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Thread: H3 6.0L LS Swap

  1. #46
    Mud Terrain
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    Quote Originally Posted by SuperBuickGuy View Post
    I just replaced my radiator with the CRS (Chinese) radiator (all aluminum). I'm running cooler then before.... $155 delivered and it works. Be sure to tighten the cooler lines - it took more then I thought they should have needed, but it works.



    a couple things as well, the stock radiator doesn't use rubber bumpers under the pins (what holds the radiator in place). I used some electrical rubber grommets otherwise your lower hose will rub on the sway bar.... also, it's not perfect - the shroud needs a bit of opening up the hooks to work... (upper part).

    and it's $145 here
    http://www.rakuten.com/prod/oem-2596...FQqGfgodK0gAig
    Not bad for an all aluminum radiator. I kinda want to replace my stock one before it blows. (just another ticking time bomb on our H3s)

  2. #47
    Bogger
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    Quote Originally Posted by tmhb16 View Post
    Good to to know the Griffin doesn't have enough cooling capacity. I'm going to try to find the largest 3 or 4 row aluminum universal radiator that will fit and fabricate some mounting brackets. Probably will have to ditch the mechanical fan and go electric for clearance reasons
    My other problem with the griffin rad was that there was only 4.3" of clearance left between the rad and the engine. The top of the line spal fans (baddest cfm pullers) are 4". A thicker radiator will reduce your options of having fans to fit.

    I'm using a dual 12" spal setup but without a shroud (no more clearance). In comparison, the vette guys upgrade their stock setup to a dual 11" + dual row rad while the 2009+ trucks use dual 14"s stock (but they are of the less powerful fans). The wider truck radiator (28"-32") really helps cool those vehicles as opposed to the 23" rad on the h3.
    06 H3, Birch White, Lux , Cooper AT3 35s, Borla Performance Cat-back, Bilsteins front w/ 1/2" extended stops, Hunner sleeve, Air Doc w/ K&N filter, Oem Roof lights, 55W HID Headlights and 35W Fog lights.

    09 H3 V8, LS376/480 Conversion, 3000 stall, Arctic Silver, 35s, XD Rockstar Wheels 17x8 Front 17x9 Rear, OEM Sliders, 40K External Trans Cooler, Bilstein 5160s front 5100 rear, O.D. Steering Bracket, Daystar 1" Body Lift, Borla Performance Cat-Back, custom intake pipe & K&N filter, Custom PCM tune, Pioneer DVD unit, Aurora 40" LED Light Bar, 50 W HID Headlights

  3. #48
    Bald Tire
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    Videos!

  4. #49
    All Terrain
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    interested indeed ... can you compile a parts / build list?
    Blacksheep HUMMER Squadron : GREAT WHITE NORTH
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  5. #50
    Bogger
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    Dont want to hijack but here is my post:

    http://www.hummer4x4offroad.com/foru...d.php?p=203838
    06 H3, Birch White, Lux , Cooper AT3 35s, Borla Performance Cat-back, Bilsteins front w/ 1/2" extended stops, Hunner sleeve, Air Doc w/ K&N filter, Oem Roof lights, 55W HID Headlights and 35W Fog lights.

    09 H3 V8, LS376/480 Conversion, 3000 stall, Arctic Silver, 35s, XD Rockstar Wheels 17x8 Front 17x9 Rear, OEM Sliders, 40K External Trans Cooler, Bilstein 5160s front 5100 rear, O.D. Steering Bracket, Daystar 1" Body Lift, Borla Performance Cat-Back, custom intake pipe & K&N filter, Custom PCM tune, Pioneer DVD unit, Aurora 40" LED Light Bar, 50 W HID Headlights

  6. #51
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    Quote Originally Posted by amrg View Post
    Dont want to hijack but here is my post:

    http://www.hummer4x4offroad.com/foru...d.php?p=203838
    Thanks! A bit different as you went from the factory V8, but I enjoyed reading through your posts.
    Blacksheep HUMMER Squadron : GREAT WHITE NORTH
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  7. #52
    Bogger
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    Quote Originally Posted by autumn walker View Post
    Thanks! A bit different as you went from the factory V8, but I enjoyed reading through your posts.
    The person that got my engine (Humvee) swapped from a 5 cylinder to a V8. He documented every step of the way here. Its much more complex and involved than what I did.
    06 H3, Birch White, Lux , Cooper AT3 35s, Borla Performance Cat-back, Bilsteins front w/ 1/2" extended stops, Hunner sleeve, Air Doc w/ K&N filter, Oem Roof lights, 55W HID Headlights and 35W Fog lights.

