UPDATE :: Return of the Pushrod | Ford's New 7.3L Engine is Actually an OHV V8

CGiron

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The 7.3-liter gas V8 engine delivers high performance in a compact package. Based on decades of commercial engine experience, this 7.3-liter is expected to be the most powerful gas V8 in its class – providing durability, ease of maintenance, and the towing and payload capability customers want. It uses an all-new cam-in-block, overhead valve architecture with cast iron block and forged steel crankshaft for maximum durability
New Ford F-Series Super Duty Pickup Raises Bar Again with Next-Level Capability, Power and Technology | Ford Media Center
 

Tob

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Wow. Ford has "optimized" every square inch of that 7.3 gas engine. I have never seen that on a Ford truck engine to this extreme. The block is thin walled and ribbed throughout. The cast stainless exhaust manifolds are beautiful. Beehive springs. The coil/wire/plug arrangement is very organized and clean. The pan is gorgeous. And pushrods with a roller cam? Yes please!!

__ New 7point three liter engine1.JPG



The rockers are very nice...replete with a needle bearing roller trunion. Just beautiful.

__ New 7point three liter engine.JPG

I like the groove/embedded valve cover seal or gasket too.

This engine would make for a perfect Raptor or CJ from Ford Performance.
 

SID297

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Wow. Ford has "optimized" every square inch of that 7.3 gas engine. I have never seen that on a Ford truck engine to this extreme. The block is thin walled and ribbed throughout. The cast stainless exhaust manifolds are beautiful. Beehive springs. The coil/wire/plug arrangement is very organized and clean. The pan is gorgeous. And pushrods with a roller cam? Yes please!!

View attachment 1549481


The rockers are very nice...replete with a needle bearing roller trunion. Just beautiful.

View attachment 1549482
I like the groove/embedded valve cover seal or gasket too.

This engine would make for a perfect Raptor or CJ from Ford Performance.

Displacement is a rules issue on the CJ.
 

tt335ci03cobra

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I’d love to see what 5-10 years of real honest tech going into ibc ohv design could yield.

•reengineer the pushrod assemble, and entire cam profile to actual a split plane of double the pushrods maybe
•reengineer the cylcinder head to have a lighter load step lifter to lift the valves much less for light duty, as well as a corresponding variable timing implementation
•engineer variable cylinder deactivation that actually works on 2 to 4 cylinders in a cycling fashion when low speed steady state cruising to effectively be running a 1.8 to 3.5L engine so roughly a ~2.65L mill when cruising.

My point is if half the energy that has gone into stuffing tech into huge 4v engines is applied to ohv ibc, a much more efficient design can be had that may well reach 100hp/L with much more average torque and much less physics size. Hell, if the desire is there, high rpm is also attainable.
 
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GTSpartan

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I’d love to see what 5-10 years of real honest tech going into ibc ohv design could yield.

•reengineer the pushrod assemble, and entire cam profile to actual a split plane of double the pushrods maybe
•reengineer the cylcinder head to have a lighter load step lifter to lift the valves much less for light duty, as well as a corresponding variable timing implementation
•engineer variable cylinder deactivation that actually works on 2 to 4 cylinders in a cycling fashion when low speed steady state cruising to effectively be running a 1.8 to 3.5L engine so roughly a ~2.65L mill when cruising.

My point is if half the energy that has gone into stuffing tech into huge 4v engines is applied to ohv ibc, a much more efficient design can be had that may well reach 100hp/L with much more average torque and much less physics size. Hell, if the desire is there, high rpm is also attainable.


GM has basically done all those things you list. Their dynamic fuel mgmt (DFM) does exactly what you describe in #3. To the masses, they still think AFM is still being used, which is no longer the case.

While not all are in production at this point, the tech has been definitely been developed and tested. For all we know, it could be in the works for planned upgrades over the life of the gen 5 small block.
 
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tt335ci03cobra

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I respect Chevy and Dodge for taking pushrod ibc to where they have.

The scatpack at $38-40k is incredible value.

Camaro ss 1le is God’s gift to track rats

I could wax poetic for day.

I’d love to see ford get back in the Ibc game. Now it’s obvious ford knows dohc and is excellent at engineering those engine options, but displacement, fitment and lower cost to produce and repair all lead to ibc ohv now.

The 6.2L 455 camaro ss gets the same mpg as the 460hp 5.0 but makes a solid 35tq additionally, and is nowhere near as high strung.

A well designed 6.3L ford 390 could easily match the 6.2, and cost less to produce and maintain. Dealership service centers would suffer though.
 

tt335ci03cobra

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... too heavy. I made a long post about fitting a 4v head to the 7.3 but it would be +600lbs na all aluminum.
 
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SuperMarauder

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This engine was built to do a job at 2000 RPM under HIGH load for 500,000 miles on 87 pump. And more efficiently than the competition. That head and chamber should nail it at 2000 rpm, and my guess is 600 ft..lbs. on a very lean mix.
 

Fordfourlife

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Anything over 500ft/lbs will be impressive and more then any other gasser currently... The 1997 460 EFI was 400ft/lbs. The 2003 7.3 power stroke turbo diesel was 525ft/lbs for comparison sake.
 

me32

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Anything over 500ft/lbs will be impressive and more then any other gasser currently... The 1997 460 EFI was 400ft/lbs. The 2003 7.3 power stroke turbo diesel was 525ft/lbs for comparison sake.
I would be disappointed if it makes less tq than the PS 7.3. Mostly because the technology is over 15yrs newer. Im hopeing to see at least 550tq at 2500rpm
 

CGiron

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Don´t you folks think it´s time for an update in this old thread? The 6.8 liter V8 Megazilla is coming at 27 th of Sept. Will it be +450 hp? Will it be CGI in the block? Will the the cylinderwalls be thinner that much and the overall size that small that it will fit in more enginebays? It will be lighter with CGI too.
 

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