RE: Ford details new 7.3-litre (!) V8 truck engine
Discussion
Immortalisation said:
I understand why they’re putting them out in a lazy state of tune but how much BHP could these theoretically make without going crazy? Roughly 800 if left naturally aspirated and something like 1200 with forced induction?
I suspect they are probably quite tunable. I don't know how tall or heavy they are vs the other engines out there however. Which could make a difference if you are looking at crate engines.GM offer the LS in 7.0 litres and the Dodge Hemi in 6.4 litres. So relatively large displacement performance motors are already pretty mainstream.
I suspect 500hp as a production could be pretty easy with a motor like this. And in the aftermarket with the usual types of bolt on mods and maybe a cam, I'd have thought 80hp/litre is perfectly doable with no very little stress (584hp).
LS engines in very high state of road tune will do about 90-95hp/litre. Race engines you can get a lot more, but would likely be horrid on the road.
7.3 litres @ 95hp/litre = 694hp
But you need to remember it would still have a massive slug of torque compared to many smaller displacement engines.
With boost, assuming the internals are up to it. I'd have guessed 100-150hp/litre, e.g. 730-1095hp. Which would put it on par with the Chevy LS and Dodge Hemi. Remember the Hemi is only giving up .9 litre, at 100bhp/litre that will only be 100hp difference.
Swalsey said:
I didn’t think people would read what I read very carefully - that’s not what I’m referring to. I’ve no doubt that some people justify them but I stand by my point - ‘when a decent car will do’ means I’m addressing needless excess, like commuting, shopping and towing caravans the size of a bungalow. What I said about any thirsty motor means people who have no conscience about rolling around doing 25mpg / less on mundane journeys - it’s needless excess.
For the other replies, yes I’m sure I can take an interest on Pistonheads - I can enjoy my relatively frugal sports car for a few thousand miles a year and my very frugal daily driver without bragging about how many gallons per mile I did. Pistonheads also covers electric cars and hot hatches - are you sure it is for you if you like 7.3 V8s? ??
I know that some people don’t care and roll around with V8 daily drivers but I don’t like extra waste for the sake of it so I’ll pipe up when I feel like it ta ??
Good post man, I love that big v8 but also choose to run a much more efficient car. Having owned over 200 cars including some big v8s etc am no ecowarrior but I do empathise with your stance. Keep on keeping on man, gbn For the other replies, yes I’m sure I can take an interest on Pistonheads - I can enjoy my relatively frugal sports car for a few thousand miles a year and my very frugal daily driver without bragging about how many gallons per mile I did. Pistonheads also covers electric cars and hot hatches - are you sure it is for you if you like 7.3 V8s? ??
I know that some people don’t care and roll around with V8 daily drivers but I don’t like extra waste for the sake of it so I’ll pipe up when I feel like it ta ??
300bhp/ton said:
Not really sure it is fair to claim downsizing. The Triton was only 6.8 litres vs 7.3, that isn't downsizing. The Triton might have been a V10, but that was because it was based on the Ford Modular motor. I believe the 5.4 V8 and 6.8 V10 share the same cylinder capacity. This new engine is certainly a step up from the Triton.
My comment was slightly tongue in cheek.To be fair though the space between the V on the Triton engine is almost big enough to be an extra berth if you removed the intake manifold. Physically it's massive. Makes a surprisingly nice noise though.
tr7v8 said:
Biggest truck that I know individuals owning in Texas is F150 & the Dodge equivalent & they are weekend vehicles used for towing RVs & boats. Multi car ownership is much more common in the US than in Europe. Dailies are typically Toyota Camry's, mid size Honda & Hyundai etc.
In Texas? The best selling vehicle in Texas is the Ford F150 but there are plenty of folk here drive 3/4 and 1 ton pickup trucks as their primary vehicles. There's probably 7 on my street and I'm probably the only guy that uses mine in the way that you describe.Prior to buying my 7.3, I had an F350 with a 6.8 liter V10. It was a fine engine for hauling that truck around unloaded but it would have to change down a gear to get up a hill with a full load. With the power stroke, i could do 80mph in top gear pulling a 6000lbs silver shadow sitting on top of a trailer, and not know it was there. Instead of making 500ft/lbs at 4000rpm like the gas engine does, it makes it at 2000rpm. The new 6.7 liter powerstoke diesels make about 925ft/lbs at 1800rpm.
Mileage when loaded in the powerstroke would probably be about 12-14mpg (US) vs 6mpg(US) for the gas engines.
