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Author Topic:   Lifters
nut3d
Member
posted December 22, 2001 07:53 PM
wHAT IS THE DIFFERNCE BETWEEN SOLID LIFTERS AND HYdraulic lifters? and can I use stock rocker arms with a solid lifter?


Gene
Member
posted December 23, 2001 07:54 AM
To over simplify your question, soild lifters are solid pieces of steel, hyd lifters have a disk that holds the push rod clearance at zero via the engie oil. The shape of the cam lobe wont allow the using one lifter style on the other cam lobe style. Using the stock rocker with either cam is possible, but certain cams and valve spring pressure is beyond stock rocker limits.

[This message has been edited by Gene (edited December 23, 2001).]

BK19
Member
posted December 23, 2001 10:03 AM
very well said gene


sdhnc29
Member
posted December 23, 2001 02:16 PM
nut3d ,
Gene is 100% correct in his explanation !!

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Hendren Racing Engines
Rutherfordton , NC
(828)286-0780


nut3d
Member
posted December 23, 2001 02:26 PM
can I use z28 springs with a solid lifter cam and stock rocker arms?


sdhnc29
Member
posted December 23, 2001 04:53 PM
Using the Z-28 springs will rely completely on what cam you have . Valve lift vs. coil bind , seat pressure vs. open pressure , what your cam manufacture recommends , and the ramp design on your lobes . Your Z-28 springs and stock rockers might work well with a mild solid lift cam , that does not have too much lift , and does not require too much spring pressure . In other words , if you have a cam that requires 140-160lbs of seat pressure and 300-350lbs open pressure , as many cams do now , then you will be wise to invest in good valve springs , and a set of rockers . Valve train is not an area to cut corners , so I would recommend doing as your cam manufacturer recommends , as well as what your engine builder recommends .

------------------
Hendren Racing Engines
Rutherfordton , NC
(828)286-0780


nut3d
Member
posted December 23, 2001 04:57 PM
I am building the engine and I'm on a limited budget.


bbracer17
Member
posted December 23, 2001 10:15 PM
I tried using the z-28 springs, but they didn't work for me. They were advertised as good for .550 lift but after I shimmed them to get 120 lbs of seat pressure then they would coil bind at .520 lift. I had a .535 lift cam. Just spend a little extra at first and it will save you some head aches. Crane has some good stock diameter springs that are about $110, and they are worth it.


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