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    Thread: It's not an LTD... it's not a Roadmaster... it's a Suburban! Now tell me about them!

    1. Member mm3's Avatar
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      09-30-2012 02:38 AM #1
      A 1988 Suburban, to be exact. 101k miles, 350 (5.7L) V8. Apparently it's an '88, but it's carb'd... which contradicts what Wikipedia says, as that in '86-'87 GM switched to the TBI?



      Learn me about this generation of Suburbans! The interior in this one is immaculate, and the exterior has absolutely zero rust. MPGs are going to be bullocks, but if I can do a few things to squeeze out 3-4mpg that'd be great (The last thing that would make this truck PERFECT would be if it were the 6.2 Diesel!). I know for a fact that I will be upping the tire size 1-2 (but not raising the height) sizes - is the speedometer adjustable to compensate? I don't know what gears the rear end has and I don't know if it's the three or four speed transmission.


      The A/C also doesn't work, which is rightfully so as I'd need to convert it to R134 anyway. How much would the conversion (compressor, lines, any other defunct part) run me if I did the work myself (minus evac/recharge)?


      The motor definitely needs a full tune up (plugs, wires, cap, rotor, oil, filters... everything), and I'm even looking into seeing how much it would cost to swap in a 6.2 diesel. The car will be 25 years old, officially in January of 2013, so there will be no more emissions inspection for it. I'm thinking catless pipes with resonators? Helping the flow should help mileage 1 or 2, in addition to some headers. What about adjusting the timing with the addition to a higher octane? What about a whole new 350 TBI?


      So... tell me, what are the good sides and bad sides to this generation of Suburban? What should I do to the motor knowing it's been sitting a while, besides the obvious tune up? What can I do to squeeze a few single-digit MPGs out of it? Or power, even? Rear end? What else should I do to this tank, while keeping in mind that it is going to be my hauler/grocery-getter/cruiser (GTI for all trips over 5 miles )?


      Here's a few pictures for your troubles. I take delivery on Monday.











      '87 Volvo 740 w/ LS Swap | '87 Crown Vic | '99 Explorer Sport | '86 Crown Vic (non-running)


    2. Geriatric Member BRealistic's Avatar
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      09-30-2012 02:49 AM #2
      Last edited by BRealistic; 09-30-2012 at 03:01 AM.
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      09-30-2012 02:49 AM #3
      If it's an 88 it should be TBI. Look for an adapter plate or an aftermarket intake manifold.

      My guess is it has a 700R4, which is a 4 speed transmission. Increasing tire size while trying to get more MPGs sounds very contradictory.

      A/C should be easy - I'd guess less than $500.

      Motor swap is probably not worth it, unless the motor that's in the truck is just too tired.

    4. Member mm3's Avatar
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      09-30-2012 02:56 AM #4
      Doesn't load for me?

      Quote Originally Posted by personman View Post
      If it's an 88 it should be TBI. Look for an adapter plate or an aftermarket intake manifold.

      My guess is it has a 700R4, which is a 4 speed transmission. Increasing tire size while trying to get more MPGs sounds very contradictory.

      A/C should be easy - I'd guess less than $500.

      Motor swap is probably not worth it, unless the motor that's in the truck is just too tired.
      It very well could be TBI, and now that I've looked on Google, it appears that it is. Derp on my part.

      As far as increasing tire size - increasing the tire size (assuming it's 3.73 gears and not 3.41, where it won't tire out the transmission) should increase MPGs slightly by having a slightly lower RPM at speed, no?

      Good to hear about A/C, hope it's somewhere under $400 .

      And I was mostly kidding about a motor swap, unless a crate 350 TBI is cheaper (or close enough to) than the work it needs.
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    5. Member personman's Avatar
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      09-30-2012 03:01 AM #5
      Quote Originally Posted by mm3 View Post
      Doesn't load for me?



      It very well could be TBI, and now that I've looked on Google, it appears that it is. Derp on my part.

      As far as increasing tire size - increasing the tire size (assuming it's 3.73 gears and not 3.41, where it won't tire out the transmission) should increase MPGs slightly by having a slightly lower RPM at speed, no?

