Dedicated to the Promotion and Preservation of American Muscle Cars, Dealer built Supercars and COPO cars. |
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#1
10-31-2018, 01:46 PM
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"L" rocker arms
were these assembly line rocker arms used on L88 #074 aluminum heads? Were they also on #990 steel heads??
Thanks!! Ted 
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#2
10-31-2018, 02:57 PM
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I think they were used on all solid lifter big block engines.
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Freddie 1969 Camaro RS/SS396 (427) 4 speed
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#3
11-01-2018, 04:12 AM
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No, 074 heads engines and LS7(990 heads) used H rockers arms in my experience.
Jason
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#4
11-02-2018, 03:37 PM
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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
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#5
11-02-2018, 03:43 PM
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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.
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Freddie 1969 Camaro RS/SS396 (427) 4 speed
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#6
11-04-2018, 09:38 PM
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I have this L88 with 074 heads it has L rockers. I think all 69 assy line motors came with L rockers
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69 RS SS L78 conv 69 RS SS ZL1 69 L78 Chevelle conv 69 L78 Nova 69 L34 Nova 67 SS Chevelle 73 Trans Am
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