318 on pump gas, 14 lbs w/ Eddies, transbrake 727, 3600 lbs, 3.54 gear and 28's.
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