ok, wtf........i neeeeeeed help.....
i have LT4 roller rockers and the poly nut DOES nto have a HEX screw in the middle of it....now can i jsut tighten these all the way down and will ti be fine? or what...i also jsut bought more poly nuts with the HEX screws in them and they are toooo FREAKING big............wtf.....cant i just tighten these things all the way down till they stop turning? i drove it on them last night like that and i had no problem? and arent there 2 diff types of poly nuts?
ranyd

 

Did you read and understand my reply to your other post?

 

ok, i torqed down the bolt that goes into the head...and im guessing i trq down the top nut till it stops? thats what im thinking since it doesnt have the lock in it? the nut was made WITHOUT a nut,,,and the lt4 roller rockers have the lil chevy bowtie on it...and they are silver...

 

I cant explain it much better than I did in the other post..
IF you have 'real' LT4 studs[7/16" with a SHOULDER on the stud, just below the threads, like in the pic in the link i posted in that other thread..] then yes, you tighten them down...
IF you do NOT have the shouldered studs [reg LT1 studs, etc] then you have to ADJUST the valves and lock the nuts...
[I suspect that you have the shouldered studs, that's why I posted that]
Are the heads LT1 heads? or REAL LT4 heads?
Did you change the studs?
Are the studs/RR's 3/8 or 7/16?
better yet can you take a pic of the studs you have?
Charlie

 

charlie, can i call you you PLEASe???????
let me know ASAP

thanks
randy

 

PM me ur # but be aware i have to leave for work at 815 ish

the key is if the studs are LT4 studs[SHOULDERED ] you tighten the nut down...
all others you adjust with nuts and locks..

 

i fixed it...i had the LT4 STUDS which are suppose to be torqued down, instead of the poly lock nut...thanks for the help n e ways..
randy

 

HERE's a pic of the difference[LT1/'real' LT4]
http://www.hashmarks.com/techtips/va...eft_vs_Old.jpg
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The 1.6:1 roller fulcrum, roller-tipped rocker arms are a
modified version of Crane's design. By using these extruded
aluminum rocker arms, the engine effectively increases the
lift with the added advantage of less engine friction and a
smoother idle than the LT1.
The rocker arms sit on special shouldered 10mm studs, and are tightened down until they bottom out. This design eliminates the need for any kind of adjustment.
*************
The LT4 roller rockers are self-aligning (i.e. they have guides
to keep the rocker arm tip on the valve) but they are non-adjustable (i.e. torque 'em and go versus setting 0 lash + ¼ or ½ turn depending on preference).
In addition, the LT4 rocker arm studs are 10mm as opposed to the more common 3/8" or 7/16".
*************
GM part numbers for the studs:
12550011 lt4 stud ['real' LT4 stud]
12552126 lt1 stud
*************
of interest:
http://www.grandsportregistry.com/te...rarmrecall.htm
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Best I could find for you on the torque value is 18 ft lb [sounds to low to me though..]