Greetings everyone....newbie to this site....has anyone done, or know if you can swap the 1.8 LS7 rocker arms in place of the 1.7's in the LS3? And if you can, do you need to swap the p/r's and springs also?....
All the GM parts sites that I have seen list the LS7 rocker arms for the 6.0, 7.0, and 6.2.

Thanks in Advance!

 

Don't know where your looking but no the intake rocker arms are different. Exhaust are the same though.

 

I know, the intakes on the LS3 are offset by .246" http://www.camarohomepage.com/ls3/page4.htm as per/this link, does the LS7 rocker have the same .246" offset?, and can it be intalled on the L92 heads?

 

Noooo

 

nope. the heads are different to the point that it cannot be done.

 

Ok, thanks guys!....this forum seem to have alot more "factual" information than others....

 

the distance from the rocker bolt to the center of the valve tip is almost 1/4 futher on a ls7 head. I had a ls7 rocker in the shop I compaired it to a LS1

Tim

 

Tim, the OP was asking about LS-7 vs LS-3, but they are still different offsets...

 

It dosn't change that the ls7 rocker on the exh would overhang the valve tip by almost 1/4"

Tim

 

ls7 rockers are 1.8 ratio lsx are 1.7