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Bloverlanding 86 Blazer

superbuickguy

1/2 ton status
Joined
Mar 6, 2017
Posts
663
Reaction score
860
Location
Kennewick Washington
Hi. Long time watcher, first time talker... well, maybe not, I've built all sorts of squares... Is another deposited here? I dunno. But I digress. I like car camping... err.. Overlanding (wow, don't I sound special now?) I've built LOTS of them and this one is kind of the one-to-rule-them all. I've had all manner of 'regular' campers but they have 2 problems, 1) they're way too big, and 2) to use them means to go near other people.... which, to me, the point of getting away is to actually not go to some parking lot with a green swimming pool (I'm looking at you Yosemite)...
so first car camper was my H3 Hummer Alpha. I loved that thing for everything BUT camping. the rear sear folds but not flat - so you can't camp in it, thus
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it worked, but at the time I had a Mastiff that couldn't get on top with me (200 lb dog), and was terrified to be in the annex - so he'd be inside, away from me and very concerned about lift... he'd move. A lot... I should have brought Dramamine.
So next was a square. a 85 ATS turbo diesel suburban.
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it worked well and pulled this just fine
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we travel a lot for dogs - my wife is a nationally certified man-tracker who uses bloodhounds as her weapon of choice (and no, I don't get away with anything)... the 85 was our only transportation for those events and simply not comfortable for her to drive. So I got this a 94 TD 'burb
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which I still have. All of these rigs had places to sleep, and the suburbans all have running water and engine-off heat (diesel heater). They also get my portable refrigerator and some method of cooking. The problem is I want to stand up inside... I also use a class A to go to race tracks with this beast
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I don't need class a room. Also, portapotties are just fine when camping with others - and I have a shovel for the other times. But being able to eat inside with air conditioning and away from bugs would be nice.
I also like Chalet campers but we can do so much better now. Overland campers are pretty sweet, heated, a/c'd, light, well insulated, with water and a shower, and with all the amenities of home (including a cassette toilet)... all in a 6' overhead camper package. Which is what I'm going to build. Whether I show that portion of the build is an open question.

But for now. Say hello to the new hotness
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it's not stolen so maybe hotness is a bit bold... but I have plans
It's a 1986 diesel blazer. I like the 6.2/6.5 and think they're a great fit-for-purpose motor. They get good mileage, can be one-wire operation, are reliable, inexpensive, and sound awesome (detroit diesels :) ) They are not race motors, they are not a semi motor, they are not going to win any competition, however, go back to the great mileage. The 94 suburban has a few mods, a 'stock' cummins 5.7 turbo, I've fooled the PCM into thinking it isn't getting 12 psi of boost, PCM has been relocated and it's probably 280 hp and 400 ft. lb torque. all while getting 15-17 mpg. 13 towing. I wish the Corvette got that kind of mpgs.... There are things, more, that I could do to that 250,000 mile motor but the truck cost me $300 and the motor $1200 - so I'm not going to. It's reliable.

But I do want 18 psi and 350 hp/525 ft lb torque. To do that requires head studs, better head gasket, and a better harmonic balancer (along with the cummin's turbo).
As start to this, I bought a 34,000 mile motor out of a 1999 H1 Hummer. It's not the Optimizer motor, but it's good enough for my plans. The biggest fail of the 6.2/6.5 is people severely overheat them - and when you do that, it's pretty much game over. GM fixed the cooling problem with a far better pump, add to that I'll add a better radiator and this should all be fit for purpose.

I haven't mentioned transmissions because I have options. a NV4500 or 4L80e... the motor came with a 4L80e but my first love is gear rowing - so I may convert it to manual.

as far as suspension. Rear will be boring leaf springs, front will be radius arm with coil springs. The FJ40 pictured above is fully linked and fully built by me. The Corvette above has a C5 front suspension and 5th gen Camaro rear.... all done by me. I know a couple things about building suspensions that work. I say that not to brag but to plead that the self-appointed experts just enjoy the entertainment of this build. Not saying there are any here, but just sayin'.... shush.

As far as axles, I have a dana 60 front and corporate 14 bolt rear
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4.56 gear, LS front, detroit locker rear (which I may change, long long ago I had the same locker in the rear of a 74 Blazer on 44s... I swapped ends going down a wet hill on the freeway - not looking forward to a repeat of that.
as far as tires... something in the 38 range.. probably 37s and likely the toyo's that are currently on the FJ40. I don''t like them as a wheeling tire, and will go back to Swamper SXs or something similar.... but they would work great for what I'm doing here.