      Good to hear about A/C, hope it's somewhere under $400 .

      And I was mostly kidding about a motor swap, unless a crate 350 TBI is cheaper (or close enough to) than the work it needs.
      Wait... did suburbans of that vintage have front and rear a/c? If so, it might be a bit more expensive.

    6. Geriatric Member BRealistic's Avatar
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      09-30-2012 03:04 AM #6
      Quote Originally Posted by mm3 View Post
      Doesn't load for me?
      Really? odd.. ok, this one is is same but just page by page.
      http://www.superchevy.com/technical/..._engine_build/

      As far as maximizing fuel economy.... WHY DID YOU BUY A 25 YEAR OLD SUBURBAN IS YOU CARE ABOUT FUEL ECONOMY?!?!?!?!?!?!?

      Sorry.... just had to get that out.

      It does look like a clean example- and these are tough vehicles (as long as you keep the rust out of the floors and rocker panels).

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    7. Member mm3's Avatar
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      09-30-2012 03:25 AM #7
      Quote Originally Posted by personman View Post
      Wait... did suburbans of that vintage have front and rear a/c? If so, it might be a bit more expensive.
      Yes, it has front and rear. But I'm content with just having the front A/C work.

      Quote Originally Posted by BRealistic View Post
      Really? odd.. ok, this one is is same but just page by page.
      http://www.superchevy.com/technical/..._engine_build/


      As far as maximizing fuel economy.... WHY DID YOU BUY A 25 YEAR OLD SUBURBAN IS YOU CARE ABOUT FUEL ECONOMY?!?!?!?!?!?!?

      Sorry.... just had to get that out.

      It does look like a clean example- and these are tough vehicles (as long as you keep the rust out of the floors and rocker panels).

      2wd or 4wd?
      Got it. Had to load it in Internet Explorer, Chrome didn't like it o_O.

      And @ fuel economy. I'm not saying that "zomg I must have 25mpg! Halp me get thar!" by any means , just wondering what little odds and ends I can do as every extra mile per gallon will soften the blow on my wallet .

      And yep yep- the complete lack of rust anywhere on the vehicle was the hook for me to buy it, my grandfather had an '84 which he ended up giving away in '00 because the rust had eaten through the frame . His was baby blue, but had all the fancy options that this one has. Should've seen the nostalgia hit him hard when I showed him the pictures of it.

      It's 2WD .
      '87 Volvo 740 w/ LS Swap | '87 Crown Vic | '99 Explorer Sport | '86 Crown Vic (non-running)


    8. 09-30-2012 03:30 AM #8
      Quote Originally Posted by mm3 View Post
      As far as increasing tire size - increasing the tire size (assuming it's 3.73 gears and not 3.41, where it won't tire out the transmission) should increase MPGs slightly by having a slightly lower RPM at speed, no?
      No. The bigger tires will cover more distance per revolution, but the engine is working harder to turn the wheels now that they have a larger diameter. This means you will be opening the throttle slightly farther at any given speed, which uses more gas.

      If you meant two sizes wider, then I'm not sure what effect it would have on gas mileage.

    9. Member mm3's Avatar
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      09-30-2012 03:37 AM #9
      Quote Originally Posted by slippinclutch View Post
      No. The bigger tires will cover more distance per revolution, but the engine is working harder to turn the wheels now that they have a larger diameter. This means you will be opening the throttle slightly farther at any given speed, which uses more gas.

      If you meant two sizes wider, then I'm not sure what effect it would have on gas mileage.
      Gotcha - so, what about a taller rear end?
      '87 Volvo 740 w/ LS Swap | '87 Crown Vic | '99 Explorer Sport | '86 Crown Vic (non-running)


    10. Geriatric Member BRealistic's Avatar
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      09-30-2012 03:39 AM #10
      Quote Originally Posted by slippinclutch View Post
      No. The bigger tires will cover more distance per revolution, but the engine is working harder to turn the wheels now that they have a larger diameter. This means you will be opening the throttle slightly farther at any given speed, which uses more gas.
      Simply put- No.
      Note at any given speed in the same gear the engine will be at a lower rpm.
      Why do you think overdrive uses less gas when you have to give it much more throttle to maintain speed?

