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I have a hydraulic or solid cam? I just took delivery of my 74 last week. I asked owner to get together all docs on car, especially cam card since he said it had a Crane solid lift in it. I asked him again when I picked up the car and he said "it's in that box". Well, guess what, it wasn't in the box so I'm thinkin a) he doesn't have it or b) he doesn't know what I'm talking bout. I really don't want to tear off the intake just to find this info. There's got to be an easier way.
It may be possible to find out by simply pulling a valve cover and take a look at the lifters. If you can't see enough from there you may need to pull the pushrod and you can possibly pull one of the lifters out with a magnet (if you have a strong one and there isn't much ridge in the lifter bore), then you can tell. Should be able to tell from the valvetrain setup however, if there is a littel freeplay on the closed valves when cold it's probably mechanical, but I'd pull a lifter to be sure.
After blowing a piston up do to adjusting my unknown cam like a hyd only to find it it was solid, I would take the time and pull your timing chain cover so you can get the part number off the front of the cam. This is the only way you will know everything about your cam for future use in planning mods and valve adjustments. PITA but might save lots of heartache later.
Re: >>>>>> How do I find out if...... (71,454,4spd)
Isn't it true if you get around .044 gap on an open valve it is a solid, but if you get less than .0015 gap it is hyraulic?
If you are asking me specifically, I do not know. Unless there is sure fire way to tell without pulling the intake and inspecting the lifters, I would not risk assuming anything. Made that mistake once already. :(
Really don't want to disturb the pan/timing cover seal. I figure if I can find out if it's a solid I will adjust the lash at about .022". How's that sound? Any other ideas?