Georgia Trail Riders Forum
MEMBERS DISCUSSION AREA => General Discussion => Topic started by: Krawler00 on October 11, 2009, 07:10:16 PM
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Well, I finally got around to taking some pics of the new/old tow rig I got. Now I can park the Jeep and use it like I wanted to, for wheelin and occasional driving. This is a 1988 6.2 Diesel GMC Suburban. I actually found it right down the road from me on a little lot. I kept driving by it and looking but I finally stopped in to look and instantly wanted it. It is immaculate and has been well taken care of with 1 owner history! I have not towed with it yet but I will soon. It drives super smooth so far, no problems. I know some say the 6.2 diesels are not the best, but for what I am using it for I think it will do fine. Right now the MPGs are around 18-20. Not too shabby, considering the Jeep was around 10-12 ;D So far I have put a set of tires on it, still looking for bigger and better. Painted the grill satin black, touched up a few spots of paint and some fuses here and there. I have a list of things to do to it but right now money is tight. Any experts on these motors here? Trying to learn all I can. But anyway, here are the picks...
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{toast}
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Looks nice Ben... Are you going to flat tow or do you have a trailer??
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Looks good Ben, your 1/2 way to the RED club now. ;D
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Swap in a 6.5 and/or turbo it.
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been looking at the banks turbo kit. ;D I have access to a dolly so I will go that route till I can afford a trailer.
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Cool. Your mpg are about the same as my 6.6.
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I was amazed at the mileage being it is a huge vehicle. I can fit 9 people in this thing. :o I want to look into regearing as well. I think it has a 3.07 gear or something crazy like that. If so I am thinking of a 3.73 to pep it up a bit. Might loose a few mpgs but I can live with that.
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I was amazed at the mileage being it is a huge vehicle. I can fit 9 people in this thing. :o I want to look into regearing as well. I think it has a 3.07 gear or something crazy like that. If so I am thinking of a 3.73 to pep it up a bit. Might loose a few mpgs but I can live with that.
Careful with that. No overdrive and you only have 3000 rpm's or so to work with, and you don't want it screaming o the highway like my Waggy did.
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Nice find Ben. {toast} I see a stretch coming soon to the Jeep now. {letseat}
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I was amazed at the mileage being it is a huge vehicle. I can fit 9 people in this thing. :o I want to look into regearing as well. I think it has a 3.07 gear or something crazy like that. If so I am thinking of a 3.73 to pep it up a bit. Might loose a few mpgs but I can live with that.
Careful with that. No overdrive and you only have 3000 rpm's or so to work with, and you don't want it screaming o the highway like my Waggy did.
It has overdrive! No worries!
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holy crap that thing is clean. nice find ben. If you regear I wouldn't go above 3.55s...
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That thing is pimp! Porno red is the best interior color ever.
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Fish, I think your right. I just want a shade more in the power dept without having to mess with the motor! Jimmy, I knew you would like it! :D
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I was looking for a picture, but my Mustang had the same interior color except the seats were vinyl :D
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Just get the exhaust manifolds, turbo and intake manifolds from a 6.5L turbo. They bolt right up. You will gain a lot of power and be happy. You will need to turn the fuel up in the pump, too.
You have the old DB2 mechanical pump - be happy. You have not PMD/FSD to fail which is THE most common failure on the old Detroit 6.2/6.5s. Put the turbo stuff on and you will change your mind about regearing. I owned a 1995 Suburban 6.5L with 3.73s and it was too much gear for me...keep in mind my car hauler empty is 4400lbs and I towed two cars with my burb many times. The MPG is also low for those gears. I got 20mpg with mine - you should be near 27mpg or so. May need a new set of injectors. If you swap these go with some turbo or marine injectors.
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Man, I need to pick your brain on this one! Thanks for the tips! Anybody ever run a set of flowmasters on a 6.2 - 6.5? I have 2 3 chambered 40 series I want to put on it. Also, Is the bolt pattern on the wheels 5 on 5? I can't confirm the pattern on this thing and have found different answers. I measured the 1st lug and the 3rd distance and it was close to 4.75". But not precise with the wheel on. :)
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im not a fan of flowmasters in general let alone on diesels.
and yes, drew is a walking encyclopedia about diesels.
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Man, I need to pick your brain on this one! Thanks for the tips! Anybody ever run a set of flowmasters on a 6.2 - 6.5? I have 2 3 chambered 40 series I want to put on it. Also, Is the bolt pattern on the wheels 5 on 5? I can't confirm the pattern on this thing and have found different answers. I measured the 1st lug and the 3rd distance and it was close to 4.75". But not precise with the wheel on. :)
yes it is 5 on 5 for sure.
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I think diesels sound best with a straight pipe. Flows don't sound that good on a diesel.
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Not too bad! I will look into the straight pipes too.
