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Thread: 6x6 V8

  1. #1
    6x6 Guest

    6x6 V8

    Hello everyone,

    I have a Perentie 6x6 normal set up for the moment.

    I would like to drop a V8 diesel in it.

    Any suggestions , advices , what engine/gear boxes suits best ?
    Has anyone ever done one or have one ?

    Anyone would know a company or workshop that can be trusted to do this /

    Thanks in advance.

    6x6

  2. #2
    Bearman's Avatar
    Bearman is offline TopicToaster Gold Subscriber
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    Quote Originally Posted by 6x6 View Post
    Hello everyone,

    I have a Perentie 6x6 normal set up for the moment.

    I would like to drop a V8 diesel in it.

    Any suggestions , advices , what engine/gear boxes suits best ?
    Has anyone ever done one or have one ?

    Anyone would know a company or workshop that can be trusted to do this /

    Thanks in advance.

    6x6
    G'day 6x6 and welcome, what brand of V8 diesel are you looking at. If it's a Chev I would forget about it. I have seen a couple of conversions with the 6.5 motor and neither was a success. Not much extra power and overheating problems. I have thought long and hard over this subject and have decided if I was going to look for more HP I would go for an Isuzu 6BD1T (5.8L) with an Isuzu 5 or 6 speed box mated to the LT95 transfer case that's already in there. You have to keep this transfer case for the 3rd axle drive. This is a much better motor than the Chev V8's. That way you wouldn't have to modify any driveshafts. A fair bit of modification required to do it but at least it is a known reliable drivetrain and an excellent motor in fact the same motor that's already in there with 2 extra pots. That way you could run 3.5 ratio diffs and not be overrevving the motor at 100k. The 6x6 chassis already has extra holes in the chassis brackets for moving the gearbox if need be. I am still running the standard 4BD1T motor but have upped the fuel a little and added a 3" exhaust and it runs much better but still wouldn't run 3.5 diffs efficiently. I just did a trip from Qld to WA and back with a fair load and pulling a loaded PT2 Haulmark trailer one way and it handled it ok. I have seen a couple that have done turbo upgrades and intercoolers etc and will then handle the 3.5 diffs but both have had turbo failures and I wouldn't go that way.
    Cheers......Brian
    1985 110 V8 County
    1998 110 Perentie GS Cargo 6X6 ARN 202516 (Brutus)

  3. #3
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    I have the 6.2 Chev in mine but only because it was easy to put an auto behind.
    Both autos couldnt hack it so the Isuzu MSA went in.
    If I was doing it again the Isuzu would be the choice as Bearman says.

    Keith

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    OR....

    you could just work the 4bd1 thats in there....
    Dave

    "In a Landrover the other vehicle is your crumple zone."

    For spelling call Rogets, for mechanicing call me.

    Fozzy, 2.25D SIII Ex DCA Ute
    Tdi autoManual d1 (gave it to the Mupion)
    Archaeoptersix 1990 6x6 dual cab(This things staying)


    If you've benefited from one or more of my posts please remember, your taxes paid for my skill sets, I'm just trying to make sure you get your monies worth.
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  5. #5
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    Dave,
    what do you suggest to gain improved performance?
    Not that I am looking for any more out of mine, just curious.


    Cheers, Mick.
    1974 S3 88 Holden 186.
    1971 S2A 88
    1971 S2A 109 6 cyl. tray back.
    1964 S2A 88 "Starfire Four" engine!
    1972 S3 88 x 2
    1959 S2 88 ARN 111-014
    1959 S2 88 ARN 111-556
    1988 Perentie 110 FFR ARN 48-728 steering now KLR PAS!
    REMLR 88
    1969 BSA Bantam B175

  6. #6
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    Welcome and yes try and stay away from the v8 chev diesel....
    The Isuzu 110. Solid and as dependable as a rock, coming soon with auto box😊
    The Range Rover L322 4.4.TTDV8 ....probably won't bother with the remap..😈

  7. #7
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    get it all in spec and then play with the fuelling and throttle stops to start with.

    then you need a better echaust and turbo.
    Dave

    "In a Landrover the other vehicle is your crumple zone."

    For spelling call Rogets, for mechanicing call me.

    Fozzy, 2.25D SIII Ex DCA Ute
    Tdi autoManual d1 (gave it to the Mupion)
    Archaeoptersix 1990 6x6 dual cab(This things staying)


    If you've benefited from one or more of my posts please remember, your taxes paid for my skill sets, I'm just trying to make sure you get your monies worth.
    If you think you're in front on the deal, pay it forwards.

  8. #8
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    Hi,
    On my 6 x 6 camper, I run the 3.5 diffs & 750 x 16 tyres. The motor & turbo are standard, the exhaust is 3". At 100 ks 2,700 2,800 rpm. It has been used a lot on & offroad. The worst thing is in high range 1st is to high when taking off up a slight hill. I need to slip the clutch too much. Apart from that it is great. Paul.

  9. #9
    Bearman's Avatar
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    Paul, how does your 6x6 handle hills with the 3.5 diffs. As I said earlier in this thread I just did a trip to WA and back with a fair load and even with the standard 4.7 diffs it just handled it ok. I know the 4BD1's are a torquey motor but I doubt that it would have handled 3.5's with the load I was carrying. Don't get me wrong, I would love to change them to get the revs down a bit and I already have all the centres and gears here to do it but still not sure it will handle it. I was thinking 4.1's might be more suitable. Do you ever get up this way (Hay Point, Qld) I would love to go for a spin in yours and experience the difference. Cheers......Brian
    Cheers......Brian
    1985 110 V8 County
    1998 110 Perentie GS Cargo 6X6 ARN 202516 (Brutus)

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    Hi Brian, I have done 3 trips to Perth with a fair load. From Grafton up the Gwyder Hwy is the hilliest part of the trip. I can go up in 3rd gear most of the time as it just keeps pulling down to 1800 rpm. Apart from that I sit on 100 ks. If you are down this way you are more than welcome to have a drive.
    Paul.

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