Originally Posted by topfueldart
Originally Posted by AndyF
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.


I think a 263/270 cam is too big for TF240 head on a 440 at 6500 rpm but Dwayne would be a better person to ask. I used a Comp 264/268 with TF240 heads in a pump gas 470 to make over 700 hp. You might want to copy some stuff from that engine combo. A ported intake manifold was key to making power with the TF heads and the cam couldn't be too big. The TF heads are very efficient and if you use too big of a cam it kills the power.