Pushrods

[Bluemonster71RT]

I'm trying to find the pushrods that I need for my 383 with adjustable rockers. The stock ones are 5/16" ball-ball. I need ball and cup.  I found more than a life time supply for 413-440 and 273-360.
Anyone know where to get what I need or recomendations.  I have harland sharp 1:6 shaft and rocker kit to go on Edelbrock alum heads. 

[Chryco Psycho]

My first recomendation is Smith Bros in Bend Oregon , talk to Pierre , But you need to measure the length you need , so you need a pushrod checking tool , you want approx 2 threads on the adjuster showing below the rocker arm & the lifter has to be on the base circle of the lobe to measure correctly .
The second choice is comp cams , they have a variety of different lenghts available but none of them are right in my experience , too long or short .
The lifter used will alter the length of the rod needed so there is no std length that just fits .

[ek3]

comp cams sells an adjustable pushrod tool.  you can use a sharpie [ink pen] to color the valve stem ,then adjust the rocker arm to - o -lash or pre- load if its a hyd lifter. then roll the eng. over a few times then,  remove the rocker and  look at the stem. if it is rubbed off closer to the top [intake side] you need to adjust longer. if it is rubbed off to the lower side then shorter push rod is needed.  the rocker tip contact point should be just up [twoards intake side of eng] from center when on the heal of the cam lobe and roll just past center @max lift. once you get the length just order a set that size ! ....  incorrect push rod length will screw up your valve guides among other problems ..

[mopar12372]

what size is the stock push rod so you  can get an idea of how long of a push rod checker to get?

[Bluemonster71RT]

Thanks guys! I'll order me the tool and start there.

[Bluemonster71RT]

Ok so I have my pushrod check tool.  I understand most of what you said Buddy but the pre-load part.  SO as the lifter pre-load am I correct to think that it should be depressed all the way for correct length of pushrod? And according to the dystructions on the harland sharp site, there should be no more that 2 threads showing on the adjuster. So for the length of the pushrod should I set the adjuster to 1 thread max, then measure for length?

I have read and seen so many ways of doing this that I am no unsure of how to do it correctly. Also most ways are on non-shaft mounted systems and the small mention of it is...put the check tool in and screw in adjuster then measure length.

Be gentle Im new at this. 

[Chryco Psycho]

hyd is tougher to measure , you want to be at least one turn of preload so if you did one thread showing on the rocker & did zero lash you would have the correct length

[Bluemonster71RT]

hyd is tougher to measure , you want to be at least one turn of preload so if you did one thread showing on the rocker & did zero lash you would have the correct length

Ok I am mostly sure that is where I am at. What is the final saftey check to do before ordering a set?  Like a sure way to know that I didn't measure wrong or do something incorrectly. Double check, triple check?  Turn the motor with the the checker on every rocker and look for binds or looseness?

Thanks for the time and hlep also.

[Chryco Psycho]

I would check on 2-3 different valves but the adjuster shouldl allow for varience

[Bluemonster71RT]

I belive I have my length by:  turning the adjuster on the rocker to 0 threads. Then putting the checker tool in and turning till 0 lash. Then 1 full turn of the adjuster for preload of the lifter. That should be my length correct?

But If I go by this From BUDDY while also starting at above steps:
"then adjust the rocker arm to - o -lash or pre- load if its a hyd lifter. then roll the eng. over a few times then,  remove the rocker and  look at the stem. if it is rubbed off closer to the top [intake side] you need to adjust longer. if it is rubbed off to the lower side then shorter push rod is needed.  the rocker tip contact point should be just up [twoards intake side of eng] from center when on the heal of the cam lobe and roll just past center @max lift. once you get the length just order a set that size"

I end up with the mark just after center. Which would mean that the rod is to long.  But this may also be because the lifter completely depresses because it has no oil in it.  It is a fresh build all around. So if the lifters are pumped up with oil will this not make the rod length even longer? Or does the lifter still completely depress even when running so I should back orr a half turn and be good?   

[Chryco Psycho]

I would have the rocker arm adjuster out 1 full turn at zero lash then add one more turn for preload , fi you put a straight edge across the valves & one is longer / taller use that one to get the measurement

[HP_Cuda]

I have the 1.6 harland sharp roller rockers and I had my pushrods custom made. Takes about a week.

This guy does top notch work and now I wonder where I put his info.

[Bluemonster71RT]

I wanted to oredr from comp cams but they don't make custom length with ball and cup so I called  Smith Bros and did happen to talk to Pierre. They are on the way. Ended up being 8.050 using the check tool. Hope that it's right.

[Chryco Psycho]

Comp has generic sizes but rarely the length that works for Mopars
 Smith Bros is good to deal with as is Pierre .
 I hope you have the right measurement too 

[ek3]

comp cams sells an adjustable pushrod tool.  you can use a sharpie [ink pen] to color the valve stem ,then adjust the rocker arm to - o -lash or pre- load if its a hyd lifter. then roll the eng. over a few times then,  remove the rocker and  look at the stem. if it is rubbed off closer to the top [intake side] you need to adjust longer. if it is rubbed off to the lower side then shorter push rod is needed.  the rocker tip contact point should be just up [twoards intake side of eng] from center when on the heal of the cam lobe and roll just past center @max lift. once you get the length just order a set that size ! ....  incorrect push rod length will screw up your valve guides among other problems ..

sorry, i have been real busy .. to be very clear i should have said 0 lash for solid lifters, or '' preload '' [meaning 1 turn ] for hyd. you will be measuring the length where the pushrod will operate this way. i would keep 1 thread on the stud also. there is room for tolerance with respect to pushrod length ,you can check with the tool and if it is staying '' centered '' you are good...  good advice to straight edge the stems you can fix that also if you want to get real detailed with it.  looks like you have it now, good luck.