      One rule of internal combustion engines is they are more efficient (at getting mechanical energy from the gas used) at closer to wide open throttle.
      So a lower rpm with more throttle is actually more efficient than a higher rpm with less throttle.


      On the other hand- the effect to stop and go around town fuel economy is not so easy to calculate. This is where the heavier larger diameter tires will hurt performance, but not sure on economy.
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      09-30-2012 03:46 AM #11
      Quote Originally Posted by BRealistic View Post
      Simply put- No.
      Note at any given speed in the same gear the engine will be at a lower rpm.
      Why do you think overdrive uses less gas when you have to give it much more throttle to maintain speed?

      One rule of internal combustion engines is they are more efficient (at getting mechanical energy from the gas used) at closer to wide open throttle.
      So a lower rpm with more throttle is actually more efficient than a higher rpm with less throttle.


      On the other hand- the effect to stop and go around town fuel economy is not so easy to calculate. This is where the heavier larger diameter tires will hurt performance, but not sure on economy.



      Performance I'm not worried about, really. I plan on driving it like the land barge it is, slow and calm.
      '87 Volvo 740 w/ LS Swap | '87 Crown Vic | '99 Explorer Sport | '86 Crown Vic (non-running)


    12. 09-30-2012 03:49 AM #12
      Quote Originally Posted by BRealistic View Post
      Simply put- No.
      Note at any given speed in the same gear the engine will be at a lower rpm.
      Why do you think overdrive uses less gas when you have to give it much more throttle to maintain speed?
      .
      How do the larger tires allow the engine to spin slower at a given speed? I'm genuinely curious, I've never bothered reading about bigger tires, because I don't have a truck.

      I'm just going by what my teacher in my suspension/alignment class told us. He didn't get very specific, but basically said bigger tires = worse economy because the tires are harder to spin due to weight and size.

    13. Member mm3's Avatar
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      09-30-2012 03:51 AM #13
      Quote Originally Posted by slippinclutch View Post
      How do the larger tires allow the engine to spin slower at a given speed? I'm genuinely curious, I've never bothered reading about bigger tires, because I don't have a truck.

      I'm just going by what my teacher in my suspension/alignment class told us. He didn't get very specific, but basically said bigger tires = worse economy because the tires are harder to spin due to weight and size.
      He'd be correct if the RPMs stayed the same, and it's a general rule, sure, as more weight and size is more rolling resistance. But, the effect of a larger sized tire causing the engine to spin at a lower RPM will overrule the slight loss from rolling resistance.
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      09-30-2012 03:52 AM #14
      Quote Originally Posted by mm3 View Post



      Performance I'm not worried about, really. I plan on driving it like the land barge it is, slow and calm.
      The best thing to do with a used vehicle is make sure everything is as good as it can be.
      Your Suburban should be 11-17 mpg in stock form.
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      09-30-2012 05:47 AM #15
      Quote Originally Posted by BRealistic View Post
      The best thing to do with a used vehicle is make sure everything is as good as it can be.
      Your Suburban should be 11-17 mpg in stock form.
      This.

      And be thankful that it ISN'T the 6.2d.

    16. Member mm3's Avatar
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      09-30-2012 09:59 AM #16
      Quote Originally Posted by BRealistic View Post
      The best thing to do with a used vehicle is make sure everything is as good as it can be.
      Your Suburban should be 11-17 mpg in stock form.


      Quote Originally Posted by Tornado2dr View Post
      This.

      And be thankful that it ISN'T the 6.2d.
      Oh? Go on
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      09-30-2012 10:22 AM #17
      Quote Originally Posted by Tornado2dr View Post
      This.

      And be thankful that it ISN'T the 6.2d.
      QFT. The people who wish for the 6.2 are people who have not driven, worked on, or owned a 6.2.

      I learned to drive on an '84 4x4 6.2d Suburban. On a left turn arrow across a wide road, you had to punch the throttle while the light was still red in order to clear the intersection during the green cycle. And they are NOT cheap to keep running in most instances.
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      09-30-2012 11:01 AM #18
      Quote Originally Posted by ArmenB View Post
      QFT. The people who wish for the 6.2 are people who have not driven, worked on, or owned a 6.2.

