Whats the difference between 1st and 2nd Gens?

[Hutchew]

Ok, can anyone tell me what the difference is between 1st and 2nd gen 5. 9's? I am trying to decide which way to go on my upcoming transplant. Can a P7100 pump be put on a 1st gen, and if so, does that make it the same as a 2nd Gen, or is there a difference in the pistons, camshaft, head or other harder to replace parts? Injectors, turbo, etc are easy stuff, and would probably be changed out regardless of Gen. I'm finding it fairly easy to come up with complete '91-'93 trucks, which would give me all the mounts, wiring, air cleaner, etc for an easy swap, but I don't think I will be happy with the maximum amount of HP and torque that can be obtained with this motor, which leads me to look for a newer motor, but then will the mounts, wiring, etc match up with my first gen truck. Anyway, simple questions, complicated answers... . anyone got any ideas? Thanks guys.

------------------
1985 Dodge W350 CrewCab Shortbed, soon to be Cummins powered. Still gathering ideas... ... have one?
James Hutchens
Albuquerque, NM

 

[Lil' Dog]

Look up CrewCabDiesel, he's been there and done that and I think he has a 2nd gen engine. Lots of good info and pitfalls that he ran into. Looks like he has about the same year truck.

Good luck with your conversion and keep us posted.

J-eh



------------------
Jason Hoffman
Lil' Mack - 89 D250LE 5 Spd 3. 54 LSD Reg Cab. K&N,"tweaked pump", BD Injectors, Banks Pyro/Boost, 3. 5" Exst tail section straight. E&M Custom seats. Bosch H4, PIAA 80W/80W HdLites. 100W Drv,55W Fogs.
237,500 miles (380,000 Kms) 7850 Hrs. Cummins Power Booster member.
The Original Turbo Diesel

Lil' Mack Pics/March 2001

 

[drives mopars]

in humans about 18 to 27 years
some baby boomers usually wait
until say 40plus like me



------------------
1993 w350 ex cab, banks,nv 4500 in
open exaust, pw Injectors are in. Big rig flaps,tach in,. Its loud and goes ok, for a 93,Ham radio Call KK6dm
has ability to communicate any where in the world. Headliner shelf
5 antenna's

 

[CrewCabDiesel]

Hutchew,
I am running a "early 91" Cummins. Benifits are most parts of the conversion are bolt on, over trying to make 2nd gen wiring work on a first gen. Also keep in mind that 89 to "early 91" have 9mm injectors that perform better than most aftermarket 7mm that the newer Cummins come with(talk to Big Don on injectors). Also the earlier Cummins have a HIGHER compression ratio to start with. Over all I like my 1st gen Cummins because it is very simple to work on(don't need a degree in computers to work on it). If you need any help with installion questions just e-mail me or post some questions, there are a bunch of us here that have already done it, and can save you some time, money, and grief.
Kyle

------------------
1985 DODGE 1 ton Crew Cab W/8' box converted to 4X4 in 1999. Upgraged to a non-intercooled 1991 Cummins Turbo diesel & rebuilt 5 speed Getrag in 2001. Freshly rebuilt and Balanced Cummins, Rebuilt NP205, Rebuilt Injector pump and tweaked, Matched Injectors, 3" New Mandrel Bent Exhaust,no muffler, Borgeson Steering Shaft, K&N Air Filter, 3:54 gears, limited slip rear end, 16" Goodyear GSA Wranglers, 16K Reese 5th Wheel Hitch,and LE Package, OEM Cruise Control, and a Sony CD Stereo. If you want to know why I did all of this, 3 kids and I can't stand F**d and Ch**y. Kyle Hoover ,Fruitport, MI.

 

[97-78 Diesel Crew]

I am new to this great site and am in process of converting 1978 CC to 97 12v. auto have complete wiring harness (PDC & PCM). my ?? cover use 97 OEM radiator or after market; am using 97 lower radiator support for IC AC & oil cooler; 3" or 4" exhaust; and ideas for air box do not want to use 97 fender mount. what else is there??
any other suggestions would be appreciated.

------------------

 

[M'staedt]

Check out
http://fostertruck.com/cummins/

This guy put a 2nd gen. 12V and NV4500 into a '72 cab/chassis motorhome. His web site is extremely detailed on the conversion.

------------------
Love them old Mopars
('69 Charger R/T and '78 Li'l Red Express Truck)