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Thread: L94 & 6L80 Into My '92 2dr K1500 Blazer

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  1. #1
    Join Date
    Aug 2014
    Posts
    111
    And the exhaust is done! You can't see the crossover in the pics, but it's there behind a crossmember. The crossover is band clamped on. I'll have unions installed once I'm sure I'm happy with the exhaust after it's running.
    20150512_123618 (Custom).jpg20150512_123840 (Custom).jpg20150512_123822 (Custom).jpg20150512_123704 (Custom).jpg20150512_123643 (Custom).jpg
    Last edited by Nak; 05-14-2015 at 12:23 AM.
    1992 K1500 Blazer.
    L94 & 6L80
    14 Bolt SF axle w/11" brakes & appropriate Combination brake valve, Eaton Trutrac rear posi.
    8000# hidden winch, Rocket Box, KYB Monomax shocks
    285/75R16 Duratracks
    Flat Panel Display Gauge cluster in progress.
    http://www.ls1truck.com/forums/lsx-t...00-blazer.html
    New interior & exterior paint planned.

  2. #2
    Join Date
    Aug 2014
    Posts
    111
    I could never do this for a living, I am so damned slow! LOL.

    Finished the transmission cooler. Factory hard lines to AN -6 fittings with an Improved Racing 165 degree thermostat and a B&M 30K cooler. Plumbed through the factory in radiator cooler. I wasn't going to use the in radiator cooler, but after a bunch of research I changed my mind. You can see I'll be doing the same with the engine oil cooler. (AN -8) I'll be using the Improved racing low profile 185 degree thermostat for the oil.

    P1030772 (Custom).JPGP1030770 (Custom).JPGP1030776 (Custom).JPGP1030774 (Custom).JPGP1030777 (Custom).JPG
    1992 K1500 Blazer.
    L94 & 6L80
    14 Bolt SF axle w/11" brakes & appropriate Combination brake valve, Eaton Trutrac rear posi.
    8000# hidden winch, Rocket Box, KYB Monomax shocks
    285/75R16 Duratracks
    Flat Panel Display Gauge cluster in progress.
    http://www.ls1truck.com/forums/lsx-t...00-blazer.html
    New interior & exterior paint planned.

  3. #3
    Join Date
    Aug 2014
    Posts
    111
    Getting there bit by bit...

    Installed my PML rear diff cover. Mounted the 2001 corvette fuel filter/pressure regulator. Modified my 2 wire alternator into a 4 wire alternator. (Computer controlled to standard voltage regulator.) It's basically a brand new 160 amp alternator, so well worth modifying over buying a new one.

    I had to send my harness back to Motech to swap for a new one. The one I had was just too short between the engine and the ECM. Motech was very good about swapping the harness, especially when you consider I bought it months ago. Also, I'm having them modify it with breakouts for fuel level, vapor pressure and Evap purge control. The stock harness has pigtails for the latter two, but I want them to break out near the ECM and run the wires along the frame rail. The stock Motech has them coming out the rear of the trans wiring. That's fine for single exhaust, but it would go right over both my crossover pipe and the driver's side exhaust tailpipe where it crosses to the passenger side. So it'll be a week or two till I get the harness back.

    I placed the 2012 surge tank. I'll have to zip tie it down until I get the custom AC hoses done. Still trying to decide what compressor I'll go with.P1030798 (Custom).JPGP1030800 (Custom).JPGP1030796 (Custom).JPGP1030797 (Custom).JPG

    Not much to do left until I get the harness back. Run the fuel lines, run the oil cooler lines, hook up the windshield washers.
    1992 K1500 Blazer.
    L94 & 6L80
    14 Bolt SF axle w/11" brakes & appropriate Combination brake valve, Eaton Trutrac rear posi.
    8000# hidden winch, Rocket Box, KYB Monomax shocks
    285/75R16 Duratracks
    Flat Panel Display Gauge cluster in progress.
    http://www.ls1truck.com/forums/lsx-t...00-blazer.html
    New interior & exterior paint planned.

  4. #4
    Join Date
    Aug 2014
    Posts
    111
    Oil cooler done. I was worried intitially that the thermostat wouldn't clear the front drive shaft, but there was plenty of clearance. Also got the front fuel line run. Up the frame rail and around the brake booster to keep it away from the exhaust. That's the last i'll do until I get my harness back from Motech.P1030804 (Custom).JPGP1030810 (Custom).jpgP1030808 (Custom).JPGP1030806 (Custom).JPG
    1992 K1500 Blazer.
    L94 & 6L80
    14 Bolt SF axle w/11" brakes & appropriate Combination brake valve, Eaton Trutrac rear posi.
    8000# hidden winch, Rocket Box, KYB Monomax shocks
    285/75R16 Duratracks
    Flat Panel Display Gauge cluster in progress.
    http://www.ls1truck.com/forums/lsx-t...00-blazer.html
    New interior & exterior paint planned.

