valve lash hot/cold

gonna run the valves tonight but its snowin and mid 30 so i don't really wanna start it. if i have to i will but perfer not to. it says .010 I and .012 E hot. what should i set them at cold?? whats the adjustment differance about cold to hot?

that lash seems tight.... block and head material are needed for you to get an answer really...

thats what i thought when i put the cam in it last year but thats what the card calls for. sorry bout that did forget to mention that. cast heads.

did it call for 10-12 thou cold ??? Give a call to that cam company and confirm that.. That might be a cold lash setting also.
I cant recall a solid roller cam ever being that tight on lash.. even tight lash cams are in the .018-.020 range.
If that was all aluminum wedge (Maxx Block) and Indy heads, you couldnt even achieve that those settings, if you wanted to. That tight of lash set hot would leave the valves open once it cooled... fact.... They grow about .015.. so it wouldnt even start once it cooled down.
I dont care what the cam card calls for I wouldnt run the tighter than .018-.020

I bet its a cold setting... thats about right for a aluminum head big block with a cast iron block...
it would grow .006-.008 so you would be at the .018-.020 as mentioned.

Drag 'er down to Death Valley. It's 101 there right now. Perfect weather for runnin' valves.

Quote:

---

thats what i thought when i put the cam in it last year but thats what the card calls for. sorry bout that did forget to mention that. cast heads.

---

Different answer for cast iron heads or cast aluminum heads. Also, is it a cast iron block?

My setup is iron block and aluminum heads. I've checked both hot and cold. The "rule of thumb" that hot lash = cold lash + .005" with iron block/aluminum heads works well in my case.