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5 Grand (maybe more) for the Buildup

Discussion in 'GM 6.5 Diesel Engines' started by GM Guy, May 8, 2008.

  1. GM Guy

    GM Guy Manual Trans. 2WD Enthusiast

    4,568
    356
    May 6, 2008
    NW Kansas and SC Idaho
    OK, I've been looking around and making multiple random posts about my truck, and now i ask:

    With a 5 thousand dollar budget, how would you upgrade the engine in a truck like mine?
    I want it built up for fairly heavy towing (14K GTW), and I want it to be dead reliable and last for a long time(engine and components), as well as fairly fuel efficient when unhooked from the trailer (15mpg or more, preferably). I don't want a road racer, (as i am looking for a 1995 fcode 5spd 2500 for that!) I want pulling power, and i want it to hold its own on the hill, prefer at least enough power to hold 2nd or 3rd.
    The engine has head problems, and I will probably overhaul it (If there is problems w/ the bottom end, which i cant imagine there isn't), so it will be stripped, so no upgrade is out of the question. It is a flatbed, so it will be hard for a large water/meth system, propane system, etc. I was looking for recommendations such as exhaust (3 or 4in), current or GM8, Kennedy chip w/ factory wastegate, or heath w/ TM, overhaul kit/source, stuff like that.
    If you would name the brand/company/product, (Ex: Kennedy Cooling Upgrade, Heath Towing Chip, etc) and price, that would be great.

    I am looking to never overheat anything (motor oil, coolant, EGT), i will have guages, but i want to not have to run against the limits.

    I would prefer the 5 grand cover the whole truck, not just the engine. (If i am asking too much for that little $ amount, please say so! I can up it up, but I am cheap, so I'd prefer not to!:smilewinkgrin:)

    I already have the rest of the powertrain upgrades covered, Geartech HD finned cover and QK1000 filter (South Bend clutch/flywheel if needed), and a Mag-Hytec Diff cover. Synthetic oils and guages in both. I will ask about oils and specific South Bend systems at a later time.

    I know i asked a lot of questions, sorry! :sad:

    Any help appreciated, thanks!
     
  2. Rhinopkc

    Rhinopkc Bull in a China Shop

    122
    0
    May 6, 2008
    Lake Havasu City,AZ
    Towing 14k over any kind of hills will not be fun with a 6.5. If I were going to go for it, I would do the following: all of the cooling mods (high flow pump, dual t-stats, Kennedy fan clutch, additional oil and trans coolers, ATA intercooler(parts off of e-bay) , 4inch exhaust, 18:1 pistons, Holset turbo (or that monster GMCTD has). If I did all of that, I would want someone to custom program my PCM to match the capabilities of the bigger turbo and reduced compression (Kennedy or Wester's). I'm sure I left something out, but that's a good start for the loads you're going to try and pull.
     
  3. GM Guy

    GM Guy Manual Trans. 2WD Enthusiast

    4,568
    356
    May 6, 2008
    NW Kansas and SC Idaho
    That is what the trailer grosses, but i think it will be more like 10k. who do you recomend for an intercooler source? kennedy? (i'm too young to buy off of e-bay) I think the 5.13s will help with towing! :)
     
  4. Acesneights1

    Acesneights1 New Member

    10,018
    10
    May 5, 2008
    Northeast CT
    Kennedys intercooler is very very pricey. For someone on a budget build your own. Parts can be gotten for cheap off fleabay. Maybe PM Scrufdog. He did a nice top mount one I'd like to clone eventually. TD also managed to snake one in on his without going outside the wheelwells.
     
  5. Turbine Doc

    Turbine Doc Just Another Diesel Guy

    Typo for the 5:13 ???? what week you planning on getting there won't have any top end.

    Stuff in my sig under 5K over time I'm capable to comfortably move 18K# with my rig, only about 13 mpg though when hauling that big, this is with stock CR, describe your 14K load open trailer or "slab sided" box that's gonna catch a lot of wind, adding drag equivalent to higher physical weight.

