I just put together the bottom end of my engine and is now ready for the heads to go on. When the time comes to adjust them how would i go about adjusting them the correct way. Is there a certain way to do this? Please share your knowledge. If it matters they are camel hump heads and i am running a hydrolic cam and lifters.How do i adjust the heads after being installed on a freshly rebuilt 350?Not to dog anyone but that one ASE cert tech needs to re take his test, and read up on chevy engines.. You DO NOT adjust the valve lash on a chevy v8 like he said.. You do not torque the adjuster nut.. If you do, you will get the valves way too tight and bend or break a valve or pushrod.
Theres alot of right way to adjust valves on a SBC v8 (he's aint one of them)
Here's the way I do all of mine. (this way will be easier for you to do before you put the intake on, so you can see the lifters)
Intake Valve Adjustment: ENGINE OFF!
#1 cylinder Intake Valve at full valve lift .... Adjust #6 Intake Valve
#8 cylinder Intake Valve at full valve lift .... Adjust #5 Intake Valve
#4 cylinder Intake Valve at full valve lift .... Adjust #7 Intake Valve
#3 cylinder Intake Valve at full valve lift .... Adjust #2 Intake Valve
#6 cylinder Intake Valve at full valve lift .... Adjust #1 Intake Valve
#5 cylinder Intake Valve at full valve lift .... Adjust #8 Intake Valve
#7 cylinder Intake Valve at full valve lift .... Adjust #4 Intake Valve
#2 cylinder Intake Valve at full valve lift .... Adjust #3 Intake Valve
Exhaust Valve Adjustment: ENGINE OFF!
#1 cylinder Exhaust Valve at full valve lift .... Adjust #6 Exhaust Valve
#8 cylinder Exhaust Valve at full valve lift .... Adjust #5 Exhaust Valve
#4 cylinder Exhaust Valve at full valve lift .... Adjust #7 Exhaust Valve
#3 cylinder Exhaust Valve at full valve lift .... Adjust #2 Exhaust Valve
#6 cylinder Exhaust Valve at full valve lift .... Adjust #1 Exhaust Valve
#5 cylinder Exhaust Valve at full valve lift .... Adjust #8 Exhaust Valve
#7 cylinder Exhaust Valve at full valve lift .... Adjust #4 Exhaust Valve
#2 cylinder Exhaust Valve at full valve lift .... Adjust #3 Exhaust Valve
Ok now how you adjust each one.....
Spin the pushrod with your fingertips as your tighten the rocker nut..
STOP when you feel the slightest resistance on the pushrod.. This is known as 0 lash.
Now you want to add your preload to the lifter.. Not going your engine specs I can't tell you X amount of preload cause it depends on RPM you will be running at.
Then gen amount is 1/4 round to 1/2 round of the adjuster nut.
Depending on use/rpm, etc accepted preload ranges from .003%26quot; to .035%26quot;
a 3/8-24 stud is the most common SBC size sooo.
1 full turn will equal .042%26quot;
1/2 a turn will equal .021%26quot;
1/4 a turn will equal .011%26quot;
1/8 a turn will equal .005%26quot;
Oh yeah.. Just incase you forget..
Driver's side front to rear is cyl #, 1, 3, 5, 7
Pass side front to rear is cyl # 2, 4, 6, 8How do i adjust the heads after being installed on a freshly rebuilt 350?visit www.mygmlink.comHow do i adjust the heads after being installed on a freshly rebuilt 350?are you referring to adjusting the rocker arms? zero lash plus 3/4 to 11/4 turns- make sure valves are closed- you can fine tune with it running- back off rocker nut till valve ticks, then turn in about 1 turn- one valve at a timeHow do i adjust the heads after being installed on a freshly rebuilt 350?PRELIMINARY VALVE ADJUSTMENT
1. Rotate the crankshaft until the No. 1 piston is at TDC on the compression stroke and the distributor rotor points to the No. 1 spark plug wire cap tower. The timing mark should be aligned with zero on the timing cover.
2. Tighten the adjusting nut until the play just disappears. This can be determined by rotating the push rod while turning the adjusting nut. Adjust both valves, then tighten the adjusting nut an additional 1 turn and tighten the locknut.
3. On V8s, rotate the crankshaft 90, in the normal direction of rotation, to bring the next piston in the firing order to TDC on the compression stroke. Repeat Step 2 until all of the valves are done.
FINAL VALVE ADJUSTMENT
1. Start the engine and re-tighten the rocker arm on any valve that is clattering. Tighten until the noise disappears.
2.Allow the engine to run until the normal operating temperature is reached, then loosen each rocker arm adjusting nut until clattering begins. Re-tighten the nut until the noise disappears. Tighten the nut, very slowly, to 20 ft. lbs.
The purpose of tightening the adjusting nut slowly is to give the lifter time to adjust its height.
btw, I recommend filling the hydraulic lifters before installation. Fill a pan with clean motor oil, then with the lifters submerged in oil, work the plunger back and forth with a push-rod, until air bubbles no longer come out.How do i adjust the heads after being installed on a freshly rebuilt 350?There is nothing to adjust on the heads. You have a sequence to tighten the head bolts. That is generally located in the Chilton repair books. You do a base tighening and then when it has been run for a while (warmed up) you recheck the torque to the right specs.