head differences - Competition Diesel.Com

dangerous06 · 02-24-2017, 08:35 AM

Can someone give a break down on the heads from 89 to 96 any major changes? Which is best? Can you use a 91 on a 96?

R1raptor · 02-24-2017, 08:52 AM

Some of the early models had a 9mm injector tip. The later models had 7mm but Cummins makes a sealing washer with a bushing to run 7mm injectors. That's the only difference I know of.

badbowtie · 02-24-2017, 02:31 PM

There are also some bolt holes not machined the same. I put a late model 12v head on an old non ic engine and had to drill and tap a couple of bolt holes.

96 3500 5x018 7mm dvs 64.5sxe
90 d350 5x010 hx35

02-24-2017, 08:35 AM	#1
dangerous06 Name: dangerous06 Title: diesel tech Status: Not Here Join Date: Mar 2008 Location: Escondido CA Member`s Gallery Posts: 3,564	head differences Can someone give a break down on the heads from 89 to 96 any major changes? Which is best? Can you use a 91 on a 96? __________________ E.D. 66-74-091, T-4 exhaust, 2 Micron filter pre CP3, EFI, S&B intake, ARP 625 head studs, 182-214 Hamilton Cam,springs and push rods,40% injectors, Banks Intercooler, T&C CP-3 & PRV, Built 48RE, 5" exhaust,Carrillo rods, Pacbrake!

02-24-2017, 08:52 AM	#2
R1raptor Name: R1raptor Title: Diesel Enthusiast Status: Not Here Join Date: Nov 2011 Location: North florida Member`s Gallery Posts: 127	Some of the early models had a 9mm injector tip. The later models had 7mm but Cummins makes a sealing washer with a bushing to run 7mm injectors. That's the only difference I know of. __________________ 93 chevy 3500 : 215hp p-pump, 5sp, 19, afc tuned ,plate delete , 3.54 d80 , slipping clutch. 83 chevy 3500 : 215 hp p-pump,5sp,19,afc tuned,plate delete,rack plug, valair ceramic single,3.42 14b, Vintage air, in need of twins.

02-24-2017, 02:31 PM	#3
badbowtie Name: badbowtie Title: custom engine daydreamer Status: Not Here Join Date: Apr 2008 Location: Plainfield IN Member`s Gallery Posts: 475	There are also some bolt holes not machined the same. I put a late model 12v head on an old non ic engine and had to drill and tap a couple of bolt holes. 96 3500 5x018 7mm dvs 64.5sxe 90 d350 5x010 hx35 __________________ 1996 3500 4x4 5spd 1991 D350 5spd