Interior is going to be stock plus (heated seats but all done to stock interior)
outside is going to be repainted in the same colors....

anyway, hello. Questions?
 
Had me at camper…. Lost me a the 6.2/6.5 oil burner. But I get the reasoning. I’m spoiled with big block torque though so I may be biased. That and I like to drive at the speed limit on mountain grades.

Are you building the camper or buying one from Ovrlnd campers?

They built a badass camper on a full size bronco (oj style). I met them at Overland expo in Colorado and they were cool to talk to. Though willing to do another custom they giggled that it was going to be expensive.
 
Had me at camper…. Lost me a the 6.2/6.5 oil burner. But I get the reasoning. I’m spoiled with big block torque though so I may be biased. That and I like to drive at the speed limit on mountain grades.

Are you building the camper or buying one from Ovrlnd campers?

They built a badass camper on a full size bronco (oj style). I met them at Overland expo in Colorado and they were cool to talk to. Though willing to do another custom they giggled that it was going to be expensive.
it's all good, dumbest thing I ever did was replace a 6.2 with a 383, it wasn't any faster empty and loaded - the 6.2 would outrun it (all while getting double the mpg empty or loaded).... if I had only added a turbo to the 6.2.... I seriously considered an 8.1 swap, but one-wire-running was the proverbial point which made up my mind. That said, nothing is slower in the mountains then my 454 powered Class A.

as for camper, I'm building my own
 
lots of parts arriving.
I want an emergency brake so I bought Cadillac calipers
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installed
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most of the parts for the front is now here.... I have lots of spares from the '40 build so, thankfully, I won't be waiting for what I forgot
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waiting on 6" softride rears.... bright side is I can pretty much disassemble the motor/trans and put the truck at a reasonable work height now... and that is next - engine out along with the front disassembly. while this doesn't have rust, the inner fenders are not in good shape - so I'll take advantage of having great access and change those now.
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did a strength test on the vent tube.... surprisingly, it doesn't have much strength
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and it's made it....yay?
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with a 4L80e, that I'm probably not going to use
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good thing I bought insurance
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a lot of the accessories, I'm not going to use, mostly because it's 24 volt but also having the turbo in the middle makes putting an intercooler on it difficult. Mind you, I have enough parts to build a motor plus accessories and stuff for 2 others. This isn't a big deal. One thing for certain, I am going to figure out how the PCM works and replaces it with a rasberryPi... I bandaided my 94 suburban motor (e.g. the rheostat to fool the sensor that it's not being overboosted)
in other news, 2wd steering box and arm are here
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Time to get it on a stand and evaluate - there was freight damage.... to bring y'all up to speed
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yep, got the pan
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trans is fine, though.... still not sure I'm going to use it... my heart - manual. Plus, 5 speeds is better then 4 when using a diesel.
my shop lab approves
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as does my loaner bloodhound. In case you're curious, she's 8 months old and nearly 100 lbs...
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I honestly don't know how they did this...
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there's a witness mark on the a/c pump (top of the motor)... so maybe something heavy fell on it? I don't know
 
Love the build so far, I love my 6.2L K5. Good mileage and mechanical fuel injection without all the issues the gasser guys have converting to fuel injection and such. I'd like a turbo and a manual trans but it works how it is.
I probably missed it but are you going to run the valley mount turbo setup?
 
Love the build so far, I love my 6.2L K5. Good mileage and mechanical fuel injection without all the issues the gasser guys have converting to fuel injection and such. I'd like a turbo and a manual trans but it works how it is.
I probably missed it but are you going to run the valley mount turbo setup?
not running the valley turbo - I have several 'traditional' setups and will use those...
 
Love the build so far, I love my 6.2L K5. Good mileage and mechanical fuel injection without all the issues the gasser guys have converting to fuel injection and such. I'd like a turbo and a manual trans but it works how it is.
I probably missed it but are you going to run the valley mount turbo setup?
I've thrown my name in the GM hat for a crate 3.0 diesel.... not going to hold my breath, though.
I've done the EFI conversions. Did a TBI on my FJ40, then a FiTech with spark control (much better). My Corvette has as many electronics on the BBC as any LS (and I'm diving deeper there). I've run carb'd blowers, carb'd turbos, and all of it had reasons for the choices I made. I'm not drag racing this thing. I want torque, the ability to run at any angle, reasonable mpgs, and cheap-to-replace. The hate (some earned, some just silly) makes them less expensive than any other option.

