340 Rebuild Help

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    Author Topic: 340 Rebuild Help  (Read 6317 times)

    Offline Carlwalski

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    Re: 340 Rebuild Help
    « Reply #30 on: October 20, 2008 - 01:56:23 AM »


    Also, any ideas on some of the lower profile intakes to suit .308 heads? I'm thinking we may sacrifice performance here for the sake of easy fitment for the Shaker. On that note, are you saying we could run an Eddy Performer RPM intake by simply using a unmodified Shaker 440 base? Is this the intake we need?

    http://store.summitracing.com/partdetail.asp?part=EDL%2D7176&autoview=sku
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    Offline Chryco Psycho

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    Re: 340 Rebuild Help
    « Reply #31 on: October 20, 2008 - 03:11:01 AM »
    that or Eddy part # 7576
     I would check with Harms or Snobar to see if a 440 base is the same height as a 340 with that inatke
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    Offline Carlwalski

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    Re: 340 Rebuild Help
    « Reply #32 on: October 20, 2008 - 03:43:46 AM »
    Quote from: Carlwalski on October 20, 2008 - 01:53:33 AM

    Neil, just getting some info to take to my engine builder and I noticed the dur etc on the current cam is close to the Engle 56 and/or 58.
    Is it worth doing being that they seem close or is the cam game like dog years, each +/- is a decent amount?

    Current cam specs: Comp-Cams 20-224-4 extreme energy, 110 degree lobe centers, .488” intake valve lift, .491” exhaust valve lift, 230 degree duration @ .50” intake, 236 degree duration @ .50” exhaust. RPM operating range 1800rpm-6000rpm

    Engle 56: Value Lift .504", Advertised Duration 272°, Cam Lift .336", Duration @.050" 224°, Lobe Center 110°.
    .904" Lifter profile for midrange torque 9 to 1 compression street cars & trucks power from 1800-5500 RPM 

    Engle 58: Value Lift .520", Advertised Duration 276°, Cam Lift .347", Duration @.050" 230°, Lobe Center 110°.
    .904" Lifter profile for Hot street performance, 9 to 9-1/2 to one compression, moderate idle, Midrange power 2000-5800 RPM 

    The 58 looks like it's the one that will offer greater performance gains (obviously).
    What do you think the idle will be like? I don't think Dad would need/want a lumpy idle.


    Thanks.  :thumbsup:


    Thanks mate, not sure if you saw this one, ended up on the last post of the previous page.
    As for the intakes, what would you use out of the two if I used the K58 grind.

     :cheers:
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    Offline 1BADFISH™

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    Re: 340 Rebuild Help
    « Reply #33 on: October 20, 2008 - 09:54:02 AM »
    Hey Carl, not sure if you noticed, but I have 3.08 heads on my car and before I put them on I had to plug the emissions??  holes below the exhaust ports. There is 4 on each head, 1 below each exhaust port. You can either tap them and screw a plug in with locktite, or tap them and fill the holes with JB weld and sand them flush. Thats what I did.    :2thumbs:

    Far as I know, any exhaust/intake that will work with stock heads will work with the 3.08's. 
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    Dave
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    Offline Chryco Psycho

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    Re: 340 Rebuild Help
    « Reply #34 on: October 20, 2008 - 12:04:00 PM »
    neither of those cams has a radical idle which Is why I use so many of them
     the 2 eddy intakes are basically the same except that the # I listed has the advantage of the air gap , & yes any of the LA production intakes fits the 308 casting
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    Offline Carlwalski

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    Re: 340 Rebuild Help
    « Reply #35 on: October 20, 2008 - 08:06:59 PM »


    Awesome, thanks guys. Dave, I didn't know that so thanks for the heads up, no pun intended lol.
    I will go with the K58 grind and look further into the Air Gap and adjust the shaker base to suit (if needed).

     :2thumbs:
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    540ci Aluminium Hemi, F.A.S.T EFI
    TF-727 Gear Vendor OD, Dana 60
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