    Kennedy/Spearco IC can be self fabbed for far less $$$ than what I shelled out for it, but it's a good setup for ready to install kits (most trucks) http://myweb.cableone.net/tbogemirep/ my install there that link, since then I've swapped out for solid tubing vs flex pipe, (dummy me) exh pipe spirals only rated for 3 psi, & I was boosting to 15, so losing air and weeping CDR scavenged oil.

    Rhino, GMCTD doesn't have big turbo on his GMC, possibly thinking of another member, Stateman & myself are running a Mitsubishi TD07-22A non WG turbo which won't require 18:1 piston IMO he's 18:1, I'm not, will eventually back that up with data.
     
    Last edited: May 9, 2008
  6. GM Guy

    GM Guy Manual Trans. 2WD Enthusiast

    4,568
    356
    May 6, 2008
    NW Kansas and SC Idaho
    It has 19.5s, so that will help a bit. It is a C3500HD, they only came with 4.63 and 5.13.

    It is a 20' PJ deckover flat deck trailer. Will haul farm equipment, 8 row cornheader, planter, etc.
     
    Last edited: May 9, 2008
  7. Turbine Doc

    Turbine Doc Just Another Diesel Guy


    Oh you already got no top end, I'm 3:73 roll with Millenium tandem axle/wheel 25' 9T capable gn flat bed trailer pull a 6T backhoe with ease from time to time, short haul about 200 miles some small grade/hills mostly flat pull hills 55-70 depending if I get good enuff rolling start at bottom of hill, 75+ capable if I wanted to on flat ground.

    1st I'd open it up let it breathe 4" exh/new downpipe, spotless clean rad/condenser, mite wanna call Heath Diesel www.heathdiesel.com for upgrade to ho pump, retuned fan clutch, 9 blade fan, fresh injectors, stock set will probably be all you'll need, PMD remote, pretty much all stuff in my sig will help you, with 5:13 you may have enuff grunt to not need the IC, talk to Heath to see what they say I'll assume they have a chip for 5:13 gears but don't know for sure, you can always add IC later if you want.
     
    Last edited: May 9, 2008
  8. GM Guy

    GM Guy Manual Trans. 2WD Enthusiast

    4,568
    356
    May 6, 2008
    NW Kansas and SC Idaho
    Yeah I'm thinking about omiting the IC, don't think it wil work w/ the huge springs of the 3500HD too well.


    What does everyone recommend for an overhaul kit and gaskets?
     
  9. GM Guy

    GM Guy Manual Trans. 2WD Enthusiast

    4,568
    356
    May 6, 2008
    NW Kansas and SC Idaho
    Does it hurt to mix and match cooling kits? I would like to kennedy for the cooling kit, but what is the deal with the calibrated clutch? What temp is it calibrated for? I don't want to have the fan kicking in all the time. I might go w/ another clutch. Also, what is the factory temp for the 6.5? I kind of like to stay closer to the factory side of the temperature, and other things. (wallet and dealer parts dept. know it :banghead:) Thats why I asked Kennedy about the parts sources, the crossover pipe, t-stat outlet is all GM (yes, i'm that paranoid :eek:ut:)

    Also, is it true that the D-max fan is bolt on and is only 40 bucks at the Dealer?
     
  10. GM Guy

    GM Guy Manual Trans. 2WD Enthusiast

    4,568
    356
    May 6, 2008
    NW Kansas and SC Idaho
    Does anyone have a recommendation on exhaust? I want to go with SSDiesels because they are stainless.
    Additionally, would it be wise to stay away from cotton gauze air filters? I'm planning on just going with a newer style round filter housing. Also, on the round filter housing, is there only one for HD 6.5s, or do i need to find a specific year?
     
  11. VWhauler

    VWhauler Recruit

    12
    0
    May 6, 2008
    Irmo, SC
    The early D-Max plastic fans are 4-bolt and will fit the 6.5 with some minor trimming of the shroud. I know the '01 model has the correct hub to mount up. As for the price, list price is a little over $80, so I'd be surprised if you could get your hands on a new one for under 60.
     
  12. GM Guy

    GM Guy Manual Trans. 2WD Enthusiast

    4,568
    356
    May 6, 2008
    NW Kansas and SC Idaho
    good to know, thanks!
     

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