Worlds Most Custom Square Body Turbo 6.2/6.5 Diesel

Since my last walk around video this old girl has had some serious upgrades done. I try to mention them all but forgot a few. (Listed Below)The truck responded perfectly fine to the addition of the Turbo. Minimum blow by and no hiccups or fuss while giving her the beans climbing a hill or speeding to 70. I have a massive amount of power and tourqe now with the Turbo and is like night and day from when it was naturally aspirated. The combination of the Super 60 w 4" side exhaust makes this truck the loudest on the road around. I have a few more upgrades and updates I want to do yet so she's not done having money thrown at her...which she loves...cause she's a whore lol Seriously though lots left to do.
Until next time you 6.2 & 6.5 Detroit Diesel & Square Body Lovers!
List Of Upgrades:
ARP Starter Bolts
ARP FlexPlate Bolts
ARP Studs @120ftlbs+ in a '81-'82 J Code, LL4 Red Block
Ported & Polished Promaxx 6.5 Turbo Diesel Heads w 81-82 Cast Rocker Arms & Stock 6.5 Bosch Injectors utilizing the bigger 81-82 Fuel Injection Lines
Ported & Polished 6.5 Turbo Intake Manifold
Coated, Wrapped, Ported & Polished 6.5 Turbo Exhaust Manifolds
Polished Quadstar High Flow Intake Plenum w Water Meth/ Nitrous Port added
Quadstar Super 60 Turbocharger @ 21 PSI
Holset HX Turbo Downpipe Adapter
Wrapped 4" Side Dump Mandrel Bent Turbo Exhaust Downpipe
Quadstar Billet Compressor Coupler
KB Diesel 6.5 Exhaust Stud Kit
2.5" Diamond Eye Crossover Pipe
Fluidampr Harmonic Balancer
Diesel Site/ Quadstar Billet Coolant Filter Kit
Mishimoto Oil Thermostat (185°)
Mishimoto 17" Heavy Duty Bar & Plate Oil Cooler w 10 AN Lines & Fittings
Motion Raceworks TH400 Transmission Cooler Kit w Fragola Lines & Fittings
Leroy Diesel Heavy Duty Extended Turbo Oil Feed/ Pressure Sensor Hose
Turned up 1/2 a turn 4153 HD Fuel Injection Pump from Oregon Fuel Injection
'93 6.5 Turbo Electric Fuel Pump
Quadstar Valve Cover Stud & Girdle Kit
Quadstar DB2 3/8 Injection Pump Inlet Fitting
Quadstar/ Mishimoto High-Flow Oil Catch Can
Quadstar Ultimate Oil Drain Kit
Duralast 4 Core All Aluminum Radiator
Titanium Wrapped Heater Hoses
Autometer GM Factory Match Pyrometer Gauge
Autometer GM Factory Match Fuel Pressure Gauge
CAT 1R-0750 High Efficiency 1/2" Inlet/Outlet Secondary Fuel Filter & WIX 24770 Filter Housing
CAT 175-2949 High Efficiency Fuel/ Water Separator 1/2" Inlet/Outlet Primary Fuel Filter & WIX 24770 Filter Housing
Quadstar Billet Fuel Return Log in Reverse Location
B&M TH400 Aluminum Deep Well Tranny Pan
Manual in-cab TurboSmart Boost Controller
Manual High-Idle switch
Manual Lift Pump switch
Manual TH400 Vacuum Modulator Controller
Rotella T-6 5w-40 during Cold Season
Rotella T-6 15w-40 during Hot Season
Specific Blend of Additives Added Every Fill Up or every other: Hot Shots EDT, Lucas Injector Cleaner, Royal Purple Atomizer
Soon to be done is installing new Mahle 6.5 Turbo Head Gaskets, Porting and Polishing Cylinder Heads more, Deshrouding the Valves, Porting the Super 60, Porting the Wastegate, Porting the Turbo HX Downpipe Adapter, Porting the Injection Pump Inlet, High Temp Coating the Diamond Eye Crossover Pipe & Wrapping, High Temp Coating the bottom of the Intake Manifold, Recoating both Exhaust Manifolds, Cleaning top of Combustion Chamber and Polishing Piston Tops, Maxing out Fuel Delivery. I'll also be Installing new full sets of Polished 6.5 Rocker Arms, Pushrods, Polished Lifters, Rocker Caps, Polished Lifter Guides & Retainers, Polished 6.5 Injection Lines, 6.5 CDR Valve Cover & Dual Pull CDR setup will also be installed. Will make Videos for each when ready.

