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Thread: How much will it cost me to change the head or head gasket?

  1. #1
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    Default How much will it cost me to change the head or head gasket?

    How much will it cost me to change the head or head gasket?
    The 94 Dually is losing coolant. About a gallon every 2000 miles.
    It starts a little ruff with some white smoke then smooths out rather quickly and runs good.
    I haven't checked the glow plugs yet for uneven dis colorization. Or the compression.
    I'm guessing a cracked head or head gasket problem.
    It is not going into the pan. It is also not leaking that we can tell. No drips. running or parked. And the hose is not getting hard.
    I have done no investigation yet.

    How much does it cost to get a head checked?

    How much will a replacement head be?

    How much for everything needed to change the head gasket?

    How much more are studs than head bolts?

    Thanks
    Jeff
    98 GMC Suburban 2500 6.5 4x4 235,000 mi, FS2500, new timing chain, gears, Fluidamper & remote PMD, braided stainless oil cooler lines

    96 GMC 6.5 Suburban 1500 4x4 240,000 mi; Amsoil bypass & remote transmsision filters
    new timing chain, gears, fluidamper & remote PMD, braided stainless oil cooler lines

    95 Tahoe 2 door 4x4 6.5 240,000 mi;
    Stainless mandrel 3" exhaust, Amsoil Bypass filter, new timing chain, gears, Fluidamper, transmission, 3.73 rear end & remote PMD, braided stainless oil cooler lines

    1989 GMC Sierra 2500 2wd 5 spd get-rag trans had 108,000 mi. in 92 when the odometer broke. 7-800,000 miles on the truck. Installed a GM crate 6.5 non-turbo & FS 2500 in 2000 about 400,000 miles on the motor
    new timing chain, gears, Fluidamper & IP
    locked up and sold.

    95 Chevy C2500 xtra-cab 2wd 6.5 240,000 miles, remote PMD

    91 international 4700 low pro, spicer 6 speed, DTA 360 with 18' van box 500,000 miles plus.

    NRA Life Member for over 30 years
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    1994 chev K3500 crew cab SRW 5 speed 4x4 230,000 miles
    PMD with heat sink. FS2500 bypass filter, The engine oil cooler lines are not leaking, Knock wood

  2. #2
    LeroyDiesel.com Burning oil's Avatar
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    Obviously you want to investigate to pin point the leak first. I had my truck leaking and for about a month I assumed it was the head gasket. When I had time to look at it more closely it turns out it was just a rusted freeze plug with a tiny hole in it.Maybe you will get that lucky too.
    Leroy.
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    At a gal every 2000 miles would I have a noticable leak? Something that would drip if I let it run for an hour over concrete after it was warmed up?
    98 GMC Suburban 2500 6.5 4x4 235,000 mi, FS2500, new timing chain, gears, Fluidamper & remote PMD, braided stainless oil cooler lines

    96 GMC 6.5 Suburban 1500 4x4 240,000 mi; Amsoil bypass & remote transmsision filters
    new timing chain, gears, fluidamper & remote PMD, braided stainless oil cooler lines

    95 Tahoe 2 door 4x4 6.5 240,000 mi;
    Stainless mandrel 3" exhaust, Amsoil Bypass filter, new timing chain, gears, Fluidamper, transmission, 3.73 rear end & remote PMD, braided stainless oil cooler lines

    1989 GMC Sierra 2500 2wd 5 spd get-rag trans had 108,000 mi. in 92 when the odometer broke. 7-800,000 miles on the truck. Installed a GM crate 6.5 non-turbo & FS 2500 in 2000 about 400,000 miles on the motor
    new timing chain, gears, Fluidamper & IP
    locked up and sold.

    95 Chevy C2500 xtra-cab 2wd 6.5 240,000 miles, remote PMD

    91 international 4700 low pro, spicer 6 speed, DTA 360 with 18' van box 500,000 miles plus.

    NRA Life Member for over 30 years
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    1994 chev K3500 crew cab SRW 5 speed 4x4 230,000 miles
    PMD with heat sink. FS2500 bypass filter, The engine oil cooler lines are not leaking, Knock wood

  4. #4
    I have injecter-itis 625fireman's Avatar
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    Thats nota whole lot. Could be a pin hole you are not seeing some where. Check all connections for the coolant lines. Definatly the (*%^$#$@ quick conects on the heater hose. These thing will pisss just a little for a long time.
    Joe

    1994 K 3500 6.5 4x4 flatbed, snowplow, 2.5" crossover, 3" downpipe, 3"-4" increaser, no kitty, no muffler, homemade turbo master, 4" black stacks, pmd cooler, auto, gooseneck, hitch, TDCO-1.94 134K and countin
    1994 K 3500 6.5 4x4 frame, cab. build plans include: snowplow, stacks, paint, 250 HP 6.5, NV4500, central hyd., switchable beds. 68,000 miles
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    Registered User bison's Avatar
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    I would check for wet at the firewall and under the pass side floor mat(leaking heater core) and engine bay firewall heater hose/connections,it could drip right on the downpipe and evaporate without one seeing it.

