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FoamyPirate's 1988 R20 Crewcab

Discussion in '2wd Pick-Ups C/R 20 2500 C/R 30 3500' started by foamypirate, Jun 22, 2015.

  1. bucket

    bucket Super Moderator Staff Member

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    Hey, ain't nothing wrong with that either. A cooler does a fine job of keeping the beer cold. Er, I mean sody pops.
     
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  2. bucket

    bucket Super Moderator Staff Member

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    The throw is similar to the later aluminum-topped 465's that were used in the gmt400 trucks.
     
  3. ajd89

    ajd89 Full Access Member

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    :cheers:
     
  4. ajd89

    ajd89 Full Access Member

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    So no worrys of it hitting the dash or seat? I mean its not the first time it's been done but just was thinking that wouldn't be good.
     
  5. foamypirate

    foamypirate Full Access Member

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    First Name:
    Jake (Mr. Wilson)
    Truck Year:
    1988
    Truck Model:
    R20
    Engine Size:
    6.0L LQ9 - NV4500
    My LS swap mounts move the drivetrain forward, so I was a bit worried about that, but it clears with plenty of room. We'll see how comfortable it is once I get the bench seat back in. I may wind up with an SM465 style shifter (with the crazy bends by the floor) to move it a more comfortable spot.
     
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  6. BTeague

    BTeague Junior Member

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    Billy
    Truck Year:
    1987
    Truck Model:
    r20 crew cab
    Engine Size:
    350
    Jake, I've been reading through your thread. I am doing an NV4500 swap in my 87 crew cab. What slave cylinder are you using?
     
  7. foamypirate

    foamypirate Full Access Member

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    Engine Size:
    6.0L LQ9 - NV4500
    Since mine is being installed behind a 6.0L LS, I used the internal slave cylinder from a 2005 GM truck with 6.0L and an NV4500. Is your NV4500 external or internal slave?
     
  8. BTeague

    BTeague Junior Member

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    External. I have everything but the hydraulics.My concern is the mismatch between the squarebody m/c and the slave cylinder that fits the bellhousing(1995).
     
  9. foamypirate

    foamypirate Full Access Member

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    From what I understand, they should work OK together. The bore sizes are pretty much identical.

    Do you know what you are doing for hydraulic lines? I opted to use a -3AN brake line.
    You can adapt the Squarebody MC and the external slave cylinder with the following parts:
    MC to -3AN: EARLS BRAKE UNIFLARE ADAPTER -3 AN MALE TO 12MMX1.00MM - PART# 592053ERL
    Slave to -3AN: Russell Clutch Adapter Fittings 640281


    Here are some pictures I found of a setup with external slave and a SBC, with -AN lines:
    IMG_0678.JPG IMG_0681.JPG
     
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  10. BTeague

    BTeague Junior Member

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    Truck Year:
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    Thanks. Ill give it a try.
     
  11. foamypirate

    foamypirate Full Access Member

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    Truck Year:
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    Truck Model:
    R20
    Engine Size:
    6.0L LQ9 - NV4500
    Finally got a chance to make a little more progress on this today. I've been down sick, had parents visiting, came down sick AGAIN, and even though I'm still a little under the weather, I was tired of hogging up my friends shop, so I spent about 4 hours working today.

    • Clutch pedal position pigtail wired in and wrapped in dry vinyl harness wrap.
    • Fuse block reinstalled (though I may take this back out to fit a little more wiring between the halves. It appears my LS swap wiring may interfere with the clutch pedal throw as it's currently routed.
    • Brake booster, and master cylinder installed and pedal rod attached to brake pedal
    • Clutch master cylinder installed, line attached
    • Radiator trans cooler line looped, last of the hard lines removed.
    • Driveshaft installed
    • Transmission filled with 4 qts of liquid gold
    I still have to install the steering column, figure out the clutch/cruise wiring (think I need to add another wire to the PCM for this, ugh), find a place to mount my clutch reservoir, bleed the clutch, and reinstall my gauge cluster, dashpad, and seat, and it should be driveable, though not finished by any means.

    Random pics (I like gratuitous close ups so people doing similar stuff can see details they may be curious about):


    IMG_6527.JPG IMG_6528.JPG IMG_6529.JPG IMG_6534.JPG
     
  12. foamypirate

    foamypirate Full Access Member

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    Truck Year:
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    Truck Model:
    R20
    Engine Size:
    6.0L LQ9 - NV4500
    My NV4500 uses a monster 1410 U-joint. Makes my 3.5" driveshaft look itty bitty.
    IMG_6530.JPG

    That's a lot of shaft...hehe.
    IMG_6531.JPG

    Had to clearance the crossmember to clear my cats. Ugh.
    IMG_6535.JPG

    Rear view of the transmission.
    IMG_6537.JPG

    More clearancing...
    IMG_6538.JPG
     
    Last edited: Dec 15, 2017
  13. foamypirate

    foamypirate Full Access Member

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    Truck Year:
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    Truck Model:
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    Engine Size:
    6.0L LQ9 - NV4500
    A view from underneath to the cluster-^%#$ that is the dash wiring, currently. :D
    IMG_6539.JPG

    Clutch disc sandwiched by flywheel and pressure plate.
    IMG_6540.JPG

    Small peak at the slave cylinder and fluid fitting.
    IMG_6544.JPG

    Through the bleed area looking at the pressure plate and slave cylinder.
    IMG_6545.JPG

    Better, brighter shot of the above.
    IMG_6547.JPG
     
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  14. OkieFishMan

    OkieFishMan Certified Camping and Fishing Nut

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    Awesome work!
     
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  15. foamypirate

    foamypirate Full Access Member

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    6.0L LQ9 - NV4500
    It's! ALIVE! Not completely finished, but I drove it about 10 miles home with no issues (other than a seriously blond moment I had when first leaving, lol). Drives sweet, but it's loud as all get out in the cab with no insulation/carpet, and a giant hole in the floor, lol.

    Testing the hydraulics to make sure they were all bled appropriately. The pedal effort on this thing is so light, it was throwing me off. You can depress the clutch pedal by hand, quite easily. However, as you can see, the pressure plate is pulled completely away from the clutch disc, so we deemed it good to go (and it was)!
    IMG_6552.JPG


    Taking a small break from working...check out all that leg room!
    IMG_6554.JPG

    The first daylight this truck has seen in about 2.5 weeks. It was nice to work on it in good light again, hah.
    IMG_6556.JPG


    Cobbled together a rudimentary bracket to mount the clutch reservoir.
    IMG_6558.JPG

    IMG_6566.JPG
     
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