valvetrain noise after cam swap

[kj ranger]

installed all new valvetrain from delta cam, lifters, pushrods , rockershaft assy. also installed a delta cam for more torque. now have a tick / rattle and from rockers . I was told i don't need longer pushrods for this cam . ANY idea's?????

 

[Joshs93four-oh]

You didnt mention anything about valve springs. Could it be the retainers touching the tops of the guides? I dont know how much more lift the new camshaft has. Is it making the noise on both heads? Did you break the cam in correctly? I dont know anything about Delta but do you know if they ground the cam from a brand new billet? I know that some cam companies regrind used cams...they take material off of the base circle to effect more lift and possibly there is too much clearence in the pushrods. I am not sure but maybe this would be applicable to solid lifter engines only. I have heard stories of people installing new valvetrains on 4.0's and they ticked for quite a while until the oil made it up top. Hope you can get it figured out and by the way, if you were brave enough to drive it with it making noise did it make a noticeable performance difference? Josh
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MARIJUANA DISPENSARIES

 

[Mutant Pony]

Is it a flat tappet or roller?

 

[kj ranger]

the only consern that i see is the pushrods are to short . I purchased a adjustable pushrod from smith brothers and checked lifter plunger travel. the numbers that i came up with should have been within the .020-.060 travel but i have a different pushrod length at zero lash from intake to exhaust. the cam is a regrind from a stock 4.0 with a stated 450 lift and a 203 duration @.050 . this has been a longer than needed problem .the heads are new castings from alabama cylinder head. I could just take a chance and order .030 longer push rods and hope for the best . I was hoping that there was someone else that may have had this problem.

 

[kj ranger]

the 4.0 ohv is a hyd. roller there is no real break in like a flat tappet.

 

[Joshs93four-oh]

sounds like this may be the most likely culprit that being said. I dont know if this is possible but could you order slightly shallower rocker arm pushrod sockets to remedy this? Josh
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Ford verona history

 

[Bird]

the only consern that i see is the pushrods are to short . I purchased a adjustable pushrod from smith brothers and checked lifter plunger travel. the numbers that i came up with should have been within the .020-.060 travel but i have a different pushrod length at zero lash from intake to exhaust. the cam is a regrind from a stock 4.0 with a stated 450 lift and a 203 duration @.050 . this has been a longer than needed problem .the heads are new castings from alabama cylinder head. I could just take a chance and order .030 longer push rods and hope for the best . I was hoping that there was someone else that may have had this problem.

Back when I was ordering the Alabama Cylinder heads and porting/polishing them, found out that they were .020" taller than the stockers - thicker decks for more stability, but would result in pushrods being to short - especially with aftermarket / reground camshafts.

Bird

 

[jds3403]

whats up man. i live in cary nc so not to far from zebulon. i to have a 4.0 and jsut recently used the same exact cam you have and changed the lifters and rockers. i ported the heads and lower intake while they were off and that was the extent of what i did and i to have a knock after the change. doesn't seem to affect it. i can now run to about 5k and it still seems to have some steam left what about yours? how does your truck run? did you get brand new lifters ? i got my from mixpah machine up north for a set of 12 @ 120$. i was a little disheartened when i threw the mike on the lobes to find out that they were smaller than the stocker it was replacing. but i understand why they did it. look at the size of the cam journals almost as big as the lobes them selves so the only way to get any additional lift out of is to grind down the lobes to smaller than what they originally were and then add metal back and take out the slack in the length of the pushrod and the cup they put into the reman. rockers. fords valvetrains are really weird. if your heads are .020 bigger than i would imag. that that would make a diff because the lifters are designed to have a preload on them but i can't remember how much.
I didn;t really notice a whole hell of alot what about you?

 

[jds3403]

by the way even after the change, still sounds like marbles in the oil pan ford pos