    A coolant pressure test should reveal a pinhole leak any where external,quik connect,waterpump,freeze plugs,rad, etc
    98 GMC 2500 HD 6.5 F auto ext 4x4 engine rebuild at 268.000 km,Provent Oil seperator,Vacpump deleted,TM,all gauges,5th wheel.currently at 307.000 km
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    6.5 nut job/addict
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    ARP head studs about $130 from summit racing.Crappy tty head bolts about $60. Fel-pro head gaskets about $28 each at napa. Small can of "the right stuff" and intake and misc. gaskets $50. Cloyes timing set $70 summit racing. Or you could try the gm tablets like mudbath did. If you head gasket was leaking into the cooling system it would be over pressurizing it.
    Barry



    I am not on the Heath Bandwagon

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    I'm sure there are directions for a coolant pressure test here. Since I'm lazy does anybody know the test pressure off the top of their head? 5 lds. rings a bell. I just don't know if it's the right bell.
    98 GMC Suburban 2500 6.5 4x4 235,000 mi, FS2500, new timing chain, gears, Fluidamper & remote PMD, braided stainless oil cooler lines

    96 GMC 6.5 Suburban 1500 4x4 240,000 mi; Amsoil bypass & remote transmsision filters
    new timing chain, gears, fluidamper & remote PMD, braided stainless oil cooler lines

    95 Tahoe 2 door 4x4 6.5 240,000 mi;
    Stainless mandrel 3" exhaust, Amsoil Bypass filter, new timing chain, gears, Fluidamper, transmission, 3.73 rear end & remote PMD, braided stainless oil cooler lines

    1989 GMC Sierra 2500 2wd 5 spd get-rag trans had 108,000 mi. in 92 when the odometer broke. 7-800,000 miles on the truck. Installed a GM crate 6.5 non-turbo & FS 2500 in 2000 about 400,000 miles on the motor
    new timing chain, gears, Fluidamper & IP
    locked up and sold.

    95 Chevy C2500 xtra-cab 2wd 6.5 240,000 miles, remote PMD

    91 international 4700 low pro, spicer 6 speed, DTA 360 with 18' van box 500,000 miles plus.

    NRA Life Member for over 30 years
    Vote Freedom First

    1994 chev K3500 crew cab SRW 5 speed 4x4 230,000 miles
    PMD with heat sink. FS2500 bypass filter, The engine oil cooler lines are not leaking, Knock wood

  8. #8
    Registered User ak diesel driver's Avatar
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    most rad caps are 16 lbs
    96 gmc k2500 4" exhaust, marine inj, #9 resistor, GL4, turbomaster, duraterms,-1.94 TDCO,FTB, remote pmd, isspro pillar gauges, lift pump relay added ,141 block, 2 1000 w block heaters, 2 150w glue on oilpan heaters, 2 150w glue on transpan heaters, 97 K47 air filter , IP replaced at 229k ,gear drive set awaiting install, Parts for intercooler waiting to be installed

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    LeroyDiesel.com Burning oil's Avatar
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    You can rent the tool from auto zone loaner tools. Pump it up to 15-16 psi and check for leaks. The tool also test the cap.
    Leroy.
    www.leroydiesel.com <<< CLICK
    We sell pmd extension cables and the FS PMD or the new Stanadyne PMD with available 7 year warranty.Turbo Boost Bolts and lots of 6.5 turbo diesel parts. Check out the web site.
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  10. #10
    Well it hits on 7 of 8... WarWagon's Avatar
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    Sample both the engine oil and the trans oil. Radiator intercooler failure?

    Look at the radiator and where the tubes go into the tanks. A pinhole gets dried by the fan.

    Look at the block heater.

    Check water pump weep hole.

    Test or replace the radiator cap. A weak cap will pop off and loose coolant esp. after shutdown at random times.

    If the oils test clean ask yourself if the cost to fix the leak is worth it? Coolant is cheap. As is the advice for stop leak.
    Not enough room in sig for all the stuff I have that LeroyDiesel.com sells.