[@inktownfishing4505]

Nice job! Good to see someone still spending money fixing up these older 6.2/6.5. I thought I was the only one left...lol!

[@TheAscendedMaster]

I got a thing for old Square Body Chevys and this 6.2 has been a blast to own. Easy to work on and far more reliable than any new vehicle.

[@americanwild141]

I think more people are starting to realize that and get into them. I have some 6.2 videos on my channel too but this set up is way nicer.

[@codybourland]

Love this video just starting my project 6.2

[@Josh-tr5zn]

Just got a 85 6.2 and it has 40k miles idk what to do with it

[@Dadcam_Can]

That has to be the baddest 6.2/6.5 refurb I have seen in a while. It looks like you added a lot of new hardware over the stock setup. I have 2 each 6.2L diesels sitting in my yard; one with a BAE turbo kit and the other naturally aspirated. These engines have definitely been misunderstood and undervalued for so long. Great job and thanks for providing inspiration and insight on what is possible for these classic machines. 👍🏻

[@TheAscendedMaster]

Hey thanks! Everything basically just fell into place as far as the upgrades go. Whatever I thought of I did and got a pretty great end result I say. Ya just gotta keep up on maintenance and will be good to go. Visual and physical inspections of your rig should be natural by now to have absolute confidence all is to par. My newer videos are during doing more upgrades and after as well and are worth checking out.

[@ryanburbridge]

Awesome!!! Love seeing people fix and maintain tried and true vehicles! New vehicles are absolute trash!

[@TheAscendedMaster]

Old is the new gold compared to new vehicles. All mechanical made of iron and steel...built to last not to break.

[@rangerismine]

Wow, that’s a ton of work and attention to detail.

[@TheAscendedMaster]

Thank you!

[@dominiquehaines3331]

Now that's fucking nice for a pretty penny..

[@americanwild141]

That’s a nice set up. I’m still running a K20 6.2 that I turboed. Love it.

[@TheAscendedMaster]

Thank you! Ya it definitely became a much funner truck after being turbocharged as you probably know with yours.

[@SWBjr15]

Sweet truck brother! Love these ole 6.2/6.5 Detroits. I have a 93 6.5 Crew Cab Dually. Still have a lot to do but enjoying the ride!

[@carsonbrown2791]

Great build. I am working in 6.5 build now. I was considering the mishimoto oil thermostat and larger oil cooler. You are first 6.5 guy I have seen actually incorporate one. Makes sense to me.

[@TheAscendedMaster]

It's really helpful in the cold weather as it recirclates the oil back to the block bypassing the oil cooler until it reaches 185° to aid in quicker warm ups. It also increases your oil capacity quite alot giving the motor more available oil slowing oil breakdown aiding in longer engine life and reducing oil change intervals. I highly recommend it for all 6.2 and 6.5 builds.

[@carsonbrown2791]

@@TheAscendedMaster sweet. Thanks for replying. Sounds worthwhile.

[@jonathanmyers6171]

You gave me great ideas for mine! Thanks!

[@lloydmarche7263]

Nice truck 👍. My uncle had a 1986 3/4 ton 6.5 turbo. I remember as a kid I loved the sound of that diesel engine. Still do.

[@TheAscendedMaster]

He must've swapped the original 6.2 for the Turbo 6.5 at some point which is a big upgrade in sense of power.

[@lloydmarche7263]

@@TheAscendedMaster Yes he did.

[@robertstiles626]

You are doing a great job i enjoy seeing your videos all the time over and over. Thankyou for all your knowledge keep it up.

[@TheAscendedMaster]

Awesomeness, Thank you! Glad they are useful and enjoyable. I love sharing knowledge.

[@stephenlamphier1141]

255 85 16's with 4:10 gears is a good combo. I run that combo on my 79 K20 with no rubbing issues. 65mph is easy...

[@paulherzmann6237]

BEAUTIFUL 🎉🙌🙌🙌 Are you running the turbo injection pump for the 6.5? Or just turning up the old 6.2 ?? Subscribed and waiting for more content 😅

[@TheAscendedMaster]

New from Oregon Fuel Injection DB2 HD 4153 turned up 3/4 turn.

[@bobbyk6761]

Im surprised to see the kittys didnt run out when you fired it up.

[@TheAscendedMaster]

They are probably a little deaf to it by now I would think especially since the Super 60 dumps her loud boosted soot load right next to the passenger door lol

[@ricwhitehorse2869]

Luv it !

[@garageassembled4701]

Great looking hot rod! Are you sure it’s not powered by CATs? Very tame cats you have in that lot.

