I'm in the middle of resurrecting a 4.3.............had a cracked head
the question:
since the rocker arm covers are going to be HELL to remove once its in the chassis (S-10), what's the best way to set the rocker arms while its on the stand ?
prime the oil system with no pushrods in it, then crank them down to 'snug'
any advice appreciated, I really don't want to fight that #$%^%$#$^ rear heater hose connector once it's installed.........
Regards,
G"Gary Glaenzer" wrote
Must be an older 4.3, as they haven't had adjustable rockers for a while.
I've never had to prime anything when setting small block (style) rocker arms. Just take them to zero lash, and then 3/4 of a turn. You could go 1/4 if you want. 1 turn actually centers the lifter in it's bore. In fact, I think there were some years that called for 1.5 turns after zero, but
3/4 has always worked for me.If you scrounge a manual for it, it should give you the positions that can be adjusted at #1 TDC, and #4 TDC. Much simpler, as you can do half in one pass, and half on the other.
Ian
it's a 93
aren't those adjustable ?
G
It looks to me like a 93 could go either way, Screw in studs are torque to
20 ft lbs but press in studs are adjustable. Is it a vortec? I think they were all screw in. Bob"Gary Glaenzer" wrote
I can't remember what year it changed for the
4.3's....but it should be obvious if you remove one of the nuts and rocker balls. If the stud will allow the ball to move all the way up and down the stud, then it will need to be adjusted, but if it has a shoulder that stops the ball at a certain point, it would be a non-adjustable one.Ian
well, hell
the things you learn here
the machine shop guy said something about 'screw-in studs' when I took the heads in.........so I guess that means non-adjustable, right ?
no, not a Vortec, but the machine shop guy remarked that the heads had screw-in studs
G
I would say so, but like Ian says look for a shoulder on the stud to be 100% certain, but yes... screw in studs should be non adjustable. Bob
G,
Pretty sure the 93's were non adjustable..............
Doc
MotorsForum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.