The TF 240 heads are very nice. I have about 100 dyno pulls on the 240 heads using various cams, intakes and carbs. Power ranges from 550 to 720 hp using out of the box castings on a pump gas 470. Very nice casting quality, excellent CNC port work, and high quality valve train parts.

Just a few things that people have to watch out for like the different rocker arm shaft studs, different head bolts, longer pushrods and intake gasket alignment.