Setting rocker backlash

[chev4life]

Hey guys..I think this my last question before getting the truck running...can someone walk me through the torquing of the rocker nuts? I followed the Chiltons manual in doing them but wanted to verify. I put the engine at TDC and tightened a handfull of rockers (whatever the book said) tighten just to no lash in the rod and then one full turn. Then turned the crank to one rev (#6 cyl) and did the rest. Does this sound like the right approach? Thanks again for all the help.

 

[mr_clean]

1 full turn past 0 lash seems like a lot. I believe 1/4 turn is sufficient for the standard SBC hydraulic lifters.

Also I believe you will want to rotate the crank in quarter turn increments and adjust the appropriate 2 lifters through two full rotations of the crank.

-Scott

 

[chev4life]

Yeah, I thought 1 turn was too far also, but chiltons says 3/4 to 1 1/4 turns so I did 1. I dont really trust that book much, that is why I am asking.

 

[JEBSR]

1 turn is accurate. I run mine at half a turn, they will rev a little faster. I have seen people run them at 1/4 but it will be easier to float the valves with no more preload than that. But it would still run fine.

 

[ryoken]

I run SB's at 1/2, BB's at a 1/4.....

 

[chev4life]

Is it worth pulling my valve covers...ie ac compressor to readjust to 1/2 turn?

 

[JEBSR]

Not considering your adjusted correctly, No.

 

[lrazer]

that sounds good if you want to be more precise u can adjust them while the motor is running

just loosen a rocker until it starts to tick then tighten till it stops then 1/4 turn past that