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do i need retainers?

Discussion in 'Engine Building' started by erebunicrx, Aug 9, 2004.

  1. erebunicrx

    erebunicrx my name is Dale

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    if i upgrade my cams do i need to buy retainers too? this will be 404's in a ls.
     
  2. pissedoffsol

    pissedoffsol RETIRED

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    most definitly. 402's require an upgrade.
     
  3. erebunicrx

    erebunicrx my name is Dale

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    i meant can i just use dual springs and use the stock retainers?
     
  4. integraslut78

    integraslut78 Stylus DJ Extraordinaire

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    I have the 403's for my LS and I just went with the springs and retainers combo set, let me put it to you this way BETTER SAFE THAN SORRY.
     
  5. erebunicrx

    erebunicrx my name is Dale

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    just bought the set. do you like the 403's or would you like the 404's.
     
  6. pissedoffsol

    pissedoffsol RETIRED

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    i hope you are upping the compression. the stock ls compression will never utilize those 404's potential.

    get some JDM p30 pistons if you can.
     
  7. MikeBergy

    MikeBergy Blah blah blah....

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    The only thing you gain from ti retainers is the light weight. They do not need to be replaced, but are good insurance. depending on the spring rates you are using, you should be just fine. And like b said, you'll need to up the CR with some pr3 pistons or something, beacause stock compression on an ls is like 9.6 to 1.
     
  8. erebunicrx

    erebunicrx my name is Dale

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    untill winter could i just mill the head to get the comp that i need? i just sold my p30's thinking i was going to go turbo.
     
  9. integraslut78

    integraslut78 Stylus DJ Extraordinaire

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    I have not installed them yet so I am not sure I should be getting them installed within a month.

    B - Do I need to up my compression to see performance from my Crower 403's they are a stage 2 cam but I am sure you knew that.
     
  10. erebunicrx

    erebunicrx my name is Dale

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    i know you need to up the comp. bill used the p30's in the allmotor monster article.
     
  11. cycloneb18c3

    cycloneb18c3 Senior Member

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    get the head ported and polished. LS heads flow like a turd.
     
  12. pissedoffsol

    pissedoffsol RETIRED

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    milling sucks. once you do it, you're done.

    jdm p30s with a 404 and a milled head have a very good chance of hitting the valves on the piston tops.

    more so, the .2 points that millign will give you isn't shit. 9.6-9.8 is still no where near 11:1.
     
  13. pissedoffsol

    pissedoffsol RETIRED

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    i would... but again, nothing is necessary... you just won't see the full potential.

    cams and compression need to be matched perfect to get the best results.
     
  14. integraslut78

    integraslut78 Stylus DJ Extraordinaire

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