Gen II Intake Setup

Discussion in 'General Discussion' started by rottenronnie, Feb 9, 2020.

Car Parts
  1. 9 seconds

    9 seconds New Member

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    I will definitely come here to share and look for input. This looks like a later summer project for me right now. Sadly having to install another T56 after destroying mine (don't ask). Got one from Tick. I'll go ahead and install the Viper release bearing / master cylinder along with the McLeod dual disk clutch I've had forever.
     
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  2. rottenronnie

    rottenronnie Well-Known Member Supporting Member

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    Sounds good and... Good luck with the tranny.
     
  3. GSJake

    GSJake Active Member

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  4. rottenronnie

    rottenronnie Well-Known Member Supporting Member

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    Thanks GS!

    I am a torque-whore and that's what I'm after.

    I'd be very happy with the 50 lbs. feet provided by the Gen II intake but if it was more using Strikers (with larger capacity Intake ports), very cool!

    Torque is what made a remarkable difference with the "performance flash/tune" for the Quad Cabs. A whopping 80 lbs. feet of torque "under the curve" aka "on it's way up to peak torque" and that increase chopped a full second off of the QC. Arguably, there would have been a 1/4 mile performance improvement by eliminating TQ management at the same time, as the tunes did, so that 1 second reward is all-inclusive.

    I'm certainly not expecting anywhere near a full second (which would put me in the 10s), but my current camshaft phases at the same rpm the Gen II intake's ram-effect happens. This means yet ANOTHER tune if it all goes as planned. Otherwise, it will likely try to ride the knock-sensors during a 1/4 mile pass.

    I don't know of anyone that's tried this swap on a truck as there is a considerable amount of fartin' around.

    Just looking around, the Driver-Side throttle body would be close to the thermostat housing but the one for the Viper cars is more out of the way and might be the solution.

    I've heard of guys with the cars using the Gen III (thinking it was an "upgrade", which it isn't), but not a Gen II on our trucks.

    EBay...

    Walker Evans (?) May be ported and/or extrude honed.

    Manifold #3 might be fun.
     
  5. Trainman

    Trainman Well-Known Member Supporting Member

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    Ronnie, call me tomorrow, I bought a complete manifold years ago, but never put it on, I will send pictures tomorrow. Trainman
     
  6. rottenronnie

    rottenronnie Well-Known Member Supporting Member

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    My apologies for taking so long.
    I was able to find an intake to test fit and take some measurements, that's all I was really after for now.

    Thanks!
     
  7. rottenronnie

    rottenronnie Well-Known Member Supporting Member

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    I found one to test fit and get some measurements.
    That's all I wanted for now.

    Thanks.
     
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  8. rottenronnie

    rottenronnie Well-Known Member Supporting Member

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    Hello Trainman:

    Can I ask a favor?

    What is the upside-down Gen II Intake runner length (as close as you can get it) from the flange to the Plenum?


    Thanks!!
     
  9. rottenronnie

    rottenronnie Well-Known Member Supporting Member

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    I no longer have access to one, but the runners should be around 11" long .
     
  10. rottenronnie

    rottenronnie Well-Known Member Supporting Member

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    Received an answer, Thanks.
     
  11. rottenronnie

    rottenronnie Well-Known Member Supporting Member

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    "Someone" sent me a text from the States, maybe overseas??, at 3 am (strange number) and I don't know who it was. AND I was unable to return a message. Hmmmmmm.

    Anyway, in answer to that individual's question:

    My Gen III Intake will undergo major surgery for longer runners and higher capacity plenums.

    I was going to try a Gen II Intake (again) but (personally), I don't care for the looks of those as it reminds me of an Industrial Marine Engine.

    Lots of research on Intake-Manifold theory and lots of fabrication but a long winter is coming and I'm out of projects! :)
     
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  12. Psycho1122

    Psycho1122 Full Access Member

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    The cool thing is you have plenty of room under the Ram hood for a "taller" intake. :cool:

    Keep us posted!
     
  13. rottenronnie

    rottenronnie Well-Known Member Supporting Member

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    Will do!
     
  14. rottenronnie

    rottenronnie Well-Known Member Supporting Member

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    At the machinist today and we were going over options to modify my Intake Manifold.
    2-1/2 to 3" of length is being added to the top of each runner (same size and shape as the o.e.m. port) then putting a 1/2" radius on the top of each of those to smooth airflow entry;
    Same 1/2" radius as stock.

    Top was milled instead of zip-cut and won't be reused. Deep-cut on the sides to roughly the center of the fuel-rail.
    A high "rounded" front top will be added that will roughly double the original plenum volume.
    Lots of work and fabrication but it will be worth doing.

    May even use clear Lexan on top of each plenum to see the new "horns", but that is optional at this point.
    Top will either be welded or held on with machine screws with a viton seal all the way around.

    The runners will then be the same length as the Gen II Intake and it should tune really hard at roughly the same spot as my camshaft.
    50+ lbs. feet more torque under the curve where it is needed the most.

    No doubt a re-tune will be required by Chris Jensen.

    No pics of any interest (yet).
     
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  15. Aussie Viper Truck

    Aussie Viper Truck Member

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    I would love to pics of that once done.
     
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  16. rottenronnie

    rottenronnie Well-Known Member Supporting Member

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    I believe it will be a one-off as I don't know of anyone that's tried it.
    A lot of work but all part of the adventure. :)

    I DO think the o.e.m. manifold is holding back power production in my application as it was designed to support around 500 horsepower in it's stock form.

    I will post some pictures once it becomes more interesting.
     
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