Push rod lenght

[Max lobato]

Hi!
Looking for any information on finding proper push rod lenght for my la 318. I put a thumper cam in it . Now i feel like the push rods may be too long. Has anyone seen any online info on how to properly determine the lenght or even better has anyone seen any youtube vids specific to a stock rocker arm set up on a 318?? Any info would be helpful.
Thanks
Max

 

[BeepBeepRR]

The principal is the same.. These are not specific to mopar but the idea is the same.

 

[Hemirunner]

Given the fixed rocker fulcrum and a hydraulic cam, with the lifter on the base circle, your pushrod length is the distance between the rocker and the lifter plunger + desired lifter preload.

 

[Max lobato]

Do you know if the push rods shoild be solid or if they should have the oil hole? The ones i received when my engine were rebuild were solid. No oil hole. The rockers have oil holes in them .

 

[Max lobato]

Picture of rockers

 

[beanhead]

That's correct, pushrods are solid and pushrod end is oiled through that hole in the rocker.

 

[Max lobato]

That's correct, pushrods are solid and pushrod end is oiled through that hole in the rocker.

Thanks!