Now I'll recount the whys/ pros/cons for my decision.
1) Cummins is both heavy and long. Not just that but their 'torque curve' is 200 rpm long. Heck, redline is 3200 rpm... and actually ends before that. With that said, they are a tough, reliable motor... but I'm not cutting the firewall to make it fit.
2) Duramax - wayyyyy too tall. Good motor, lots of solid options here but they're also really expensive to actually get running in anything outside of what they came in
3) Ford. No. Never.
4) SBC - I've had 400s and I really liked them, okay power, great torque 9 mpg or worse towing.
5) BBC - including the 8.1. I have never felt that a stock BBC is really worth talking about. Their sales pitch is always "slightly more torque then a 350"... the 8.1 is kind of an exception but it's such a niche motor that it's already obsolete and difficult to find parts for.
6) 6.2/6.5 Detroit diesel. As long as you don't overheat them, they really do fit the purpose. Sure, you can break a crank if you don't upgrade the harmonic balancer and head studs are mandatory if you're going to pull a lot with it or turn up the boost past 11 psi. I have a lot of experience with these motors - so that helps, but also they just recently stopped producing these motors (2016) and there are quite literally millions of them out there. Add to all of this the one-wire operation and the fact the fuel never goes 'bad'.... and finally about how slow they are... You climb from Issaquah Washington to Snoqualmie Summit and gain nearly 5000 feet in 12 miles. The last part of the climb - 3 or so miles, does 1/3rd of the elevation. Everything struggles hauling loads over it. I had a 83 diesel with an ATS turbo on it
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that would crest the pass in this configuration at 70 mph, my 454 powered motorhome crests the same pass at 40.
 
time to clean the front diff
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new gears, locker
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and clean the rear
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testing the new U-bolts.... I think I bought too long ones, but won't know before I get the springs
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test fit the cover.... both aren't perfect - so you need to be really careful running bolts in...
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why I use offset tie rod ends.... no clearance for steering if you don't
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most of these pictures are for future reference
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seriously considering a canvas sliding top
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more stripping parts
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and draining fluids... and yes, I drilled a hole in the pan...
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story time with SBG.... transmission coolers... add them. If it already has one, change the hoses the moment they get hard
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for those who don't know, I lost a transmission because an old line let loose
axles are cleaner
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and shiny baubles arrived
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still trying to figure out why the serpentine belt is loose... more damage from the freight company? dunno, thankfully I paid for insurance this time. I think they stacked something on top - which might have moved the a/c pump? I honestly don't know
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and knew about this
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and this
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mental note, bring wasp killer next time... I didn't look too closely at this side because there were 2, large mud dauber nests
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ah well, it could be far, far worse
 
install springs (lab approved)
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bloodhound approval too
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a bit of convincing necessary
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rear is a lot easier then the front
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line up axles
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the easy way to get things close
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time to start figuring this out
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only problem with this is the panhard would need to travel through the spring....
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ordered a different panhard bar mount... I looked at these - neat idea but way too complex for something I want to last 100k miles
how annoying, I'm going to have to look for the pictures on my travelling computer... sometimes things don't upload and other times the camera just simply doesn't take the picture... I probably took 20 pictures of the system because it's very complex but solves a problem that the SEMA trucks have... that is, they want variable height but be able to drive it whatever height...
this is the back of that system
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basically they replace the shackle with a part that expands but still works as a shackle... quite complex and fun engineering.... but I also don't hate the SEMA trucks. wouldn't own one but admire the tech and problem solving (which is the same as low riders trying to make hydraulics work and still have a suspension).... not my cup of tea but impressive no matter the style.
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this is what I'm copying
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except pumpkin is on the other side
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hog out the holes for larger bolts
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install ubolts
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test fit successful
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next up for the rear is going to be traction bars, but first I want to finish the front.... in that vein, waiting for parts...
and work on the 4 post lift... 6 hour assembly - must be because there are no instructions.... smh.
 
Springs... think they're from a F350 van... whatever, they're a good first start because I already have them
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got another top with sliding windows for it... cheap cheap
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and got the bracket today for the panhard the shifts it forward... waiting for the steering box before I put this together, but that should be here tomorrow...
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for those counting, I already bought a steering box... it's the wrong one, not sure what it fits but not this.... goes on the inside of the frame rail...
 
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