[@robertstiles626]

What radiator did go with four core i would like one off those. Great videos very nice truck always watching over and over.

[@TheAscendedMaster]

I ordered this from AutoZone. They were out for awhile but they are stocked now. I thought I had a leak in mine and ordered another on warranty. It looks like a stock one in their system but it was the same as the one I have now. $650.00 I think for it.

[@GlacialErratic]

Sweet build! Favorite part is the cats, my cat runs for the hills when he hears my 6.5 lift pump fire up. Any idea what kind of HP/torque your getting? Again, nice power plant man.

[@TheAscendedMaster]

My lift pump is a bit quiet but ya when it clicks on and they are outside the truck they know what happens next lol I wouldn't hesitate to say I'm probably around 400+hp & 900+tq. I want to have it dynod and perhaps can do so this sun cycle (year).

[@runawayclutchdump1546]

Ill still take an idi with a zip tied fuel filter and 1 working glow plug

[@joe9885]

Looking at the quadstar super 54 kit for a 6.2 square body, be a good start with this kit and worth it?

[@TheAscendedMaster]

Super 54 works well with good low end & Super 60 is better at high end with lower EGTs.

[@SWBjr15]

You have a link to the Mishimoto oil cooler and thermostat kit you’re running?

[@TheAscendedMaster]

www.mishimoto.com/universal-heavy-duty-fluid-cooler-17-oo.html www.mishimoto.com/mishimoto-in-line-thermostat.html There are also multiple different options on their site for Oil Coolers and size so do look around for the one that will best suit you.

[@SWBjr15]

@@TheAscendedMaster Much Obliged brother! Are those braided lines also Mishimoto?

[@TheAscendedMaster]

@@SWBjr15 You got it! They are Mishimoto Oil Lines as well.

[@singlended]

Where could I get a used '94 6.5L turbo intake manifold with EGR (or with EGR cover plate) pls?

[@TheAscendedMaster]

I'd check eBay or a junk yard.

[@jarviskillz9731]

Please post a build sheet.

[@TheAscendedMaster]

In the description of this video I mention all that was done.

[@douglasdonegan9372]

Who did the work?

[@TheAscendedMaster]

All my work all my money lol

[@douglasdonegan9372]

@TheAscendedMaster nice.. it's looks good. I have a soft spot for those old chevy diesels

[@TheAscendedMaster]

@@douglasdonegan9372 Thanks! Ya me too. I had a '76 Suburban with a 454 for my first vehicle and loved it. The gas guzzler I called it lol

[@bumoffhtestreet]

21 psi?? Thats more than double what that 6.2 can safely handle. Have you dyno'd it?

[@TheAscendedMaster]

I shoved 25+psi and blew a head gasket. She loves it though and can take it. I haven't dynod her yet but she'll be around 400-500hp & 800-1000tq.

[@bumoffhtestreet]

@@TheAscendedMaster Careful with that crankshaft and harmonic balancer.

[@deltafreshrelics1660]

You need a drive pressure gauge if you want to know what’s really happening. Did you blow the gasket running the super 60 at 25 psi or was it a previous turbo? Kinda hard to call it the worlds most custom when it’s mostly kit bought. Should have built one about 15-20 years ago when there were no kits. The only way to do a square body turbo was with fabbing some parts. Like all the shit now in kits at quad star. I did it all to 2 different 82 trucks back in mid 2000s. You will get your feelings hurt on the dyno. Trust me. Best just to enjoy the seat of the pants dyno my friend.

[@TheAscendedMaster]

@@bumoffhtestreet Got a Fluidampr on.

[@TheAscendedMaster]

@@deltafreshrelics1660 Boost gauge & Pyro work well enough for now to tell me what's going on; later I'll add more gauges. Was using the Super 60 when I blew the Gaskets but I was full tilt doing 80mph 25psi up a steep mountain so she was well at her limit when it blew and I would expect that to happen under such extreme circumstances. The truck is very much highly modified. Everything is Ported & Polished from the Heads, Turbo, Exhaust, Intake, Valves are Deshrouded, Pump Inlet is Ported, Housing Pressure increased the list goes on. This truck is not like any 6.2 or 6.5 out there.

[@cman12]

All that and still no more hp than a stock 5.9

[@TheAscendedMaster]

Lol that's funny. This truck is over 450hp & 1000tq and will absolutely spank a 5.9.

[@TheAscendedMaster]

A stock 5.9 is only 235hp/450tq...I passed that before I even Turbocharged it lol

[@aaronpatterson2369]

...ive seen cleaner, and thats hardly custom.