Whats a good cam that's agressive that I wont have to change my stock rockers on a 78 460

 

That's a loaded question.MUCH more info is needed.Regarding cam lift to retain pedestal style rocker arms,you will be safe with a 0.535" lift.For cam specs such as duration,lobe separation and intake centerline,you need to know:vehicle weight,intended use,gearing,tire size,auto or manual trans,compression ratio,etc...Camshaft manufacturers are your best resource for cam choice.Also look to custom cam grinders.460ford.com is a good source for vendors.

 

It's a 78 f250 built for tug a truck but will get driven on the road once in awhile and the motor is stock except for carb and intake

 

It is auto and will weight 6500 pounds. Need more low end but want an agressive idle

 

You're best to stay with a short duration cam to help build cylinder pressure.Likely has 8.5-1 compression ratio or less.Free flowing exhaust with headers(longtubes) will help alot.I like the Comp Cams 4x4 grinds.Short duration,dual pattern cams for lots of low RPM torque.Look at 34-2321-4.It has 210/218 deg. duration @.050 lift which is great for low end power.It's hard to be humble with cam selection.With all stock engine,gearing,conveter,CR,and valvetrain,you're best to stay conservative with duration and lift.

 

Ok thanks for the help I will look further into it and do some more reading up