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Thread: Has anyone actually installed an Optimizer 6500

  1. #16
    Registered User Woody35's Avatar
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    the engineer at the franklin ohio plant that builds these says these p400s are safe up to 28 psi at 20.2:1 comp ratio. thats a strong engine
    1997 Chevy K1500 4X4 EC/SB 6.5TD/4L80E
    3.42 G80, GM-8 Turbo gated @ 15 psi , KOJO Tune
    Walbro FRC-10 LP, Bosch Injectors, Bosch Duratherm Glowplugs, Relocated PMD,
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    DTR Old School Smokers Club member #22

  2. #17
    Registered User SmithvilleD's Avatar
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    Don't know if it means anything, but AM General's website still shows the old specs on their website, for the Optimizer 6500 name - cast crank, 205/440 trq/hp rating, etc.

    http://www.amgeneral.com/vehicles/ge...ifications.php

    Don't know if it's just the website isn't updated? Or maybe there's inventory of 2 different crate engines being sold?
    1995 K2500, 8600 GVWR, 6.5TD, NV4500, 3.73:1, ~19:1, balanced, Fluidampr, DSG timing gears, '97 cooling upgrades, DMax fan - SD fan clutch, Kennedy TD-Max chip, 2350 psi/pop marine injectors, 4" exhaust, ceramic coated exh manifolds/turbine housing/crossover pipe, Autometer: pyrometer, boost, oil temp, oil press, fuel press, & water temp gauges, remote oil filter, B&M plate-style oil cooler w/ braided SS oil lines, 10 micron Racor pre-lift pump, Walbro FRB-5, GMTDScan Tech, Dipaco PMD -lrg heatsink frnt licence bracket in bumper

  3. #18
    Registered User SmithvilleD's Avatar
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    I love this Ron guy's auto-signature line:

    "Consider it Done"

    Very nice!
    1995 K2500, 8600 GVWR, 6.5TD, NV4500, 3.73:1, ~19:1, balanced, Fluidampr, DSG timing gears, '97 cooling upgrades, DMax fan - SD fan clutch, Kennedy TD-Max chip, 2350 psi/pop marine injectors, 4" exhaust, ceramic coated exh manifolds/turbine housing/crossover pipe, Autometer: pyrometer, boost, oil temp, oil press, fuel press, & water temp gauges, remote oil filter, B&M plate-style oil cooler w/ braided SS oil lines, 10 micron Racor pre-lift pump, Walbro FRB-5, GMTDScan Tech, Dipaco PMD -lrg heatsink frnt licence bracket in bumper

  4. #19
    1995 2-door 1/2 ton Tahoe. Positraction 3.73, 4L80-E, 4WD, HyperTech chip, Flowmaster crossover/downpipe, hogged out intake, '97 air cleaner assembly with factory filter, 3" lift, #280 flex-a-lite fans, Centerline wheels, PowerSlot rotors, 198K miles. Hellwig swaybars. Rancho adjustable shocks, Heath PMD Isolator, Health HD Lift Pump, OPS Relay Mod, new 170 Amp Alternator (sure helps with the electric fans), Hadley train horns! 0-60 in 9.5 seconds.

  5. #20

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    And here's the article itself...P400 Turbo Diesel 4x4 Dually.pdf
    1995 2-door 1/2 ton Tahoe. Positraction 3.73, 4L80-E, 4WD, HyperTech chip, Flowmaster crossover/downpipe, hogged out intake, '97 air cleaner assembly with factory filter, 3" lift, #280 flex-a-lite fans, Centerline wheels, PowerSlot rotors, 198K miles. Hellwig swaybars. Rancho adjustable shocks, Heath PMD Isolator, Health HD Lift Pump, OPS Relay Mod, new 170 Amp Alternator (sure helps with the electric fans), Hadley train horns! 0-60 in 9.5 seconds.

