Brand new 7.3 cylinder heads. Price is for the pair. Both heads, ready to bolt on. New castings that have never been installed in an engine or heat cycled. No core to send back and no core charge. What you order is what you keep.
Better Than the Day It Left the Factory
The factory 7.3 head was built to a price. Ours is built to last. Every head starts as a brand new casting, then goes through our Full Works process at Tru Cylinder Head and Machine, our own machine shop in Jefferson City, Tennessee. Same crew that has handled our machine work for eight years, same equipment, one standard: if we would not bolt it on our own truck, it does not leave the building.
This is not a head pulled off a shelf and repainted, and it is not something shipped out by a contract shop you will never talk to. It is the best 7.3 head we know how to build, and we put our name on it.
O Ringed or Standard. Your Call.
Choose O ringed and we machine a receiver groove into the deck and set stainless wire in it. That wire drives clamping pressure into the head gasket and locks it in place, so it cannot lift under boost, load or heat. For 7.3 trucks with studs, bigger injectors, a turbo upgrade or a heavy trailer behind them.
Choose standard for a stock or lightly modified truck. Same casting prep, same machine work, same inspection, set up for stock cylinder pressure.
Built for How You Actually Use the Truck:
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Towing heavy: gooseneck, bumper pull, hotshot, anything that lays into the EGTs on a grade
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Street trucks running a tune: where a tired factory head is the first thing to give up
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Strip and sled pull: high cylinder pressure, repeated heat cycles, no room for a lifting head
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Work trucks and daily drivers that have to start every morning and cannot sit in a shop
What Goes Into Every Head:
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New injector cups. Leaking cups are the number one cause of fuel in the coolant on a 7.3. Not on ours.
- New intake valves.
- Crack checked and pressure tested before any machine work starts
- Valve guides and seats cut true to our spec
- New valve seals to keep oil out of the combustion chamber
- Complete valve job, every valve lapped and checked for seal
- Deck surfaced flat on precision equipment for a gasket that seals the first time
- Optional O ringing for maximum clamping pressure under high cylinder pressure
- Final inspection by the people who did the work
A head set up right does more than seal. True seats and a proper valve job mean better airflow and cleaner combustion, which shows up as more power, lower EGTs and better fuel economy.
Why Ours Are Different
Most heads sold online are machined by somebody else and sold under another name. Ours are cut in our own building, on our own equipment, by our own people, and we will tell you the specs we hold. Call and ask. Try that anywhere else.
Priced as a pair. If one head let go, the other one lived through the same heat cycles. Doing one and reusing the other is how trucks end up back in the bay.
Built for guys towing heavy, running a tune, or done doing the same job twice. This is the last head job that truck will need.
FAQ
Are these new or remanufactured?
New. Every head we sell starts as a brand new casting that has never been installed or heat cycled, then goes through our Full Works machine process before it ships.
Do I need to send in a core?
No. No core charge, no core return, nothing to ship back.
Are these better than factory?
Yes. Seats and guides are cut to our spec, every valve is lapped, the deck is surfaced flat, and you can add O ringing, which no factory head has. Every one is inspected by the people who built it.
Should I O ring them?
If the truck is tuned, towing heavy, or making more boost than stock, yes. It is the single best thing you can do to keep a head gasket from lifting.
Will these heads fix my head gasket problem?
Only if the engine is studded and you fix what caused the failure, usually an overheat. Fresh heads on an engine with a cooling problem will fail again. Call us before you buy and we will talk through what you are actually chasing.
How does shipping work?
Heads ship nationwide, with freight quoted per order. In East Tennessee our courier delivers to your shop from Knoxville to Greeneville.
Do you sell to repair shops?
Yes. Shops and fleets can open a wholesale account. Call 865.640.2097.
Rebuilding the whole engine? Pair these with our 7.3 short block, built in house with an OEM overhaul kit, oil cooler and LPOP.
Questions? Call Tru Cylinder Head and Machine at 865.548.8520 or Powerhouse Diesel at 865.640.2097.
