7.3 manifold swap - 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 16 Old 01-11-2009, 07:39 PM Thread Starter
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7.3 manifold swap

I am needing to know if the 6.9 and 7.3s will interchange exhaust manifolds. Im under the impression that all major hardparts have the same bolt patterns but wanted to make sure

'79 F250 6.9L (WVO-mobile)
(^Not done yet)
'74 F250 7.5L (500HP C6 4"lift 33s)
(^Blew it the 19th)
'01 F250 7.3 (Future WVO-mobile)(My dads)
'06 Mustang GT 5SPD
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post #2 of 16 Old 01-11-2009, 07:45 PM
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idk but heres a bump


1999 F250 CC SB 4x4 4r100 ts chip w/ php tunes
1989 F350 CC LB 4X4 N/A 7.3l IDI zf5 swapped and rebuilt engine in. sold
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post #3 of 16 Old 01-11-2009, 07:49 PM
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I seriously doubt it. The heads arent even the same.

Nick
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post #4 of 16 Old 01-11-2009, 07:53 PM Thread Starter
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Ok thanks, I have never messed with 6.9 before. Somone told me the heads were similar. This is just my new project Im working on.

'79 F250 6.9L (WVO-mobile)
(^Not done yet)
'74 F250 7.5L (500HP C6 4"lift 33s)
(^Blew it the 19th)
'01 F250 7.3 (Future WVO-mobile)(My dads)
'06 Mustang GT 5SPD
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post #5 of 16 Old 01-11-2009, 07:55 PM
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well, just to make sure, let some others respond on here. I dont think it ill work.

Nick
E99/CC/Lariat/Factory Wide Body Kit
"The Mistress"
Power Hungry Performance HYDRA Chip
Custom Tuned by Bill@PHP, Tony Wildman@Total Diesel Performance and Lars@Gearhead



D66 w/Dieselsite WW2, Full Force 250/100s, Adrenalin HPOP, Built Trans, Walbro Fuel Pump, S&B Intake, 6" Stacks, Leveling Kit, Eagle Alloy Wheels, 315/75/16 Grabber AT2s & Much More




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post #6 of 16 Old 01-12-2009, 05:13 PM Thread Starter
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i found a couple companies that make Oem replacments. they say they interchange. Thanks anyway guys

'79 F250 6.9L (WVO-mobile)
(^Not done yet)
'74 F250 7.5L (500HP C6 4"lift 33s)
(^Blew it the 19th)
'01 F250 7.3 (Future WVO-mobile)(My dads)
'06 Mustang GT 5SPD
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post #7 of 16 Old 01-12-2009, 05:22 PM
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Lets see some pics of the trucks!

Babe The Blue OX



2008 Ford F-450, TumbleWeed Headache Rack, B&W Gooseneck, 15% tinted windows, 120 Gal Transfer tank, Cobra 29 LX CB, 1200 watt converter, PIAA lights, Sinister goodies, S&B Intake and lots of running lights.

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Thanks. I'll give er a good wackin in the morning.
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post #8 of 16 Old 01-13-2009, 06:15 AM Thread Starter
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Ill have to get back to ya on that. right now Its like 7 degrees with a -4 degree wind chill
I only have a picture of my car on my computer.

'79 F250 6.9L (WVO-mobile)
(^Not done yet)
'74 F250 7.5L (500HP C6 4"lift 33s)
(^Blew it the 19th)
'01 F250 7.3 (Future WVO-mobile)(My dads)
'06 Mustang GT 5SPD
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post #9 of 16 Old 01-13-2009, 02:49 PM
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Wow you guys, come on we are forgetting to ask a VERY important question.

When you are refering to a 7.3, do you mean 7.3 powerstroke, or 7.3 IDI (1987-1994 diesel)?

If you are talking about the powerstroke, then no they wont interchange. If you are talking about a 7.3 IDI then yes, they will.

Good luck and use lots of penetrating lube before you start

-Justin-
1985 Ford F-250 with a 6.9 IDI/T-19 4speed 4x4
Paint, Eagle Alloys, Kelly Safari TSR's, ATS turbo, gauges

2004 Jetta TDI 5 speed
2004 2wd Excursion Limited 6.0. Testing how loyal I am to Ford
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post #10 of 16 Old 01-13-2009, 03:28 PM
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not trying to steal this thread...but is there a such thing as 'headers' for diesels?

-Matt
1989 F350 7.3
2001 F250 7.3
"If its smokin' its strokin!"
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