      I learned to drive on an '84 4x4 6.2d Suburban. On a left turn arrow across a wide road, you had to punch the throttle while the light was still red in order to clear the intersection during the green cycle. And they are NOT cheap to keep running in most instances.
      Insight is appreciated. I was looking at early 90s IDI Ford diesel pickups before I settled on the Suburban... I hear those are just as ungodly slow .


      If money were no object, I'd probably throw a crate Cummins in with a newer transmission and call it a day.
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      09-30-2012 11:27 AM #19
      it is a TBI. Look up your RPO codes, either under the hood, or on the glovebox door (yours is an 88 so should be on the glovebox door) and that will tell you all the options. write them down and enter here. http://lonestarthunder.com/m_rpo.php

      The trans will be a 700R4, and trucks were a heavier duty "K" case which means thicker case, cars were different. They do not put up with abuse very well though. Your axle is likely a 10 Bolt, which is the bottom level axle, also does not put up with abuse.

      TBI is easy, base gaskets leak, EGR valves stick, throttle sensors give bad messages when worn, and the ignition module and coolant temp senders are troublesome, especially at this age.

      If you are thinking of swapping in a 6.2, just take out a gun and shoot yourself in the foot. That was a bastard motor. Period. You can make that small block run so much better, with way more torque for a lot less hassle. If its diesel you are after, Duramax is the way to go if you can swing it but I would leave a 6.2 to its duties as a boat anchor. Only decent ones I've seen have the rare BANKS kit.

      Rust is the killer here. If the shell is solid, great. They rust in the floors, around the glass in the front, rockers and wheel arches. Burbs also like to rust by the back of the side windows. All patch panels are cheap and easy to get.

      Repop parts are plentiful and cheap. Look at LMC truck, and Classic industries. Used parts are also plentiful, GM made MILLIONS of these things.

      Here are two of my old trucks.... I wish I still had them both.



      Last edited by mikes96GTI; 09-30-2012 at 11:30 AM.
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    20. Member mm3's Avatar
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      09-30-2012 11:53 AM #20
      Quote Originally Posted by mikes96GTI View Post
      it is a TBI. Look up your RPO codes, either under the hood, or on the glovebox door (yours is an 88 so should be on the glovebox door) and that will tell you all the options. write them down and enter here. http://lonestarthunder.com/m_rpo.php

      The trans will be a 700R4, and trucks were a heavier duty "K" case which means thicker case, cars were different. They do not put up with abuse very well though. Your axle is likely a 10 Bolt, which is the bottom level axle, also does not put up with abuse.

      TBI is easy, base gaskets leak, EGR valves stick, throttle sensors give bad messages when worn, and the ignition module and coolant temp senders are troublesome, especially at this age.

      If you are thinking of swapping in a 6.2, just take out a gun and shoot yourself in the foot. That was a bastard motor. Period. You can make that small block run so much better, with way more torque for a lot less hassle. If its diesel you are after, Duramax is the way to go if you can swing it but I would leave a 6.2 to its duties as a boat anchor. Only decent ones I've seen have the rare BANKS kit.

      Rust is the killer here. If the shell is solid, great. They rust in the floors, around the glass in the front, rockers and wheel arches. Burbs also like to rust by the back of the side windows. All patch panels are cheap and easy to get.

      Repop parts are plentiful and cheap. Look at LMC truck, and Classic industries. Used parts are also plentiful, GM made MILLIONS of these things.

      Here are two of my old trucks.... I wish I still had them both.





      Will look into those RPO codes immediately!

      Transmission and rear-end don't put up with abuse... got it. That said, if I needed a replacement for either one in the future, finding one should be non-issue and cheap - from what I've come to understand, anyway.

      Okay okay! 6.2 is out! haha - I didn't do my research on the 6.2, I just thought to myself "ZOMG DIESEL". A swap to a Durmax (or any motor) would probably too much money and work for what it's worth... and yeah, I can definitely work with the existing 350, even if I have to rebuild it later.

      The one thing I DID do before pulling the trigger on this truck is research the rust spots, ALL of which were completely rust-free!

