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Thread: 5.3/5.7l 72mm turbo truck dyno results

  1. #1
    Join Date
    Mar 2013
    Location
    Edmonton, AB, Canada
    Posts
    133

    5.3/5.7l 72mm turbo truck dyno results

    So here is what I have in the setup:

    607HP and 638lb*ft @ 13lb boost
    Engine:
    -5.3l bored to 5.7l (Thompson Motorsports)
    -799 heads(LS6 head)
    -ARP head bolts
    -Forged Probe Pistons 3.902" flat top
    -TMS Moly rings
    -4340 Forged scat I-beam connecting rod w/ ARP 8740 rod bolts
    -King racing bearings
    -Melling high pressure relief oil pump
    -Wiseco .060" head gaskets
    -7.400" Comp Cams Chromoly Push Rods
    -LS7 lifters
    -.660" Trick Flow dual valve springs
    -Titanium retainers & locks
    -TU1 Custom Grind cam(spec speed.inc)
    -5.3l(LM7) rockers
    -"Muscle Car" oil pan
    -All other parts are stk 5.3l(LM7)

    Turbo:
    -72mm .96ar journal bearing Magnum Turbo
    -CX racing intercooler kit

    Fueling:
    -Aeromotive 340 stealth in-tank
    -Aeromotive a1000 fuel pressure regulator
    -Professional products fuel rails
    -60lb/hr motron injectors
    -dual nozzel water/meth injection (devils-own) DO3 + DO7

    Watch the Failures, build, and dyno runs here:

    https://www.youtube.com/watch?v=Rm_VprOaaAM
    Attached Images
    Back Alley Motorsports 98 GMC
    -5.3l LM7 bored to 5.7l Thompson Motorsports -72mm T4 Magnum Turbo
    -TU1 Custom Grind cam(spec speed.inc) -799 heads
    -.660" Trick Flow dual valve springs -Forged Probe Pistons 3.902" flat top

  2. #2
    Join Date
    Mar 2013
    Location
    Edmonton, AB, Canada
    Posts
    133
    Special Thanks to the following:

    Back Alley Motorsports(Kevin, Dale, Derek, Brad, Kale, Brett)- Electrical, fabrication, installation

    Cougar Paint and Collision(Eileen, Graham, Gordon, Heather, Rod)- Paint and body work

    HP solutions(Neil Richards)-Technical advisor

    Daves Auto Ltd.(Gursimer Hansra)- Diagnostics

    lt1swap.com(Brendan)- Technical advisor

    ls1truck.com(farmtruc, capricefrk013, mickeymotormount, kewljay223)

    Additional thanks: Steve Bullerwell, Vance Bindon


    Here is the cost breakdown. I pretty much listed everything. Total is about $16,000 into the swap. These snapshots arent the greatest- if you want copies just let me know
    Attached Images
    Last edited by shmiet; 08-23-2014 at 08:14 PM.
    Back Alley Motorsports 98 GMC
    -5.3l LM7 bored to 5.7l Thompson Motorsports -72mm T4 Magnum Turbo
    -TU1 Custom Grind cam(spec speed.inc) -799 heads
    -.660" Trick Flow dual valve springs -Forged Probe Pistons 3.902" flat top

  3. #3
    Join Date
    Jan 2008
    Posts
    8,203
    Damm nice setup, what the hell happened the 2nd time?

  4. #4
    Join Date
    Mar 2013
    Location
    Edmonton, AB, Canada
    Posts
    133
    Thanks man. Hard to say, I sent the block back to Thompson and they didnt have a clue what could cause that much damage. I had my engine guy also have a look and he couldn't give me a definitive answer either. So I'm assuming a bad casting??
    Back Alley Motorsports 98 GMC
    -5.3l LM7 bored to 5.7l Thompson Motorsports -72mm T4 Magnum Turbo
    -TU1 Custom Grind cam(spec speed.inc) -799 heads
    -.660" Trick Flow dual valve springs -Forged Probe Pistons 3.902" flat top

  5. #5
    lots of hard work and its finally paying off congrats

  6. #6
    Join Date
    Dec 2009
    Location
    DIrty south AZ
    Posts
    1,024
    Nice Set up and great numbers, My set up dam close to yours made 600/656 on 13lbs, glad to see another 5.3 getting er done with the cx turbo
    Built 2 Run! 6XX HP/ 6XX TQ

  7. #7
    Join Date
    Mar 2013
    Location
    Edmonton, AB, Canada
    Posts
    133
    Thanks alot guys. Really appreciate it.

    The CX turbo is essentially a copy of the magnum?

  8. #8
    Join Date
    Dec 2009
    Location
    DIrty south AZ
    Posts
    1,024
    that im not sure? seems alot like it tho? i doubt ill switch to something else price is great and spools hella fast
    Built 2 Run! 6XX HP/ 6XX TQ

  9. #9
    Join Date
    Dec 2009
    Location
    DIrty south AZ
    Posts
    1,024
    any track times yet?
    Built 2 Run! 6XX HP/ 6XX TQ

  10. #10
    Join Date
    Mar 2013
    Location
    Edmonton, AB, Canada
    Posts
    133
    Quote Originally Posted by darnie1987 View Post
    any track times yet?
    Went 12.34s @ 120.10mph

    I didn't build a lot of boost at launch. I kept rolling on the brakes. With line lock I could prolly drop to mid 11's

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