Valve adjustment firing order on a SBC 283?

Question

Ok so I have a 1966 283 Small block Chevy the valve's are tighter than others and loose them some ya know. So i done some research and found a few different ways to adjust them. Also i do not know the size of the cam. I do know that i have hydraulic cam and lifters. So what would be the width between the rocker and valve stem? Should i measure them when cold then measure when at at operating temperature? then kinda go in between the two thousandths I know the intake is 0.002 thousandths smaller in width then the exhaust which makes the exhaust a larger width. because the exhaust gets hotter which make it expand. here is what i have found to be a pretty reasonable firing order to do valve lash adjustments.

with #1 cylinder Intake Valve at full valve lift .... Adjust #6 Intake Valve
with #8 cylinder Intake Valve at full valve lift .... Adjust #5 Intake Valve
with #4 cylinder Intake Valve at full valve lift .... Adjust #7 Intake Valve
with #3 cylinder Intake Valve at full valve lift .... Adjust #2 Intake Valve
with #6 cylinder Intake Valve at full valve lift .... Adjust #1 Intake Valve
with #5 cylinder Intake Valve at full valve lift .... Adjust #8 Intake Valve
with #7 cylinder Intake Valve at full valve lift .... Adjust #4 Intake Valve
with #2 cylinder Intake Valve at full valve lift .... Adjust #3 Intake Valve

THEN:

with #1 cylinder Exhaust Valve at full valve lift .... Adjust #6 Exhaust Valve
with #8 cylinder Exhaust Valve at full valve lift .... Adjust #5 Exhaust Valve
with #4 cylinder Exhaust Valve at full valve lift .... Adjust #7 Exhaust Valve
with #3 cylinder Exhaust Valve at full valve lift .... Adjust #2 Exhaust Valve
with #6 cylinder Exhaust Valve at full valve lift .... Adjust #1 Exhaust Valve
with #5 cylinder Exhaust Valve at full valve lift .... Adjust #8 Exhaust Valve
with #7 cylinder Exhaust Valve at full valve lift .... Adjust #4 Exhaust Valve
with #2 cylinder Exhaust Valve at full valve lift .... Adjust #3 Exhaust Valve

Would this be correct?? and what is a reasonable thousands for the intake and exhaust valves for a hydraulic cam? i have solid rockers. they are not rollers.

Answer 1

You can buy oil spash clips (8 pcs) that hook onto the rocker arms. Then with engine running set the valve lash one side of the engine at a time. Loosen rocker nut until it "just clatters", tighten 3/4 of a turn. Move on to next rocker.



When done, remove splash clips, install valve cover, remove other valve cover, install clips, start engine, adjust other 8 rockers. Its fast and fool proof.

Answer 2

Well, with a hydraulic cam you can get by adjusting it running. You just loosen it until it starts chattering and then tighen til it stops and go 1/2 turn more. It is kinda messy though. So maybe have some towles down. What I did is take an old valve cover and cut the top out so I could use it to keep oil from making a mess.

Answer 3

283 Firing Order

Answer 4

Adjust them until the pushrod has zero vertical clearance, but NOT because it has mashed the plunger all the way down in the lifter. Simply tug up and down on the pushrod while you cinch the nut. Once it is running, you can adjust them at idle. Set them 1/4 turn past zero lash.



You need to check rocker arm geometry first. Most of them are out in left field.



Use Viton seals on your valve stems.



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Answer 5

You sure it's a 66 283? Hydraulic valves in that motor are not adjustable

Answer 6

DUDE! Hydraulic is self adjusting once you get past zero! Set them with piston up on compression stroke per cylinder to zero if primed and tighten one round down! Only solid cams need to be gauged! Rockers don't mater! Be sure all are oiling before replacing the covers to be safe! Pour oil on rockers to keep them from starving! Prime oil pump up to the filter before installing filter! A full filter can air lock the priming process! 18436572 No. one is on the left as are all odd number cylinders and evens on the right! Align dist. on compression stroke on no. one!