      Looking forward to finally owning a vehicle that is both easy to work on and cheap to maintain.
      '87 Volvo 740 w/ LS Swap | '87 Crown Vic | '99 Explorer Sport | '86 Crown Vic (non-running)


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      09-30-2012 11:54 AM #21
      My uncle had one for well over a decade. He finally retired it and got a 800 series. That thing was a tank though.
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      09-30-2012 12:24 PM #22
      My dad had an '88 C2500 with the same drivetrain.

      Trans lasted til about 140k when the fluid started turning black and smelling burnt/fishy. Flushed it and it morphed back to black/burnt within a couple thousand miles, and O/D wasn't engaging correctly. He had an uprated rebuild installed (shift kit, upgraded internals, beefier torque converter) and that decided not to shift out of first after about 30k miles. Not a huge fan of that trans.

      That motor is NOTORIOUS for leaky valve stem seals. Dad's truck started blowing blue smoke on cold start around 20k miles. Dealer redid the heads on it, but by 100k it was doing it again. He just ignored it and added oil thereafter.

      That motor only had about 210hp stock, so don't expect much performance from it. As stated, many components related to the TBI can fail, causing poor performance...the gaskets, injectors, and coolant temp/throttle sensor all went in dad's truck over time. They're kind of a PITA to diagnose.

      The Suburban is a very old chassis design, so parts should be plentiful.

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      09-30-2012 12:31 PM #23
      Quote Originally Posted by mm3 View Post
      Insight is appreciated. I was looking at early 90s IDI Ford diesel pickups before I settled on the Suburban... I hear those are just as ungodly slow .


      If money were no object, I'd probably throw a crate Cummins in with a newer transmission and call it a day.
      Ah, it's not that bad. It's a diesel V8 and is incredibly simple to work on. I wouldn't bother swapping one in, but it's totally livable. I've never driven a 4x4 version with a diesel and I could see that sapping a lot of the power, but in 2wd guise I thought it was fine.
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      09-30-2012 12:34 PM #24
      Man, haven't seen a rust free Suburban of this generation in a while. BTW I just found this (below) on CL the other day. It belongs to someone I went to high school with and I want to know how rare is the Silverado trim for the Suburban?

      http://grandrapids.craigslist.org/cto/3261141595.html

      1975 chevy suberban - $2000 (forest hills)

      runs great 4 speed new clutch and flywheel looking to get 2,000 obo

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      09-30-2012 12:36 PM #25
      As far as it having a carburator, GM had a few models that could be ordered with carbs after the switchover.

      My grandfather had a Caprice Classic that he ordered with a carbed 305 instead of the fuel injected 350 because he was an old timer and didn't like all the new "electronic junk". I think it was an '87 or '88. He also had a 1 Ton pickup around that same year that was a carbed 454 with no catalytic converters on it because of some off road loop-hole. It had spark arrestors on the tail-pipes instead.

      So..point of all that is it may not be impossible that it's carburated. If it is, it's probably rare and was ordered that way likely by someone like my Grandfather.

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      09-30-2012 12:42 PM #26
      Quote Originally Posted by Geechie_Suede View Post
      Man, haven't seen a rust free Suburban of this generation in a while. BTW I just found this (below) on CL the other day. It belongs to someone I went to high school with and I want to know how rare is the Silverado trim for the Suburban?

      http://grandrapids.craigslist.org/cto/3261141595.html
      You should buy that. That is super ballin'
      77 F100, 83 244, 94 540i

    27. Member Robski92's Avatar
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      09-30-2012 12:55 PM #27
      They look mean to me.

    28. Member ownerizer's Avatar
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      09-30-2012 01:00 PM #28
      This shouldn't be hard to work on at all. I love the ease of working on older vehicles. I wonder if a 4BT would have enough oats to pull that thing around and still get fair fuel mileage.

      My pile:


      Turns out my '53 Cadillac is only 4 inches shorter than your Suburban. I can fit it in the garage. Barely.

