1996 12v Cummins Mods - Dodge Cummins Diesel Forum
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post #1 of 22 (permalink) Old 10-27-2011, 08:15 PM Thread Starter
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1996 12v Cummins Mods

I'm looking to buy a 12v cummnins. The engine has 145,000 miles on it in total. It was built with the following:

-compound turbo kit (s300/s400)
-5x12 injectors
-#5 fuel plate
-afc springs
-181 delivery valves
-60lb valve springs
-air to water intercooler
-3 piece exhaust manifold
-5" exhaust
-4000 rpm gov springs.

Truck has 800 miles on it since all of this was added.
A few people have told me that a truck with this amount of mods to the engine makes the 12v unreliable. Is this true??

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post #2 of 22 (permalink) Old 10-27-2011, 08:19 PM
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only thing lacking from complete reliability that i see is an airdog or fass. modding a 12 valve does NOT make it unreliable

'97-5" straight #100 ff, 19*, 4k gsk, AD II 165, valair dd clutch, 1-3/8" billet input, ARP studs, 60#, BD Super B over s475, 024's, Mayville WI best 5x14's,
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'90-4" exhaust, kdp killed, pacbrake, 60 lb springs
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post #3 of 22 (permalink) Old 10-27-2011, 08:27 PM
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Does the truck have a built trans? Like said above looks good except for a fass/airdog.

2001 Dodge 2500 4x4 w/12v
HE351 over S475, DDP Comps, Benched 181 Pump, 197 Dv's, Suncoast, FASS, Tork OFV
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post #4 of 22 (permalink) Old 10-27-2011, 08:32 PM Thread Starter
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yeah it has a built trans. nv4500 with 5th gear fixed... i dont remember exactly which clutch but supposed to be able to handle 1000 ft lb of torque or something like that
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post #5 of 22 (permalink) Old 10-27-2011, 09:39 PM
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Looks good to me, just watch the EGT. Reliability should not be an issue.

96 3500 ExCab dually flatbed 4x4, NV4500, 4.10s, 254K, BHAF, 17*, 100 plate, AFC mods, 024 DVs, 3K GSK, benched by Farrell, 5x.012s, Hamilton 178/208, 60# springs, O-ringed, 62/65/14, Coated pistons, ARP head studs, South Bend 13" Con-OFE, 4" exhaust
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post #6 of 22 (permalink) Old 10-27-2011, 10:06 PM
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Quote:
Originally Posted by j-lou View Post
yeah it has a built trans. nv4500 with 5th gear fixed... i dont remember exactly which clutch but supposed to be able to handle 1000 ft lb of torque or something like that
Make sure about what clutch is in it. With that setup I would think you will be well over 1000 ft lbs. I'm over 1000 with a small single.

'96 F250 SuperCab w/ '94 6BTA S362/S480 compounds, A1studs, 5x.014's, 191's, 2095 plug, AFC mods, no plate, 4KGSK, Airdog 150, 60lb valve springs, 18*, Banks Techni-cooler, NV4500, KDP tab'd, Valair clutch, BD exh brake, 572hp/1103tq @ATS Diesel, Denver, CO 3-3-12
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post #7 of 22 (permalink) Old 10-28-2011, 02:00 AM
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Watch boost pressures. I didn't see studs on that list. I wouldn't push it over 50 psi on stock head bolts.

My 1993 Chevy 2500 Cummins conversion
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post #8 of 22 (permalink) Old 10-28-2011, 03:25 AM
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Quote:
Originally Posted by goosekllr View Post
Does the truck have a built trans? Like said above looks good except for a fass/airdog.
Quote:
Originally Posted by 12valvedriver View Post
only thing lacking from complete reliability that i see is an airdog or fass. modding a 12 valve does NOT make it unreliable
Do you two truly believe that an electric lift pump is more reliable than a mechanical one?

I'm speaking of long term reliability, not which one flows the most or has cooler filters.


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post #9 of 22 (permalink) Old 10-29-2011, 01:45 PM
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Twins with stock DV's and 5x.012" injectors, sweet. Good thing you have a air to water intercooler to keep all that fuel cool with that huge #5 plate.

So are you going to buy an ice machine to run in the bed while your driving the truck around to keep the cooler stocked with ice?

94 F350 12v it started as a test unit for fuel system parts, baselining at 451/1083... now its a full blown 2.6 truck with some bada$$ names on the side of it.
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post #10 of 22 (permalink) Old 10-29-2011, 10:50 PM
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Originally Posted by #2gunsmoke View Post
Twins with stock DV's and 5x.012" injectors, sweet. Good thing you have a air to water intercooler to keep all that fuel cool with that huge #5 plate.

So are you going to buy an ice machine to run in the bed while your driving the truck around to keep the cooler stocked with ice?
what are you trying to say?

1997 white dodge cummins 2500 sport. s366, ats 3 piece exhaust manifold, 4000gsk, 60lb valve springs, 191 delivery valves, no plate, 5x.012, 18*timing, ofv, full rack travel, 3"carlie lift. built nv4500.
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post #11 of 22 (permalink) Old 10-29-2011, 10:59 PM
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What isn't he trying to say?

1996 2500: Loud and slow

2006 2500: Excessive chrome
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post #12 of 22 (permalink) Old 10-30-2011, 09:23 AM
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Why does everyone have to hate on a new guy trying to ask a few questions and see if this truck is really worth it. I say it is but its really up to the owner and what you want to use the truck for towing, racing, pulling truck ect. Give him some slack.

1995 2500 4X4 #0 plate 4K GSK 60# springs 5 inch straight pipe 17in weld with 315 Cooper ATR. Built trans in the process.
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