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Cam Question?

Discussion in 'Engine Building' started by 12secondCRX, Jul 30, 2003.

  1. 12secondCRX

    12secondCRX Senior Member

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    When you first install cams and the rest of the valvetrain how long do you need to let it break in before you really get on it? I was told to wait for about 1000-1500 miles.
     
  2. SleEPeR_CRX

    SleEPeR_CRX Senior Member

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    yes good question, im looking for crower 403's with springs and retainers and i am wondering the same thing.
     
  3. B16

    B16 Super Moderator VIP

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    cams dont need to be broken in.
     
  4. pills_PMD

    pills_PMD Super Moderator

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    neither do valve springs / retainers... let those bitches spin@!!!
     
  5. 12secondCRX

    12secondCRX Senior Member

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    Thanks for the help!!
     
  6. SleEPeR_CRX

    SleEPeR_CRX Senior Member

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    1 more question to do with this thread, if i get crower 403's with titanium valve springs and retainers, what COULD i rev it up to? is the block able to hold 8000 shifts? or should i keep it at 7200? ( right now i shift when racing at 7000)? any1 know?
     
  7. pissedoffsol

    pissedoffsol RETIRED

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    shift where you stop making power.
     
  8. SleEPeR_CRX

    SleEPeR_CRX Senior Member

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    if i get crower 403's ill stop maknig power around 7700, can the LS block with titanium springs and retainer hold that?
     
  9. liquid00meth

    liquid00meth Senior Member

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    you'll probably end up with a spun rod doing that. The ls bottom end doesn't have the most desirable r/s ratio to be revving to 7700.
     
  10. B16

    B16 Super Moderator VIP

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    i wouldn't say that. get some ARP rod bolts then you should be ok. r/s ratio doesn't have that much to do with it.
     
  11. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    Rod/stroke ratio really doesn't have much to do with the integrity of the B18A/B bottom end compared to the B18C.
     
  12. liquid00meth

    liquid00meth Senior Member

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    oh. I thought someone had said the different r/s ratio wasn't as desirable for high revs. Didn't really know why.
     
  13. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    Don't worry, I have an article about that coming up too. Side loading is less than 3% greater with 1.54 rod/stroke than it is with the 1.58 of the GSR engine. It's not significant.
     
  14. sloazcrx

    sloazcrx Senior Member

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    How far can you safely rev the ls motor if you have Eagle H-beam rods and bolts.
     
  15. SleEPeR_CRX

    SleEPeR_CRX Senior Member

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    id say 7200-7300 is the tops u can push a LS. i rev my stock LS to 7000 when racing, and will up that to 7200 once i get Crower 403's with titanium springs and retainers. u wont make any power after 7200 without cams, and u cant rev an LS over 7400 before it gets iffy on the block/head holding.
     
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