acquired an engine with hyd lifters but solid pushrods & mechanical type rocker arms. has a '79-80 # cyl head & block deck # 9225R 11 7 E. Help me out here, how do the lifters get oil ? Has a decent cam, Lunati 268 & 060 over bore, headers & 4B intake. # 4 intake had stripped rocker adj screw & somebody put a solid lifter & a bigger screw in adjuster. Ordered new lifter & gskts but can't figuire how they were getting oil, don't they oil thru rocker arms & hollow push rods ?

Hollow push rods

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The only oil they'd be getting, unless somebody did some really nifty machine work to the block, and installed a different style lifter, is drain-back oil. Hydraulic lifters would not pump up with solid push-rods.
If they are pumping up, you'll have to do some exploring to see what was done.

CJ

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Part of Tyrde-Browne Racing

Are you sure the lifters are hydro?I have seen lifters that look like hydro but are solid.Guzzi Mark

lifters are hydro type. Is it possible to screw the adj down & run collapsed lifters ? There was no rocker arm to valve stem clearence, do the hydro cams not have a clearence area built into their profile ? This is a Lunati # HI 268-268 & 484, engine sounded pretty sharp except for occasional clatter from # 4 cyl. This cam is close to the MOPAR 270 & 490 I've had success with. Could I salvage this engine by useing hydro rocker arms & pushrods ? Don't know which way to go with this one. Thanks for your responce

The most important thing to check on the current set-up are the valve stem heights.
Any hydraulic lifter set-up, using non-adjustable rocker arms, needs all the valves / valve stems set to the same height so remove the rocker-arm assembly, put a straight edge across the valve stem tips and inspect / measure any gaps you see. (use feeler gauges to measure the ones not touching the straight edge)

If the head was set-up correctly, to support the use of hydraulic lifters and non-adjustable rocker arms, then install that system and go.

If the valve stem heights are not even, change over to the solid lifter set-up.
DD