Solid lifters and Roller Rocker valve adjustment

[denver98]

I just replaced the manifold gasket on my 440 and when I had the pushrods exposed...I noticed that a LOT had considerable play in them.  What is the correct lash for the valves? Are intake and exhaust different?  The cam is .525 list with 294 duration.  I have the 90 degree adjustment chart...just need the proper settings.  Thanks.

[cdr]

gonna need the cam part #,,but .024 in .026 ex would be a good starting point if you dont know whos cam it is

[denver98]

Bought the cam as a kid over 20 years ago....I think its and Comp cam.  but not sure.

[firefighter3931]

You would be safe with .020 lash as a starting point with just about any solid flat tappet, inmo 


Ron

[Kern Dog]

I've been told that setting lash too tight is far worse than setting it too loose. If the lash is tight, the valves simply don't fully seat. Too loose? There will be slack in the valvetrain possibly leading to bent pushrods, early lifter and/or cam lobe wear and rocker arm failure.
I adjusted my lash cold. On aluminum heads, you add .006 to the "hot" number because the heads expand/grow as the engine warms up to operating temperature.