I just traded two 4-53 DD for what I was told is a recently rebuilt 7.3L. I want to find more info on this engine but cant find anything based on the numbers on it. How can I tell what model and year the engine is? I need HP rating, Max RPM and basically all the info I can get. I plan on using it in a Marine application. How do I know if I can install a turbo?
Also whats the right way to refer to it?
7.3L IDI V8 International Diesel
7.3L IDI V8 Ford Diesel
7.3L IDI Navistar International
Numbers on the engine:
Top of the block
What I believe is the intake manifold part number: 1804357C4
3D U2 U5 13373
Front of the Engine
Again any information you can lend a hand with would be greatly appreciated.
The oil fill spout is located on the IP drive gear cover.
Just to the right of the drive gear cover at the rear of the cover there is a flat place on the block between the drive gear cover and drivers side head.
Wipe the oil off and you will see the block serial number.
The first group of numbers will have either 69 or 73 in them.
69 would indicate a 6.9, 73 would be a 7.3.
Example, mine starts with 69D U2U and is an 87 6.9 block.
Picture better than words.
The blue circle around the temp sensor at 11:00 position, but before the silver valley pan is where the number is located.
6.9 NA HP 175
7.3 NA HP 185
Max RPM under load is usually around 33 or 34 hundred, same either engine.
Max RPM no load is usually around 3500, same either engine.
Turbo, sure, just keep the boost under 15 PSI on a 7.3 or 10 to 12 PSI on a 6.9.
The exact year makes no difference on the 7.3.
Mid year 85 to 87 6.9 blocks have some advantages over the earlier years.
Technically, 7.3 IDI Navistar International for the name.
86 F250 HD 6.9 IDI ATS turbo "not exactly" stock 4x4 T19 BW1345 3.55LS both ends D60 front, 10.25" Sterling rear, ram air, dual stacks.
I would guess that's a 7.3 since it has the solid state glow plug controller but that could have been retrofitted. You can also check by seeing what size socket fits on the head bolts. 7/16 means it's a 6.9, 1/2 means a 7.3
Adding a turbo shouldn't be an issue since many of us have been running them for years on our 6.9s and 7.3s.
1986 F250HD Ex cab Fresh built up 6.9L diesel, Lariat AC leather seats power everything w/full cluster, sterling rear 3.08LS gears, E4OD trans, ram intake ATS 088 turbo
1986 F150 Ex cab Lariat rollercam 5.0L on LPG AOD trans 3.55 gears 390 000Ks
even if its salt water, he could be using a water to water heat exchanger. that'd be the smart way even if its fresh water. so you can keep coolant/elc/src's in the system. better for keepin her at operating temp as well.
1990 F-350 LARIAT 4x4 7.3L IDI diesel ZF5. 1992 front with cowl induction hood, 1997 doors and tailgate. 2004 6.0l intercooler, PSD heated power and signal mirrors. AMSOIL bypass system, full synthetic system. 5.38's, 46" tires, 20" wheels, 12" lift with shackle reversal front, shackle flip rear. Ladder bars in the rear, 2" hydraulic assist steering, hydroboost brakes, onboard dual compressor air system. twin air horns, black interior, 100 gallon in-bed tank. 94 IDI-T motor, SMF conversion.
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