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Stock Rockers

This is a discussion on Stock Rockers within the Internal Engine forums, part of the LSx Technical Help Section category; I am getting ready to install a new Cam in my TA. I went with the TSP 228/228 .588/.588 112 ...

  1. #1
    JMAC Racing WS6ICK's Avatar
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    2000 Trans Am WS6 LS6
    2006 GTO LS2

    Stock Rockers

    I am getting ready to install a new Cam in my TA. I went with the TSP 228/228 .588/.588 112 LSA. Yes I am replacing the the Springs and Pushrods too. My question is if I should use the stock rockers or purchase a new set? The car has 48,000 miles on it. If I purchase a new set of rockers, Should I just buy a new set of Stockers or go with a better set? Which ones are better?

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    Slow'er'Ass Mr. Luos's Avatar
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    Red Tint Jewelcoat
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    I am running the stock rockers on my 402 with a 248/254 629/622.
    As long as you don't spin the hell outta it, the stockers should be fine.

    Only thing to watch for is one losing its bearings.

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    You have several options. One would be to re-install them as they are, but as stated losing the rollers is always a question. You could send them out for the bearing upgrade that Harland Sharp does or replace with new ones. There are also some excellent aftermarket rockers out there, but obviously more money. I have also seen full sets of rockers with very little mileage on them for sale.

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    member since may 2000 nhraformula's Avatar
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    i kept my stockers. as a matter of fact, they are guys running 9s with the stock rockers.
    2000 nhra edition formula
    a few bolt ons, 379 rwhp
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  5. #5
    JMAC Racing WS6ICK's Avatar
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    2000 Trans Am WS6 LS6
    2006 GTO LS2

    Rockers

    Are Harland Sharp 1.7:1 rockers any good?

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    They had some problems a couple of years ago, they were wearing on the aluminum and not the roller. I assume it has been corrected. I went with the Cranes to get the faster valve acceleration over stock. I also found they have a narrower wipe pattern than stock.

  7. #7
    Senior Member Redphoenix1998's Avatar
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    Harland Sharp is the devil!!!!! Sorry, bad experience, cost me a new bottom end

  8. #8
    JMAC Racing WS6ICK's Avatar
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    2000 Trans Am WS6 LS6
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    Quote Originally Posted by vettenuts View Post
    They had some problems a couple of years ago, they were wearing on the aluminum and not the roller. I assume it has been corrected. I went with the Cranes to get the faster valve acceleration over stock. I also found they have a narrower wipe pattern than stock.
    What are the part numbers for crane and comp cams rockers that fit my LS6 heads?
    Last edited by mrr23; 09-25-2006 at 05:33 AM.

  9. #9
    Member Sunset T/A's Avatar
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    Are Yella Terra's any good?

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    JMAC Racing WS6ICK's Avatar
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    2000 Trans Am WS6 LS6
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    So I will be fine if I bought brand new stockers and installed them? Are the stock pushrods 3/8 or 5/16?

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    Stock pushrods are 5/16".

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    Senior Member mrr23's Avatar
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    Quote Originally Posted by 2000taws6 View Post
    Quote Originally Posted by vettenuts View Post
    They had some problems a couple of years ago, they were wearing on the aluminum and not the roller. I assume it has been corrected. I went with the Cranes to get the faster valve acceleration over stock. I also found they have a narrower wipe pattern than stock.
    What are the part numbers for crane and comp cams rockers that fit my LS6 heads?
    the crane rockers require a shorter pushrod than stock. you'll have to get the entire kit. it comes with rockers, chromemoly pushrods, screw in studs, guideplates, and polylocks. retail goes for about $659.00

  13. #13
    JMAC Racing WS6ICK's Avatar
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    2000 Trans Am WS6 LS6
    2006 GTO LS2

    I also have a set of comp cams 875-16. Will these work or do I need to just buy a new set of stock GM roller lifters?

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    Quote Originally Posted by 2000taws6 View Post
    I also have a set of comp cams 875-16. Will these work or do I need to just buy a new set of stock GM roller lifters?
    Heheh... just discussing these in another thread. They will work if you have the proper preload for them. IIRC .008 -.010 for the Comp R lifters. Check your PR length for the preload if you go with the stock rockers. Also I know Redphoenix1998 has had issues with HS in the past but they do a useful needle bearing upgrade to the stockers...
    Last edited by Azrael; 09-25-2006 at 06:12 PM. Reason: Misidentification...

  15. #15
    Senior Member mrr23's Avatar
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    Quote Originally Posted by Azrael View Post
    Also I know mrr23 has had issues with HS in the past but they do a useful needle bearing upgrade to the stockers...

    i have??? and you 'know' this for sure? seeing as i've never used Harland Sharp rockers, you must be thinking of another mrr23. the only aftermarket rockers i have used in my LS1 motors are the vinci/crane accelerated lift rockers.

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    Quote Originally Posted by mrr23 View Post
    i have??? and you 'know' this for sure? seeing as i've never used Harland Sharp rockers, you must be thinking of another mrr23. the only aftermarket rockers i have used in my LS1 motors are the vinci/crane accelerated lift rockers.

    Sorry I saw the red above... My mistake. It is RedPhoenix that had problems with the Harland Sharps... doh!

  17. #17
    JMAC Racing WS6ICK's Avatar
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    2000 Trans Am WS6 LS6
    2006 GTO LS2

    OK, Thanks to all who replied. I am gonna go with the stock rockers and lifters with the TSP 228/228 .588/.588 112 LSA. I am gonna go ahead and install brand new ones though since I will be in the engine. I will be sure to put the comp 918 springs in and the hardened pushrods that come with the cam kit. If anyone sees any issues with the install please let me know, I am still waiting on the cam kit to come in.
    Last edited by WS6ICK; 09-26-2006 at 02:36 AM.

  18. #18
    Member z28misfit's Avatar
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    I still have the stock rockers on my car as well running the g5x4 cam. LG told me that they were the best ones to use. I guess it had something to do with the lobe profile on the cam. I hear that Jesel has good rockers as well. Just something to consider next time if you change your cam.
    99 z28 cam,m6 ,S60 4.56gears,Fast 90/90 full boltons,more mods one day.
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    Nitrous Tuner LS2Tuner's Avatar
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    Quote Originally Posted by sunsetta View Post
    Are Yella Terra's any good?

    For the money we have had VERY good luck with them.......For HIGH RPM they help seeing that they are a "shaft mount" that is MUCH more stable than a stud mount!!!

    MUCH CHEAPER THAN JESSEL OR T&D!!GOOD BUY FOR THE MONEY. yup:
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