need some specs and help
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4wd Low
Joined: Sep 2009
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need some specs and help
<HR style="COLOR: #d1d1e1; BACKGROUND-COLOR: #d1d1e1" SIZE=1><!-- / icon and title --><!-- message -->1979 f700 370ci in, I need the valve face grinding angle, the valve seat grinding angle, and the valve stem height after it is in the head and the valves and seats have been ground. I have to bore so is a certain piston better? I know I asked this already but since I'm overhauling advice on cam kits and timing kits would sure help me.
Thanks Joe
Thanks Joe
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Joined: Jul 2002
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From: Long Island USA
My Motor's shows 45 degrees for the seat, 44 for the face. No other specs that you need, except maybe stem clearances.
2bbl 370: intake stem clearance .0010-.0027", exhaust .0020-.0037"
4bbl 370: intake stem clearance .0010-.0027", exhaust .0016-.0035"
Valve lash: .100-.150" both engines.
2bbl 370: intake stem clearance .0010-.0027", exhaust .0020-.0037"
4bbl 370: intake stem clearance .0010-.0027", exhaust .0016-.0035"
Valve lash: .100-.150" both engines.
Senior User
Joined: Jul 2009
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From: Albany, Oregon
Valve lash is only required on a solid tappet cam: I wasn't aware any 385 series engines came with them with the exception of the old CJ/SCJ motors. Hydraulic lifters require a certain amount of preload. The preload is specified by the lifter manufacturer and is usually in the range of .050 to .075 - which equates to about 1/2 to 3/4 turn on the nuts in the rocker arms. The next dilemma is that Ford used a pedestal style rocker arm configuration which was non adjustable except for the first few years of production (69 -70/71). The way to adjust preload on these is to change the pushrod length.
All of my experience is with standard duty 429's and 460's, but I believe the industrial motors had the same valve train
All of my experience is with standard duty 429's and 460's, but I believe the industrial motors had the same valve train
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