6.9 and 7.3 same block? - Ford Powerstroke Diesel Forum
6.9L IDI Diesels Technical discussion of topics related to vehicles powered by the 6.9 Liter In-Direct Injection Navistar engines.

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post #1 of 3 Old 06-16-2009, 03:21 AM Thread Starter
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6.9 and 7.3 same block?

I just got a IH 2 ton with a seized? 6.9 in it,,I was wondering if a 7.3 IH would bolt up in its place,,I have located several 7.3's,,,,,Thanks in advance....Parker

Just got a F-350 with a 6.9
And a s-1900 with a siezed ? 6.9
Been running gas Int. 1600's for 20 years hauling firewood
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post #2 of 3 Old 06-16-2009, 05:54 AM
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It should fit. There are some differences between the two, but externally they are pretty much the same. A 7.3 should swap in pretty easily.

'02 F-350 lariat cc 4x4 drw
ts 6 pos.(custom tunes coming soon)
afe II, mbrp 5", zoodad, ccv mod,
overboost annihilator,
bullydog big woof II w/ high flow outlet,

'02 excursion limited 4x4
4" lift on bfg 35" mt's
afe II, 4" ss exh.

"the dyno-beast" '05 vw jetta tdi
bone stock, (for now)
43+mpg highway
(wife's rig) 1500hp/2000tq
Ok, ok, so I may have added a zero or 2.
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post #3 of 3 Old 06-16-2009, 05:56 AM
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The swap would be easy pretty good replacement. As far as the blocks there are several differences!

Project Frankenstein

1997 Ford F-350, Dually conversion, Cobra 29 LX CB, 12000 watt converter, All LED lights, TW tunes, 4" DP, Napa Intake, coolant filter, 140cc Injectors and lots of running lights.

Originally Posted by XPLOSIV View Post
Thanks. I'll give er a good wackin in the morning.
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