Thread: torque specs

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This is my first time here and I need a little help. I'm assmebling
a 350 and got most of the torque specs from a chevy manual at the library, however I forgot to right down the spec for the rocker
arm nut. Anybody know it or a web page that has listings for torques? Thanks

Most SBC don't use torque specs for rocker arm nuts. You will have valve lash or just adjust to the point where the rocker arm stops making noise as is cycles. Thing to do is look at a manual for your year engine, then check how to set valves. My friend just sets them to contact the valve stem at the right setting on the crankshaft (both valves fully closed for the cylinder in question), then backs them off a tiny bit when cold. He warms the engine up, loosens them one at a time until they tick, then tightens them to where they just stop. But a look at the book for your engine would be best.

Unless you're using an aftermarket cam, in which case, you'll want to check the valve lash the cam maker calls for.

Hope this helps.

Hi Guys! I would like to thank Tim and Denny for getting back to me so quickly. The info Tim gave me almost immediately, got me searching the web for the "valve lash" and I found a site that had chevy info. It said, if I understood it, that for the 5.7L there should be a zero/zero lash. That site and some others really helped me out. I would like to answer Dennys questions and maybe get additional info from him. The engine is a stock 350 from a 1995 chevy van. The VIN code on my suburban, the vehicale its going into, and the van, where it came from, are "K" engine codes. Thanks again.



P.S. I bought a 350 out of 1974 vett before I figured
out it wouldn't work in my car, long story. Anyhow
if any one out there is looking for one let me know.
Its clean, no intake, about 59,000 miles or so I
was told. I would like to get $400 for it. Ken

Hydraulic lifters have zero lash because the hydraulic plunger in the lifter takes up all the slack.

There are many threads on this site for setting valve lash. Try a search.

Here's an article.

http://www.chevyhiperformance.com/te...148_0303_valve