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Generation V Internal Engine 2013-20xx LT1

Speedmaster procomp shaft mounted rockers

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Old 07-25-2018, 04:37 AM
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Default Speedmaster procomp shaft mounted rockers


Retaining circlips



Worn roller cages
I have just pull a set of PCE261.1246 Speedmaster procomp ls2-3 Shaft Mount 1.7 ratio black Aluminum rocker arm set after one broke less than 2000klm with pac1208 valve springs and 130lb seat pressure.
5 sets of rockers had there needle roller cages worn through the edges exposing the needle rollers and 4 had the rocker retaining circlips wearing into the rockers making metal.
This could have been messy BEWARE!!!!
Last edited by Onsta; 07-25-2018 at 04:55 AM. Reason: Bad photo
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Old 07-25-2018, 06:01 AM
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Ouch....i have installed 2 sets of their 1.9s. But the ones i have are steel. One set has been on my uncles 5.3 for probably atleast 5k miles. I just put a set on my ls6 but haven't ran it yet. I'm using psi1511 springs on it and ls6 springs on his.

the shaft looks identical tho.
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Old 07-25-2018, 07:18 AM
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Can't say I'm surprised. Most Chinese aluminum is porous. Their steel is fine.
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Old 07-25-2018, 08:06 PM
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Originally Posted by JoeNova
Can't say I'm surprised. Most Chinese aluminum is porous. Their steel is fine.
I purchased them from Atracicingworld, advised them of there faulty product and remove them for sale, needless to say they are driven by greed
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Old 07-28-2018, 09:19 PM
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i use the **** out of chinese parts but rocker arms? not even i would risk that one. valvetrain is sacred.
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Old 07-28-2018, 09:25 PM
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Originally Posted by trendsetter
...............….valvetrain is sacred.
word...….
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Old 07-29-2018, 09:16 AM
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Thats so surprising because Procomp is known for great quality...said no one ever.
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Old 07-29-2018, 12:01 PM
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Originally Posted by KCS
Thats so surprising because Procomp is known for great quality...said no one ever.
ROFLMAO!!! So true....
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Old 10-14-2018, 07:54 AM
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Lol tff
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