    29. Global Moderator Justin's Avatar
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      09-30-2012 01:41 PM #29
      My parents had three of them when I was growing up first one had the 454 option in it, that thing was a beast, got about 5-6 mpg. Dad had an extra tank installed so he didn't have to fill up every time he drove. Then he had a few of the 350 versions, he had over 250k on his last one before trading it and it never had a major problem. However, my Dad is very good at maintaining vehicles such as fluid flushes and installed tranny coolers on all of them before it left the lot. Hell his Escalade fishing mobile has 260k on it, looks and drives brand new. Only major work was he rebuilt the tranny and that was only after loaning it to my brother for 3 months of abuse.
      Current fuel suckers:2013 Ford Raptor, 2002 Ford F-350 'stoke, 2010 Chevy Equinox monkey hauler, 1995 BMW M3 track project, 1962 Mercury Monterey the never ending project.

      Past fuel suckers. Signature would violate forum rules

    30. Member miatafreak's Avatar
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      09-30-2012 01:56 PM #30
      I grew up in a two tone creme/navy blue 89 Suburban. That thing was awesome. I can remember being really disappointed at the lack of bench seats up front when we switched to an 01 Suburban. Our neighbors had one of the same generation, and I want to say it rolled 250-300k before the original transmission gave out and they got rid of it.

    31. Geriatric Member BRealistic's Avatar
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      09-30-2012 03:10 PM #31
      Quote Originally Posted by mm3 View Post
      Insight is appreciated. I was looking at early 90s IDI Ford diesel pickups before I settled on the Suburban... I hear those are just as ungodly slow .
      .
      Don't be bashing the 7.3 IDI.
      Slow is relative.
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      09-30-2012 03:12 PM #32
      I drove a 87 2wd 350 for years. Had the 2.73:1 ratio in it. even with those gears and overdrive, best i got was a hand calculated 13mpg. It was tuned right, fresh synthetic fluids, 91 octane. No AC as it didn't work.

      The lines going to the rear AC unit are expensive. 400 expensive.

      The thing you really need to do its go to napa and get a AC reseal kit. That is what you need to get done for the r134 conversion.

      Solid beasts. My mom got into 2 head on accidents with drunks and walked away unscathed. Suburban didn't do well but the other cars were gone.

      Sent from my DROID RAZR using Tapatalk 2

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      09-30-2012 04:17 PM #33
      I too have fond childhood memories of my mother's '91 Suburban. It was probably a 1500, I'd imagine. We used to drive from Columbus, Ohio to Montclair, NJ to Shelter Island, NY to Sunapee, New Hampshire every summer. We'd fold the middle row down and spread out blankets and my brothers and I got to play with Legos and GI Joes in our rolling living room.

      She got a '98 and we thought it was lame by comparison.
      Quote Originally Posted by Mach700 View Post
      In the absence of Wars, people become lazy and sex slaves (not everybody).

    34. Member mm3's Avatar
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      09-30-2012 05:07 PM #34
      Quote Originally Posted by Numbersix View Post
      My dad had an '88 C2500 with the same drivetrain.

      Trans lasted til about 140k when the fluid started turning black and smelling burnt/fishy. Flushed it and it morphed back to black/burnt within a couple thousand miles, and O/D wasn't engaging correctly. He had an uprated rebuild installed (shift kit, upgraded internals, beefier torque converter) and that decided not to shift out of first after about 30k miles. Not a huge fan of that trans.

      That motor is NOTORIOUS for leaky valve stem seals. Dad's truck started blowing blue smoke on cold start around 20k miles. Dealer redid the heads on it, but by 100k it was doing it again. He just ignored it and added oil thereafter.

      That motor only had about 210hp stock, so don't expect much performance from it. As stated, many components related to the TBI can fail, causing poor performance...the gaskets, injectors, and coolant temp/throttle sensor all went in dad's truck over time. They're kind of a PITA to diagnose.

      The Suburban is a very old chassis design, so parts should be plentiful.
      The majority of this makes me a little concerned, but I suppose I know what to check first if problems start to arise.

      Quote Originally Posted by Geechie_Suede View Post
      Man, haven't seen a rust free Suburban of this generation in a while. BTW I just found this (below) on CL the other day. It belongs to someone I went to high school with and I want to know how rare is the Silverado trim for the Suburban?

      http://grandrapids.craigslist.org/cto/3261141595.html
      Beautiful.