  6. #21
    Recruit midniteplowboyy's Avatar
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    There was a real nice gentleman there at W.W.Williams, named Rod Townsend, but he passed away about a year ago. He was a real stand up guy, used to like talking to him when he came to the shop to check on his warranty parts. He tried to sell me a P400 a couple of years ago, just didn't have the cash or need it, IIRC it was only $400 more than the Optimizer.

    I haven't met Rod's replacement, I'm assuming its the Ron Taylor mentioned earlier. W.W.Williams is a stand up company, I wouldn't worry.

    I'd get the P400 though, since its only a little more.
    1992 6.5TD K2500 4x4 5spd 3.42's reg cab, Feed Truck, fully cranked DB-2, straight piped factory 3" exhaust, boost and pyro, 3/8" feed the beast mod, 3500 rear springs, flat bed, 2000lb T&S trip hopper feeder, K/C Daylighters, 3-1/2" receiver hitch

    1993 6.5TD C3500 2x4 4L80 3.21's 4door, Play Truck, fully cranked DB-2, WH1C Holset Turbo, 24x12x4 I/C, 4" Exhaust, 0.010 thicker Head Gaskets, ARP Head Studs, Pete Jackson Gear Drive, Fluidampr, Bosch Marine Injectors, HO Water Pump, Amsoil Bypass Oil Filters and Air Filter, fuel filter housing mod with 3/8" fuel lines, Gauges(Pyrometer, Boost, Fuel Pressure, Water Temp in each head, Oil Temp, Trans Temp and Trans Pressure), BD Torque Converter, Transgo HD Shift Kit, 3.21 gears, U.S.Gear Underdrive, rear 4link Air Ride,22" Alcoa's and 305/40 Tires. BROKEN CRANK!!!, Damn Dorman pulley . Getting a P-pumped 12valve Cummins, RTO-6610 Road Ranger 10spd, 14" double disk clutch

    http://www.thetruckstop.us/forum/album.php?albumid=286

    1994 6.5TD K2500 4x4 4L80 3.73's reg cab, The Stabbin Feed Wagon Max-E-Tork Heath chip, manual GP overide, Flowmaster 3" downpipe, straight piped factory 2-3/4" exhaust, posi-lock actuator, 3" body lift, flat bed, remote hydraulics, hay spear, 2500lb T&S trip hopper feeder, 33-12.50 front/14.50 rear-16.5" super swampers on 9-3/4" and 12" rims, backup camera

    2004 6.6TD K3500 4x4 Allison 3.73's 4door, Towing Truck Ranch Hand brush gaurd, Ranch Hand wrap around rear bumper, B&W turnover hitch

  7. #22
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    I have installed i p400 into a customers H1. I didnt remove the oil pan and check the bottom end. but there is definitely a difference in the weight and build quality of this as compared to any other 6.5. There did seem to be a performance difference in the standard 6.5 and the p400. I have a place I do some acceleration tests and it the p400 was 2mph faster. We had Kennedy do us a custom tune for it and it will hold its own against the 06 Alpha H1s with the dmax.

  8. #23

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    Quote Originally Posted by midniteplowboyy View Post
    There was a real nice gentleman there at W.W.Williams, named Rod Townsend, but he passed away about a year ago. He was a real stand up guy, used to like talking to him when he came to the shop to check on his warranty parts. He tried to sell me a P400 a couple of years ago, just didn't have the cash or need it, IIRC it was only $400 more than the Optimizer.

    I haven't met Rod's replacement, I'm assuming its the Ron Taylor mentioned earlier. W.W.Williams is a stand up company, I wouldn't worry.

    I'd get the P400 though, since its only a little more.
    OK, so there's a difference between a "6500 Optimizer" and a "P400". What IS the difference?

    -Rob
    1995 2-door 1/2 ton Tahoe. Positraction 3.73, 4L80-E, 4WD, HyperTech chip, Flowmaster crossover/downpipe, hogged out intake, '97 air cleaner assembly with factory filter, 3" lift, #280 flex-a-lite fans, Centerline wheels, PowerSlot rotors, 198K miles. Hellwig swaybars. Rancho adjustable shocks, Heath PMD Isolator, Health HD Lift Pump, OPS Relay Mod, new 170 Amp Alternator (sure helps with the electric fans), Hadley train horns! 0-60 in 9.5 seconds.