The triton engines were not easy engines to work on. You pretty much had to lift the body of the frame in order to do spark plugs and they had a propensity to blow plugs which was a fault on those engines.
I suspect that diesels will continue to outsell the gas engines for 3/4 and 1 ton trucks. They have great torque characteristics, run forever and hold their value. The 7.3 is going to be more of a fleet choice as they will be cheaper to buy and the engines will be cheaper to rebuild when they break.
Prior to the tritons, Ford used the 460CI big block which was a fantastic engine. I almost bought a 69 Lincoln MK3 a couple of weeks ago with that motor but the deal fell through.
Edited by alabbasi on Monday 5th August 13:45
A1VDY said:
Swalsey said:
Dave Hedgehog said:
Rest of the world - human action is destroying the planet, what can we do
Merica - bigger engines !
Exactly. Gotta love Americans? No. Any person anywhere daily driving massive trucks or any thirsty motor when a decent car would do needs to have a word with themselves IMO.Merica - bigger engines !
This
Save the planet and turn to electric?
Nah.....lets build more ridiculous sized IC engines and destroy it instead.
No one needs this, its purely aimed at goofy nerdy weaklings with a small cock and weedy arms, the type who'll have an arm hanging out the window with no tri's or bi's and forearms like match sticks looking in vain to impress others. Those who do this don't realise it has the opposite effect ie most will be thinking 'what a w5nker'...
It'll sell like hot cakes..
Swalsey said:
aeropilot said:
Swalsey said:
Exactly. Gotta love Americans? No. Any person anywhere daily driving massive trucks or any thirsty motor when a decent car would do needs to have a word with themselves IMO.
I guess you've not spent much time in the USA then to understand that there really isn't much 'decent car' option (actually none) that would stand a chance of coping what most Americans subject their pick-ups to.For the other replies, yes I’m sure I can take an interest on Pistonheads - I can enjoy my relatively frugal sports car for a few thousand miles a year and my very frugal daily driver without bragging about how many gallons per mile I did. Pistonheads also covers electric cars and hot hatches - are you sure it is for you if you like 7.3 V8s? ??
I know that some people don’t care and roll around with V8 daily drivers but I don’t like extra waste for the sake of it so I’ll pipe up when I feel like it ta ??
It doesn't matter if you think it's needlessly excess, people can drive about in what ever they like. If I could afford to, I'd have a nice 6.2 litre V8 under the bonnet of my car... I wonder if you can gess what car it would be?
irocfan said:
neil1jnr said:
If I could afford to, I'd have a nice 6.2 litre V8 under the bonnet of my car... I wonder if you can gess what car it would be?
can't guess the car - I can say that it'll come from The General (at a guess I'd say a Corvette though)https://en.wikipedia.org/wiki/Ford_Boss_engine
AdeTuono said:
bugger - forgot about them 
Swalsey said:
Some humour at last! Since you're asking, and depending on whether you do this every day or not, some words about reducing climate change, perhaps from the UN (not from Trump please). I hope you enjoy your trip and make use of tunnels with the window down, I'd enjoy being in the tunnel and hearing it 
You must have made your original comment knowing full well you'd be pretty much on your own on PH and to do it in a thread about a massive truck with an equally massive truck makes that assumption almost guaranteed. I'd happily rock around in something that did 1mpg if I could afford it and it merited it over the competition.
AdeTuono said:
irocfan said:
neil1jnr said:
If I could afford to, I'd have a nice 6.2 litre V8 under the bonnet of my car... I wonder if you can gess what car it would be?
can't guess the car - I can say that it'll come from The General (at a guess I'd say a Corvette though)https://en.wikipedia.org/wiki/Ford_Boss_engine
Works for me - and about 17mpg on motorways...which is nice
Lots of horse power talk here. This engine is not designed for it. That's why Ford has the Eco boost. This engine is designed for heavy duty pickup trucks at the smallest or the fleet large truck market (think big box trucks etc) which need torque to get them up a hill.
Basically, a petrol alternative to a diesel engine
Basically, a petrol alternative to a diesel engine
tvrolet said:
AdeTuono said:
irocfan said:
neil1jnr said:
If I could afford to, I'd have a nice 6.2 litre V8 under the bonnet of my car... I wonder if you can gess what car it would be?
can't guess the car - I can say that it'll come from The General (at a guess I'd say a Corvette though)https://en.wikipedia.org/wiki/Ford_Boss_engine
Works for me - and about 17mpg on motorways...which is nice
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