      Quote Originally Posted by justanotherusername View Post
      As far as it having a carburator, GM had a few models that could be ordered with carbs after the switchover.

      My grandfather had a Caprice Classic that he ordered with a carbed 305 instead of the fuel injected 350 because he was an old timer and didn't like all the new "electronic junk". I think it was an '87 or '88. He also had a 1 Ton pickup around that same year that was a carbed 454 with no catalytic converters on it because of some off road loop-hole. It had spark arrestors on the tail-pipes instead.

      So..point of all that is it may not be impossible that it's carburated. If it is, it's probably rare and was ordered that way likely by someone like my Grandfather.
      Interesting story! While having a 454 or 400 motor would be cool, I don't think I'd have been able to handle the mileage .

      Quote Originally Posted by ownerizer View Post
      This shouldn't be hard to work on at all. I love the ease of working on older vehicles. I wonder if a 4BT would have enough oats to pull that thing around and still get fair fuel mileage.

      My pile:


      Turns out my '53 Cadillac is only 4 inches shorter than your Suburban. I can fit it in the garage. Barely.
      Hah. My GTI BARELY fits in the garage. Suburban can fit about half, I reckon .

      Quote Originally Posted by Justin View Post
      My parents had three of them when I was growing up first one had the 454 option in it, that thing was a beast, got about 5-6 mpg. Dad had an extra tank installed so he didn't have to fill up every time he drove. Then he had a few of the 350 versions, he had over 250k on his last one before trading it and it never had a major problem. However, my Dad is very good at maintaining vehicles such as fluid flushes and installed tranny coolers on all of them before it left the lot. Hell his Escalade fishing mobile has 260k on it, looks and drives brand new. Only major work was he rebuilt the tranny and that was only after loaning it to my brother for 3 months of abuse.


      Quote Originally Posted by miatafreak View Post
      I grew up in a two tone creme/navy blue 89 Suburban. That thing was awesome. I can remember being really disappointed at the lack of bench seats up front when we switched to an 01 Suburban. Our neighbors had one of the same generation, and I want to say it rolled 250-300k before the original transmission gave out and they got rid of it.


      Quote Originally Posted by BRealistic View Post
      Don't be bashing the 7.3 IDI.
      Slow is relative.
      I wasn't bashing it - I wanted one!

      Quote Originally Posted by dodger21 View Post
      I drove a 87 2wd 350 for years. Had the 2.73:1 ratio in it. even with those gears and overdrive, best i got was a hand calculated 13mpg. It was tuned right, fresh synthetic fluids, 91 octane. No AC as it didn't work.

      The lines going to the rear AC unit are expensive. 400 expensive.

      The thing you really need to do its go to napa and get a AC reseal kit. That is what you need to get done for the r134 conversion.

      Solid beasts. My mom got into 2 head on accidents with drunks and walked away unscathed. Suburban didn't do well but the other cars were gone.

      Sent from my DROID RAZR using Tapatalk 2
      That's a bit disconcerting. Although, maybe with the 2.73 gearing, the motor had to work too hard? Maybe 3.41s with slightly larger tires will be the trick... here's hoping that the rear end isn't 4.xx+!

      Anyone know how/if these speedometers can be easily adjusted?

      Quote Originally Posted by The Igneous Faction View Post
      I too have fond childhood memories of my mother's '91 Suburban. It was probably a 1500, I'd imagine. We used to drive from Columbus, Ohio to Montclair, NJ to Shelter Island, NY to Sunapee, New Hampshire every summer. We'd fold the middle row down and spread out blankets and my brothers and I got to play with Legos and GI Joes in our rolling living room.

      She got a '98 and we thought it was lame by comparison.
      '87 Volvo 740 w/ LS Swap | '87 Crown Vic | '99 Explorer Sport | '86 Crown Vic (non-running)


    35. Member personman's Avatar
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      09-30-2012 06:25 PM #35
      Quote Originally Posted by mm3 View Post
      Anyone know how/if these speedometers can be easily adjusted?
      I think with an 88 you should still have a mechanical speedo.

      http://www.transmissioncenter.net/sp...n_______va.htm

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