"L" rocker arms
 

were these assembly line rocker arms used on L88 #074 aluminum heads? Were they also on #990 steel heads??
Thanks!!
Ted

I think they were used on all solid lifter big block engines.

No, 074 heads engines and LS7(990 heads) used H rockers arms in my experience.

Jason

Other than the letter "H" or "L" on the rockers arms, were these virtually the same
part? What heads numerically i.e. last 3 digits used the "H" arms?
Thanks guys!!
Ted

I haven't seen any H rockers on production line engines. All that I have seen were L rockers. I've seen over the counter engines with the H rockers. This is just from my limited experience with these.

I have this L88 with 074 heads it has L rockers. I think all 69 assy line motors came with L rockers