  9. #24
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    Quote Originally Posted by TurboTahoe View Post
    OK, so there's a difference between a "6500 Optimizer" and a "P400". What IS the difference?

    -Rob
    Yes the 6500 as Am General used in the 2004 h1 and the late model HMMV's is basicly the same as any other 6.5 the main differences were it was controlled by a Caterpillar computer system and used a mass airflow sensor it also has an egr system with an egr cooler to meet emissions.As for the p400 it has a lot of improvements: beefier block, forged crank and rods, a main cap girdle, cast aluminium oil pan, higher flowing heads with redesigned prechambers and pre cups. I can post up some pics of the one I installed in the morning.

  10. #25
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    Hi guys, just registered here but have been around for ages on the other sites. The p400 is the latest greatest from amg. It is easily identified by the bed plate between the oilpan & the block. The bedplate incorporates all the main bearing caps into one piece & is easy to see as an extra piece of cast iron between the pan & block. The optimizer 6500 is the updated version of gms 6.5l diesel. From the research I have done, they did some redesign on the block & head castings in late 2001, & had the navistar foundry start casting them with better metallurgy. This is the standard replacement engine sold now in two versions, the high compression version for land vehicles & the 18:1 version for marine apps. I have had the marine version from penn diesel in my truck for over 3 years & 70,000 miles with mods. No problems so far. The p400 would be my first choice now but was not available in 06 when I did mine. The oil pan that comes on the p400 will not fit in a truck & there is no aftermarket available yet so you would have to fabricate one to fit. Not a small task from what I have seen.

  11. #26
    Registered User Mikey von's Avatar
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    Quote Originally Posted by TAG View Post
    The oil pan that comes on the p400 will not fit in a truck & there is no aftermarket available yet so you would have to fabricate one to fit. Not a small task from what I have seen.

    It has been said that the p400 oil pan will fit the OBS solid axle trucks (at least 4x4).
    1989 Suburban 2500 4x4. Custom 6.2L -> Th400 -> NP241, 10 bolt open front with beefy tie-rod, 14 sf open rear with disks, 4.10 gearing, 35" MtRs, 4" lift. Many plans but little $$$.

    1999 Suburban 1500 4x4. 5.7l Vortec -> 4L604 -> stock drive train baby hauler.

  12. #27
    Being fat sucks Anubis's Avatar
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    now I am confused ........ is the P400 avail to the public or not?

    do you need the cat computer?

    what are the power numbers on it with and with out the cat computer?
    I originally bought it
    to put the engine/
    trans in my Bronco

    94 2500 Silverado ECSB 4x4 (duh ....... for the longest time that said longbed)
    Vin "S"
    4L80E
    4.10 gears
    PMD heatsinked and relocated
    this is the only 6 lug 3/4 ton I have ever seen


    Save a Logger, kill a crooked politician.

  13. #28

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    See post # 21 re availabity .

  14. #29

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    So the Optimizer was started in 01? I don't want to jack the thread but does anybody know how to tell an 01' 6500 optimizer block apart from your typical off the shelf 6.5L?
    Jamie

    1998 Chevy C/3500 Cheyenne
    6500 Detroit Diesel V8, 4L80E Auto, Divorced NP 205 with Twin Stick,Dana 44HD Solid Front Axle, AAM 11.5" Rear axle, CC/LB/SRW "Land Yacht Package"

    2014 Chevy Cruze
    2.0L I4 Clean Diesel (LUZ), Aisin Auto.

  15. #30
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    Used to be the double diamond navistar logo cast in the valley meant it was the navistar cast newer design. Sadley, the chinese copys now have this logo as well. There was a thread a long time ago where Kennedy said you could tell the chinese blocks because the julian date was the same on all of them.

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