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    1993 Chevy "Patch" K2500 6.5 Diesel LB project beater... Now a 6.2 re-power w/6.5 NA heads. Gapless rings. Walbro FRB-5. A-Team Turbo. ARP head studs. 6 banger Trans tune chip I think I have changed, replaced, or tightened every bolt and nut on this thing!

  11. #11

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    GM Tabs work very well in your situtation. They were designed to be normal PM for the 4100 Aluminum motors. I have used them in these engines with great results. HG's are more than 28$ each from Napa, more like 60. I just bought a set. ARP studs are nice....But bear in mind...You may have to pull the engine to use them. I am not sure on NBS trucks but on OBS trucks like my Burb there is no way you are getting the heads on or off with studs without pulling the motor and unless you are beatig the balls off it, TTY bolts are fine. It's not a bad job. Probably got those shitty felpro printo seals in it. Garbage. I'd do the GM tabs first though. If it plugs the leak , you are NOT hurting anything by driving it. They lasted 3 yrs in my old 83 with 6.2 and were STILL holding when I sold the truck.
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    Thanks I'll try the GM tabs after I look at it some more & do the pressure test.
    98 GMC Suburban 2500 6.5 4x4 235,000 mi, FS2500, new timing chain, gears, Fluidamper & remote PMD, braided stainless oil cooler lines

    96 GMC 6.5 Suburban 1500 4x4 240,000 mi; Amsoil bypass & remote transmsision filters
    new timing chain, gears, fluidamper & remote PMD, braided stainless oil cooler lines

    95 Tahoe 2 door 4x4 6.5 240,000 mi;
    Stainless mandrel 3" exhaust, Amsoil Bypass filter, new timing chain, gears, Fluidamper, transmission, 3.73 rear end & remote PMD, braided stainless oil cooler lines

    1989 GMC Sierra 2500 2wd 5 spd get-rag trans had 108,000 mi. in 92 when the odometer broke. 7-800,000 miles on the truck. Installed a GM crate 6.5 non-turbo & FS 2500 in 2000 about 400,000 miles on the motor
    new timing chain, gears, Fluidamper & IP
    locked up and sold.

    95 Chevy C2500 xtra-cab 2wd 6.5 240,000 miles, remote PMD

    91 international 4700 low pro, spicer 6 speed, DTA 360 with 18' van box 500,000 miles plus.

    NRA Life Member for over 30 years
    Vote Freedom First

    1994 chev K3500 crew cab SRW 5 speed 4x4 230,000 miles
    PMD with heat sink. FS2500 bypass filter, The engine oil cooler lines are not leaking, Knock wood

  13. #13
    6.5 nut job/addict
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    Quote Originally Posted by Acesneights1 View Post
    GM Tabs work very well in your situtation. They were designed to be normal PM for the 4100 Aluminum motors. I have used them in these engines with great results. HG's are more than 28$ each from Napa, more like 60. I just bought a set. ARP studs are nice....But bear in mind...You may have to pull the engine to use them. I am not sure on NBS trucks but on OBS trucks like my Burb there is no way you are getting the heads on or off with studs without pulling the motor and unless you are beatig the balls off it, TTY bolts are fine. It's not a bad job. Probably got those shitty felpro printo seals in it. Garbage. I'd do the GM tabs first though. If it plugs the leak , you are NOT hurting anything by driving it. They lasted 3 yrs in my old 83 with 6.2 and were STILL holding when I sold the truck.
    I've boughten 4 head gaskets from napa in the last year. Under $30 each. Arp head studs can be installed with the engine in the truck. 2 or 3 on the passenger side near the a/c box ,need to be put in the holes in the head before putting in place. All the rest can be screwed in with the head in place.):h The tty bolts don't retain their torque value under heat and vibration and are one time use only. ARP head studs are reuseable.
    Barry



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  14. #14
    Depends on the 6.5 Matt Bachand's Avatar
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    Quote Originally Posted by bk95td View Post
    I've boughten 4 head gaskets from napa in the last year. Under $30 each. Arp head studs can be installed with the engine in the truck. 2 or 3 on the passenger side near the a/c box ,need to be put in the holes in the head before putting in place. All the rest can be screwed in with the head in place.):h The tty bolts don't retain their torque value under heat and vibration and are one time use only. ARP head studs are reuseable.
    So if you don't have A/C could you pull one out at a time and replace it with Studs?
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    You must get a good deal. I paid 60$ a piece. I almost shit when I saw the bill and that was with Municipal Discount.
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