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  • #1

    Forged Internals Needed?

    Ok, I'm picking up a low mileage new 3800 Series II to replace mine, but before I do I'm gonna strengthen it up a bit. I will not be supercharging the motor or adding nitrous, but I will be doing a full port and polish on it eventually with a cam. So here's the question, while it's out, this is the set of stuff to do so far:

    SLP Performance Valve Springs
    Comp Cams Titanium Retainers (overkill, who cares)
    GM Factory Valve Locks
    Manley 4130 Chromemoly Pushrods
    Comp Cams High Energy Hydraulic Roller Lifters
    New Stock Fuel Injectors

    Is this enough to pretty much guarantee that a lot of hard running and higher rpms arent going to kill the engine too quick without supercharging and nitrous? I know its strong enough stock, but I want it to be nice and sturdy for the roughest situations, and just in case I do eventually put some nitrous or boost on it.. So my main question, without nitrous/boost, need I touch the rods, pistons, or crank?? Thanx again for the help!
    C. Boney<br />1997 Firebird 3.8L V6<br />---------------------<br />Modifications:<br /> <br /> SLP Cold Air Induction, Ported/Polished Throttle Body, Carsound 3\" High Flow Cat, Sweet Thunder 24\" Chambered Muffler, Removed Rear Exhaust Section, Custom Fan Switch, 35th Anniv. Silver Stripes, Old T/A-Style Silver Sail Birds
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  • #2
    Also was wondering where I could find some nice and strong oversize valves for the heads and what mods are needed to run them. Thanx!
    C. Boney<br />1997 Firebird 3.8L V6<br />---------------------<br />Modifications:<br /> <br /> SLP Cold Air Induction, Ported/Polished Throttle Body, Carsound 3\" High Flow Cat, Sweet Thunder 24\" Chambered Muffler, Removed Rear Exhaust Section, Custom Fan Switch, 35th Anniv. Silver Stripes, Old T/A-Style Silver Sail Birds

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    • #3
      manely will make you some custom oversized intake valves 1.9 if im not mistaken. They will only cost you around 200 bucks. There will be no need for forged internals if you are not gonna use a blower turbo or nitrous.
      <b><a href=\"http://www.sick-sixx.com\" target=\"_blank\">SICK-SIXX MEMBER</a></b><br />NA 14.345 with a 1.863 60 foot<br />Nitrous 13.03@99.5 with a 1.63 60 foot<br /><br />2000 Camaro 3.8L A4: USE TO HAVE Comp Cam 210/220 .535/.547 113lsa 111 I/C, Port and Polished Heads, NX Wet Kit 100 Shot, CPRA made by CP, RK Sport Headers

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      • #4
        As far as those Manley 1.90 oversize valves go, will they require any modifications to the head or pistons to work correctly or will they install like the stock size valves??
        C. Boney<br />1997 Firebird 3.8L V6<br />---------------------<br />Modifications:<br /> <br /> SLP Cold Air Induction, Ported/Polished Throttle Body, Carsound 3\" High Flow Cat, Sweet Thunder 24\" Chambered Muffler, Removed Rear Exhaust Section, Custom Fan Switch, 35th Anniv. Silver Stripes, Old T/A-Style Silver Sail Birds

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        • #5
          Yes you will have to recut the valve seats in the heads to allow for bigger valves
          <b><a href=\"http://www.sick-sixx.com\" target=\"_blank\">SICK-SIXX MEMBER</a></b><br />NA 14.345 with a 1.863 60 foot<br />Nitrous 13.03@99.5 with a 1.63 60 foot<br /><br />2000 Camaro 3.8L A4: USE TO HAVE Comp Cam 210/220 .535/.547 113lsa 111 I/C, Port and Polished Heads, NX Wet Kit 100 Shot, CPRA made by CP, RK Sport Headers

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