4.5 in an Isuzu Trooper
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HT4100 4.1, 4.5, 4.9 Discussion, 4.5 in an Isuzu Trooper in Cadillac Engine Technical Discussion; I'd like to see his motor mounts http://www.cardomain.com/ride/2046320/3...
  1. #1
    ehall's Avatar
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    4.5 in an Isuzu Trooper

    I'd like to see his motor mounts

    http://www.cardomain.com/ride/2046320/3

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    noahsdad's Avatar
    noahsdad is offline Cadillac Owners Connoisseur
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    Re: 4.5 in an Isuzu Trooper

    That's just crazy. Wonder how he gets around all the ECM controlled stuff (tps, o2 sensors, injectors, etc?)

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    Re: 4.5 in an Isuzu Trooper

    Thats pretty cool! I've never seen a 4.5 in anything else besides a fiero. He must have chose it to save weight... probably not the most ideal engine for his application.

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    ehall's Avatar
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    Re: 4.5 in an Isuzu Trooper

    The torque curve on these is pretty good, plus the weight is a factor. Having said that I wouldn't do it, since the amount of custom fab work required is pretty high compared to something like a Chevy 350. The benefit just wouldn't be worth the development effort.

    As for ECM work I ass-u-me he used the one from the donor, but then the next question is if he also used the BCM, and what did he do about all the other stuff (gauges etc). It's a trail boat so he probably skipped on all that. Or maybe he used a stock GM throttle body and FI controller, those are widely available but then issues with ISC management, etc., and its not a 350, so ... I dunno.

    Must have been a free car.

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    ehall's Avatar
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    Re: 4.5 in an Isuzu Trooper

    I was searching to see if I could find more info and found another one...

    http://myweb.cableone.net/bcanderson...c/cadillac.htm

    Discussion board posts say change the TBI and injectors, and the Trooper computer works. Early gen Troopers apparently used GM TBI engines same as the S-10 Blazer. Dunno how they get around the ignition.

  7. #6
    Will's Fiero is offline Cadillac Owners Member
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    Re: 4.5 in an Isuzu Trooper

    7730 computer from a multitude of GM applications, including '90-'92 Transmarobirds can be retuned to run a PFI 4.5/4.9, especially if using a throttle body from a TPI or LT1 engine.
    The TBI engines can be run by almost any OBDI computer GM made.

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