[chewyman1]

I'm sure this has been covered a million times on here, but I can't seem to find a straight answer, so i thought I'd post my own direct to the point question. This is my first 454 build & I need to know how to run my valves. I have a hydraulic cam & 1.7 crane roller rockers. What is the procedure I need to do to get them all adjusted so I can fire the engine up soon.
Thanks, Matt

 

[Smittie]

http://www.chevelles.com/techref/ftecref17.html

 

[Schurkey]

Yeah, I like the first procedure listed above--but--DO IT WITH THE INTAKE MANIFOLD OFF the engine. You will be able to SEE the preload on the lifters--the plunger will be some distance below the snap ring/circlip on the lifter.

 

[chewyman1]

ok, thanks guys, i'll give it a shot

 

[ricks_67]

Thanks for posting the info. I will have a hyd roller install in the near future.

 

[D Stroud]

Yeah, I like the first procedure listed above--but--DO IT WITH THE INTAKE MANIFOLD OFF the engine. You will be able to SEE the preload on the lifters--the plunger will be some distance below the snap ring/circlip on the lifter.

Thats the way I do it, with the intake off.

 

[chewyman1]

Got them done this evening, and they all feel good & appear to work correctly when I rotate the motor manually.
Thanks again guys.

 

[69-CHVL]

If you really want to make life easy for yourself, get a set of polylocks - the best thing ever invested to help find zero-lash. Just run them down with your finger to take-up any slack and walla - zero-lash! Little more tricky IMO with the crimped nuts.

 

[chewyman1]

The ones I used had a nut that you take down then has a screw down plug in the middle that uses an allen wrench. Are these good nuts to use, will I be constantly adjusting them,or will these hold good & tight?

 

[Schurkey]

The ones I used had a nut that you take down then has a screw down plug in the middle that uses an allen wrench. Are these good nuts to use, will I be constantly adjusting them,or will these hold good & tight?

They're perfect. Tighten 'em with your fingers. You'll feel the lash "disappear"--although you could still tighten the nuts farther; you'll feel when you begin compressing the spring in the lifter.

With the set screw on the top PROPERLY tightened--you won't have any worries about them getting out of adjustment from being loose.

 

[chewyman1]

That's what I was hoping to hear, thanks everyone, that's why I lurk so much here, so much valuable information & a great community. This puts my 67 one step closer to being back on the road.