GM Truck Club
THE PREMIER CHEVY TRUCK & SUV FORUM
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Results 1 to 6 of 6
  1. #1
    Legend

    Join Date
    Jun 2006
    Location
    River Ridge Louisiana-4 miles W of New Orleans-didn't flood-water stopped 800 yards away.
    Posts
    1,612

    Default Stupid-replacing 5.7 with 5.3 1998 Suburban

    OK ,I suspect this is stupid , but I have to ask just in case there is some drop in kit out there like there is for putting a V-8 in an S-10.

    I have a 1998 Suburban 1/2 ton 2wd with a 5.7.It runs great uses just 1 qt per 3000 miles and gets 21 mpg on lont highway trips.Unfortunately it has 205,600 miles on it ,so someday it will need a new motor.

    I've been eyeing some later Suburbans-a guy locally wants just $6500 for a somewhat beat up(body beat up)2002 Suburban with 94,000 miles on it. Smart play might be to buy it and sell mine for the maybe $2500 I could get for it ( greatest $2500 car ever sold-hate to sell so cheap because it has proven itself to be soooo gooood!)

    But I like mine, it is reliable-trans rebuilt 20,000 miles ago , AC stuff redone 40,000 miles ago-everything works ,and it is white -a color I like, cooler here in NOLA etc.

    How hard -impossible -would it be to put a GM 5.3 in my 98 Suburban? Specifically I would like to put the graphite coated piston/ hotter cam GM performance 5.3 which makes 330 HP and cost $3100 delivered.

    Obviously I would have to get all the ignition stuff -the engine control module,FI etc.With every other brand but GM/Chevy it would be waaaay too expensive, but GM parts are cheap and available.

    Plan B is to sell mine-for close to nothing and buy a 2002 paying about $9000-$9500 for a low mile not beaten up Suburban with 65000 miles on it.

    Plan C is to put the GM drop in 383 Stroker motor in-$4800 delivered with distributor,spark plugs,wires,gaskets, oil filter almost everytrhing but the labor. This would hurt FE of course.The 5.3 would probably get the same FE as I get now.Kinda stupid with gas so expensive.

    I expect that this swap is never done,so it is probably waaaaay out of my league - no motor mounts etc -and I sure as heck can't fabricated motor mounts.

    PLAN D- just put a $2200 GM Goodwrench new 5.7 in when it breaks- or just before it plans to break(ha,ha)!!-This is the smart play.

    Thanks,
    Charlie
    1998 suburban-
    1/2 ton

    199500 miles
    River
    Ridge,LA

  2. #2
    Moderator
    Davandy's Avatar
    Join Date
    Jun 2005
    Location
    Haasdonk Belgium
    Posts
    1,550

    Default

    I would go for plan D
    Peter Smet
    Haasdonk, Belgium

  3. #3

    Default

    Keep looking. There may even be an aftermarket motor mount to put the V8 in the S-10. Street rodders do that all the time, especially for quarter-mile trucks (lots of power is a small package). Anyways, I know its possible, just have to find the right equipment.

    2007 Silverado LT Z71 4x4 Crew Cab
    Dark Metallic Blue

    Mods to come, just purchased on 10/31/09

    Go Pack Go!

  4. #4

    Default

    Plan D would be the best.

    Plan A is too expensive for little or no performance/MPG gains.

    Plan B is nice if you need or want a newer truck. If your just worried about running gear it'd be cheaper to buy a new engine and trans, then replace suspension as needed.

    Plan C yea, well most hotrodders think this way, then settle for a hopped up crate 350 after they asses the financial expense of a stroker.

  5. #5

    Default

    i would go with plan c or d.

  6. #6
    Legend

    Join Date
    Jun 2006
    Location
    River Ridge Louisiana-4 miles W of New Orleans-didn't flood-water stopped 800 yards away.
    Posts
    1,612

    Default

    Thanks all,
    So just replacing the motor with a Goodwrench-Plan D- or Plan B if I had a spare $7000 (difference between what I could get for mine,and the $9000 cost for s low mile 2002). I would love to have the better brakes ,side airbags and less over boosted power steering that the 2002's have, but I probably can't get $7000 in one lump now.

    tbplus10- the GM performance stroker is $4800 delivered, but it has 430 lb-ft and my stock trans is only good to 380 lb-ft or so I think . sI guess I would need another $1700 for a better trans. It would be about as expensive as getting a 2002 ,and I would still have the crummy 98 brakes,and the too twitchy at highway speeds power steering. I'm guessing that and maybe I woulod need a differential upgrade also-I can see what deters folks from going to the stroker-might cost $8000-$9000 once the trans and diff are upgraded.

    My trans was rebuilt at 185,000 miles ,so I really should hang on to this one- lotta new parts-AC rebuilt at 155,000, trans 185,000, intake manifold gasket 155,000, new radiator at 200,000 , new brake booster 200,000, new belt tensioner , new water pump at 200,000 , new shocks at 195,000.

    The engine,and the electronics, the fuel pump ,the steering, etc are about the only wear parts that aren't "new",and for all I know maybe the fuel pump has been changed.

    Well, I hoped there might be some "kit" out there , but plan D or B is it.

    Thanks,
    Charlie
    1998 suburban-
    1/2 ton

    199500 miles
    River
    Ridge,LA

Similar Threads

  1. Stupid deer or stupid driver? HMM! [Expired Topic]
    By sloppytot in forum Chevy Equinox Forum (GMC Terrain)
    Replies: 0
    Last Post: 12-07-2009, 04:09 PM
  2. Stupid stupid stupid people!!!
    By Mean_Green_95 in forum General Chevy & GM Tech Questions
    Replies: 20
    Last Post: 08-04-2009, 03:24 PM
  3. 1998 tahoe 2dr stupid question
    By lmarinukjr in forum GM Powertrain
    Replies: 7
    Last Post: 06-09-2009, 01:31 PM
  4. CV Axle needs replacing on 99 Suburban
    By george thomasjr in forum Chevy Suburban Forum (GMC Yukon XL)
    Replies: 3
    Last Post: 01-19-2009, 06:42 AM
  5. Replacing Suburban A/C
    By cao88c in forum General Chevy & GM Tech Questions
    Replies: 2
    Last Post: 01-24-2008, 02:02 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •