? about Ford 460ci

[Z-EATER]

I have a built 466 in an 86 F-250, but I still have the stock crank and rods in it. I was wondering how many rpm's can the crank and rods can hold up to?

[bullitt482]

I wouldn't go over 5200 or so if you still have the stock timing chain, and valvesprings/rocker arms.

If that is upgraded. I've seen just a tad over 6000 on a daily driven stock bottom end 429/460.

[hottcobra]

^+1 with a stock valvetrain look for valveflot over 5K

[Z-EATER]

It has the stock crank and rods w/ .030 over pistons and a double roller timing chain. The heads have bronze valveguides, 351C roller rockers, 2.080/1.650 int/exh valves w/320 lb open spring pres. It has a 224/231 dur .588/.572 lift cam (rpm range unknown) and an edelbrock alum. intake that is matched to the cam. The rpm range on the intake is 1500-6500 and I assume that the cam is the same but I'm not sure and don't want to risk anything happening without knowing. And even if the cam is the same I'm not sure if the crank and rods can handle 6500 rpms. I have had it close to 6000, but just long enough to go up and back down while spinning tires.