[jim_howard_pdx]

If the car is primarily a street and highway car, the 351 C can be built to supply up to 500 HP very nicely. Unfortunately, the 351 C is a heavy motor. A 460 block, with offset grinding on the crank can give you 500+ cubic inches displacement, and with aluminum heads and intake you would have 600+ HP and weigh about the same. 600+ HP does not make for a good street or highway engine.

I would build a 351 W block, stroked to 408, run the new Trick Flow R heads with a solid roller cam. That will get you between 500-600 HP be lighter than the cleveland or the 460 and make as much power. You will need custom headers for this conversion. JBA may have them already.

The 460 can be modified to run 600-800 HP. If your friend likes drag racing. This is the only way to go.

He needs to reinforce his shock towers, run subframe connectors, and at least a 4 point roll bar to take the power of a 460. Its all in the torque, and a 460 delivers that in spades.

Hope this helps.