tractor hauler need info

ericlb · Sep 21, 2011

working on '83 chevy 350, replacing head gaskets, i know how to adjust the valves once running but i need to know the procedure for initial set up for them, in other words how do i set the pushrods and rockers for initial start up?

Bob · Sep 21, 2011

You do NOT need to adjust them running. Use the two-position method to set half of them @ #1 TDC, then rotate crankshaft 1 turn and set the other half. While twirling each pushrod with your finger, tighten up the lash and you will feel the zero lash position, the go 3/4 to one turn more. (Personal choice.)

@ #1 TDC, set Intake valves 1,2,5,7 & exhaust valves 1,3,4,8.

Then, rotate engine 360º (one crankshaft turn) and adjust:

Intake valves 3,4,6,8 and exhaust
valves 2,5,6,7.

Done!! (IF I typed all the numbers right!)

Jg20601 · Sep 21, 2011

What I remember is I would take the slack out - would still be able to turn (spin) the pushrod with 2 fingers. Some will be on the cam lobe, so you need to turn the engine for them.

Hopefully others will correct or agree with me...or have a better method

Jg20601 · Sep 21, 2011

Thanks to Bob, a better explanation..

oldtanker · Sep 21, 2011

Bob is right, you don't have to adjust em while running....but you can. Tighten em down by the method Bob stated then start it up. Order don't matter when it's running....loosen up one at a time till it's making noise, tighten until no noise and then one turn and repeat on each one.

Rick

Bob · Sep 21, 2011

"but you can"

(IF you like spraying hot oil and SMOKE, that is!)

Once a guy gets the fell for using the two-position method, it's a "no-brainer".

ericlb · Sep 22, 2011

thanks guys, this is what i needed, its been 25 years since i was into a sb chevy and i couldnt remember the procedure, i bought a "overhaul manuel" which like most of them is missing some of the key info that i bought the manuel for lol

oldtanker · Sep 22, 2011

(quoted from post at 21:33:28 09/21/11) "but you can"

(IF you like spraying hot oil and SMOKE, that is!)

Once a guy gets the fell for using the two-position method, it's a "no-brainer".

Bob thats very true. I use to have a set of valve covers with a slot cut along the top to keep the mess at a minumum.

Rick

tractor hauler need info

ericlb

Well-known Member

Bob

Well-known Member

Jg20601

Member

Jg20601

Member

oldtanker

Well-known Member

Bob

Well-known Member

ericlb

Well-known Member

oldtanker

Well-known Member

Similar threads