    09 H3 V8, LS376/480 Conversion, 3000 stall, Arctic Silver, 35s, XD Rockstar Wheels 17x8 Front 17x9 Rear, OEM Sliders, 40K External Trans Cooler, Bilstein 5160s front 5100 rear, O.D. Steering Bracket, Daystar 1" Body Lift, Borla Performance Cat-Back, custom intake pipe & K&N filter, Custom PCM tune, Pioneer DVD unit, Aurora 40" LED Light Bar, 50 W HID Headlights

  8. #53
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    Getting ready to start my 6 liter swap, for me it will be into a 2006 also. I will be using a LY6 and a built 4L60e. I have the wiring, engine, and trans figured out but now I'm starting to look at the small stuff that will be required. Do you have a list of the fuel line parts you ordered and used? Coming from the I-5 were you able to reuse any of the rad hoses, heater core hoses, cooling fan, cooling fan shroud, etc from the I-5 motor or did you just have to order parts for the alpha?
    Last edited by napalmsticks; 02-09-2019 at 07:27 AM.

  9. #54
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    Also, did you use 2008+ alpha programming for the ECU or Colorado V8 programming?

  10. #55
    Bogger
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    The most pain in the ass items are, in no sort of order:

    Getting the exhaust manifolds for an alpha (any other manifolds wont work so if you want get headers and bang the hell off them to fit)
    Getting an oil pan for an alpha

    Make sure the 4l60e is for a V8 (not I5/I6/V6) and has an alpha valve body/ oil pan for clearance

    Humvees thread is extremely thorough and covers 99% of the parts ...


    Sent from my SM-G960F using Tapatalk
    06 H3, Birch White, Lux , Cooper AT3 35s, Borla Performance Cat-back, Bilsteins front w/ 1/2" extended stops, Hunner sleeve, Air Doc w/ K&N filter, Oem Roof lights, 55W HID Headlights and 35W Fog lights.

    09 H3 V8, LS376/480 Conversion, 3000 stall, Arctic Silver, 35s, XD Rockstar Wheels 17x8 Front 17x9 Rear, OEM Sliders, 40K External Trans Cooler, Bilstein 5160s front 5100 rear, O.D. Steering Bracket, Daystar 1" Body Lift, Borla Performance Cat-Back, custom intake pipe & K&N filter, Custom PCM tune, Pioneer DVD unit, Aurora 40" LED Light Bar, 50 W HID Headlights

  11. #56
    Bogger
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    Quote Originally Posted by napalmsticks View Post
    Also, did you use 2008+ alpha programming for the ECU or Colorado V8 programming?
    This depends on what engine/trans you use.
    A gen IV engine uses a different ecu than a Gen III engine. It would be best to get the same ecu/tcu for the engine/trans you're getting.
    The Alpha uses an LH8 (Gen IV LS family) that needs an E67 ecu. Since it doesnt have a dedicated trans output, a T42 tcm is required to control a 4l60e. You will also need to source a 4l60e with an internal speed sensor (iss) not present in older models to work with the tcu.



    Sent from my SM-G960F using Tapatalk
    06 H3, Birch White, Lux , Cooper AT3 35s, Borla Performance Cat-back, Bilsteins front w/ 1/2" extended stops, Hunner sleeve, Air Doc w/ K&N filter, Oem Roof lights, 55W HID Headlights and 35W Fog lights.

    09 H3 V8, LS376/480 Conversion, 3000 stall, Arctic Silver, 35s, XD Rockstar Wheels 17x8 Front 17x9 Rear, OEM Sliders, 40K External Trans Cooler, Bilstein 5160s front 5100 rear, O.D. Steering Bracket, Daystar 1" Body Lift, Borla Performance Cat-Back, custom intake pipe & K&N filter, Custom PCM tune, Pioneer DVD unit, Aurora 40" LED Light Bar, 50 W HID Headlights

  12. #57
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    Absolutely, I'm tracking all of that. Will be using a 58x engine with a 4L60e from an Alpha. Just looking into ancillary parts now.

  13. #58
    Super Swamper
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    H3 6.0L LS Swap

    Did you need to pound the firewall back? I have heard that 06-07 models are missing the firewall reliefs that the 08-up models have. The few homebuilt Alphas I have seen, required some creative massaging. Just curious if this was a problem.
    Last edited by 4speedfunk; 02-11-2019 at 07:34 AM.

  14. #59
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    On the wait list for a 6.0. I've heard if you use a car intake it might not be needed. I plan to install a VVT cam with the VVT limiter. Should be good for around 450hp / 400 ft lbs at the crank. Need to swap to an iron front diff I think too.


 

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