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I think diesels sound best with a straight pipe. Flows don't sound that good on a diesel.
I think that goes for turbo diesels. It is best to have a straight thru design on turbo applications, chamber mufflers are a no no. With his truck being N/A. The flowmaster would probably be fine. Not sure how it would sound though.
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I think diesels sound best with a straight pipe. Flows don't sound that good on a diesel.
I think that goes for turbo diesels. It is best to have a straight thru design on turbo applications, chamber mufflers are a no no. With his truck being N/A. The flowmaster would probably be fine. Not sure how it would sound though.
agreed on the chambered mufflers. just cut the muflers out, see how it sounds and if you dont like it then put a glasspack in
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Lemme know if you want to part with the stock wheels/caps/rings. I've got an 81 2wd pickup I'm going through. It's got some aftermarket wheels and I'd like to put something more stock looking back on it.
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Funny you say that jeepin jon. I actually painted them black this afternoon but did not put the trim rings back on. I kinda like the black on it but I won't be keeping them much longer... hopefully! If you still want them although painted I can work out a deal. Let me know! The mufflers are going on next week. I have a set of 40 series 3 chambers from my Monte. It should sound pretty good, and flow much better!
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I didn't even notice that it was a 5 lug.
Please say no to flowmasters. They are indeed awful on turbo applications...they are equally as terrible on N/A stuff too. This is not just an opinion - it is a fact. I actually have dyno testing to prove it! Flowmaster gained 2hp over stock, dynomax ultraflow gained 10 hp and the most torque and a straight exhaust gained 12hp and more torque but not as much as the ultraflo. Since you are going for torque I would recommend some type of straight through muffler. They also do not drone and to me have the best sound.
Feel free to pick my mind about the thing...I did a lot of reading on them back when I owned my 6.5T. Also dieselplace.com and dieseltowingresource.com are the best 6.5L sites. Dieselplace has the best archives but most of the smart guys moved over to the other board.
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Drew, what is the difference in the mufflers? Baffling? Curious! I am not fond of straight pipes though. Sound too rednecky for me. But I am non turbo 6.2. Still think flows are bad? I was going to put them on monday. I will research!
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Please say no to flowmasters. They are indeed awful on turbo applications...they are equally as terrible on N/A stuff too. This is not just an opinion - it is a fact. I actually have dyno testing to prove it! Flowmaster gained 2hp over stock, dynomax ultraflow gained 10 hp and the most torque and a straight exhaust gained 12hp and more torque but not as much as the ultraflo. Since you are going for torque I would recommend some type of straight through muffler. They also do not drone and to me have the best sound.
They are called flowbastards or slowmasters for a reason! Dumped 2 chambers sound awesome behind a cammed 5.0 but thats about all they are good for.
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dem flowmasta just make me think a cutlis or caprice is about to drive by.
just my $0.02
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Drew, what is the difference in the mufflers? Baffling? Curious! I am not fond of straight pipes though. Sound too rednecky for me. But I am non turbo 6.2. Still think flows are bad? I was going to put them on monday. I will research!
x2 on the Dynomax Ultra Flow. Rednecks cant afford this (all stainless) bling. The guts are way different. They do not use chambers. They use fiberglass usually. The pipe just goes straight through the muffler. The flow is much better, diesel engines are high compression and need free flowing exhaust for the exhaust to escape quickly. Chambered mufflers do not allow this to happen efficiently.
Dynomax Ultra Flow
(http://www.dynomax.com/images/mufflers/muf_ultrass.gif)
Flowmaster
(http://ecx.images-amazon.com/images/I/41B857RN9SL.jpg)
Read this article. Very good.
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Matt you forgot the link.
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Matt, thanks, please post the link when you can. I am not sure what is on it now. I think stock but can't tell. Anybody need some 3 chamber flows? ;D
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Anybody need some 3 chamber flows? ;D
what are the inlet/outlet diameters?
how much?
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Can't remember off hand, I will check today. Brand new, maybe under tha car for 2000 miles.
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Funny you say that jeepin jon. I actually painted them black this afternoon but did not put the trim rings back on. I kinda like the black on it but I won't be keeping them much longer... hopefully! If you still want them although painted I can work out a deal. Let me know! The mufflers are going on next week. I have a set of 40 series 3 chambers from my Monte. It should sound pretty good, and flow much better!
Funny YOU say that! I was planning on painting them black anyway! No rush on them, we just found out we're pregnant with our first so there is lots to do around the house! I'll keep checking here and following your build of this thing. I have the same color interior and have always loved this bodystyle.
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Yeah, you got lots to do! Congrats to you and your wife! I will let you know about the wheels once I can get another set. {toast}
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my bad...
http://bankspower.com/techarticles/show/36-Airflow---The-Secret-To-Making-Power