  5. #5
    Join Date
    Aug 2014
    Posts
    111
    Wow. Found this regulator. Fits the late model alternator while only modding the plastic cover? http://www.aspwholesale.com/index.ph...roduct_id=1696 http://www.langemachinery.com/Auto%2...=22756&xx=QDQX http://store.alternatorparts.com/d3579--.aspx Voltage regulator D3579. Looks like a much better solution.
    Last edited by Nak; 05-21-2015 at 02:39 AM.
    1992 K1500 Blazer.
    L94 & 6L80
    14 Bolt SF axle w/11" brakes & appropriate Combination brake valve, Eaton Trutrac rear posi.
    8000# hidden winch, Rocket Box, KYB Monomax shocks
    285/75R16 Duratracks
    Flat Panel Display Gauge cluster in progress.
    http://www.ls1truck.com/forums/lsx-t...00-blazer.html
    New interior & exterior paint planned.

  6. #6
    Join Date
    Mar 2003
    Location
    San Antonio, TX
    Posts
    11,038
    For the record a newer or older pcm can control a newer or older alternator.

  7. #7
    Join Date
    Aug 2014
    Posts
    111
    The harness should ship 2nd day air on Monday... Waiting is killing me!
    1992 K1500 Blazer.
    L94 & 6L80
    14 Bolt SF axle w/11" brakes & appropriate Combination brake valve, Eaton Trutrac rear posi.
    8000# hidden winch, Rocket Box, KYB Monomax shocks
    285/75R16 Duratracks
    Flat Panel Display Gauge cluster in progress.
    http://www.ls1truck.com/forums/lsx-t...00-blazer.html
    New interior & exterior paint planned.

  8. #8
    Join Date
    Aug 2014
    Posts
    111
    The harness finally came fro Motech! Unfortunately, I'm now gone on a work trip for a week, then I have to do the wiring on our remodel. The earliest I'll be able to work on the truck will be the 14th, but I might have to go on another trip by then. So, possibly the 20th or so before I can get back to it. Frustrating, because I should be able to get her running with about two days of work...
    1992 K1500 Blazer.
    L94 & 6L80
    14 Bolt SF axle w/11" brakes & appropriate Combination brake valve, Eaton Trutrac rear posi.
    8000# hidden winch, Rocket Box, KYB Monomax shocks
    285/75R16 Duratracks
    Flat Panel Display Gauge cluster in progress.
    http://www.ls1truck.com/forums/lsx-t...00-blazer.html
    New interior & exterior paint planned.

  9. #9
    Join Date
    Aug 2014
    Posts
    111
    IT'S ALIVE!!!

    Turns out it was the internal shift linkage. Interesting, because the trans was supposed to have come from a running vehicle. Not possible. I'll get videos up, but here are my impressions: The Dynomax VT mufflers sound great at level ground cruise and wide open throttle. Lot's of drone at uphill cruise. The valves in the mufflers need to be sprung stiffer. I really need a tune, because off the line is obviously restricted somehow. Once you're rolling, HOLY CRAP! The factory electric fans were well worth the effort. The Improved Racing engine oil cooler and trans oil cooler thermostats work great and are well worth the effort & cost. The factory truck DBW throttle needs a heavier spring. Mandrel bent dual exhaust sounds incredible at WOT. Setting up the steam vent as the engineers intended is worth it.
    Last edited by Nak; 07-15-2015 at 01:25 AM.
    1992 K1500 Blazer.
    L94 & 6L80
    14 Bolt SF axle w/11" brakes & appropriate Combination brake valve, Eaton Trutrac rear posi.
    8000# hidden winch, Rocket Box, KYB Monomax shocks
    285/75R16 Duratracks
    Flat Panel Display Gauge cluster in progress.
    http://www.ls1truck.com/forums/lsx-t...00-blazer.html
    New interior & exterior paint planned.

  10. #10
    Maybe I missed it, but did your driveshafts work without needing modification? And if you haven't gotten an answer about the boss you trimmed, it looks like it was for the A/C compressor bracket. I remember I needed to grind my 1" set back plates a little bit to clear the boss on my 5.3.

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