Thursday 3rd October 2019

Claimed 1,842hp output for Hennessey 'Fury' V8

First specs emerge for Hennessey's latest hypercar; three times the power of an M5 is just the start...

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"Making fast cars faster since 1991" goes the claim on Hennessey's website; they're known for nothing else, really, though it's great trick to have if you are going to have just the one. Hennessey will make you a 1,000hp McLaren, an 800hp Cadillac Escalade and a 1,200hp Corvette, for some idea of how much faster they do. But what if those just aren't fast enough? Well, you'll need a Hennessey Venom F5, all 1,842hp, 1,193lb ft and 6.6-litres of it.

Once upon a time the Hennessey Venom was built using some Elise bits and bobs; this F5 update is one that was first seen in 2014, various claims, updates and promises following in the five years since. Now, nearly two years after the Venom made its debut at the 2017 SEMA show, it looks like the project is making some tangible progress.

'Fury' is the name given to the Venom's engine, which seems wholly appropriate. Once a Chevy LS engine, it's now 6.6-litres, with forged aluminium pistons, an "extreme duty" billet steel crank, Inconel exhaust valves, forged steel conrods, two enormous turbos and all manner of other expensive components. It revs to 8,200, making peak power of 1,842hp at 8,000rpm, with maximum torque of 1,193lb ft delivered at 5,500rpm; apparently 1,000lb ft it available from 2,000-8,000rpm - hell's bells. There's nothing further on the gearbox, so it would seem the seven-speed single-clutch automated manual can take it...

The aim remains the same as it ever did, though: build the fastest car in the world, as the original Venom once was. Of course Bugatti has somewhat raised the bar recently, though Hennessey remains confident: "This is a very important milestone in the building of our all new Venom F5... With over 1800bhp and a curb weight of less than 3000 lbs, the Venom F5 will offer the best power to weight ratio on the market. We plan to begin testing our first car later this year."

Looks like progress is slowly but surely being made, then, as the race to go beyond 300mph intensifies. And given Hennessey's previous form, plus the formidable spec of this car, who would bet against them? 310mph works out at a nice, round 500kph, don't forget...

 

 

[leakymanifold]

Is it emissions compliant? Can't see any catalytic converters. If it isn't then it's playing by another rule book compared to 'eggs and Bugatti and makes it much easier to make big power.

[Barry Homo]

It's a billet Noonan LS and I really want one for my car

[triathlonstu]

Is the image of Hennessey leaning on the car a render?

[kambites]

leakymanifold said:

Is it emissions compliant? Can't see any catalytic converters. If it isn't then it's playing by another rule book compared to 'eggs and Bugatti and makes it much easier to make big power.

Surely the cats would be downstream of the turbo so wouldn't be on that picture?

[martin12345]

I know I'm being a pedant, but when the numbers don't add up it makes me doubt the claims

1842 BHP @ 8000 RPM requires 1209 lbsft torque (Power = Torque x RPM / 5252) - more than the claimed peak torque @ 5500 RPM

If 1000 BHP @ 8000 RPM, then its 1523 BHP


Yes I do realise are all HUGE numbers but when they don't add up then it makes you wonder they've ever measured them or just estimated them
and yes it will be so unbelievably fast it will make no difference and probably can't get traction to put half of it down

But it just annoys me when people make claims that are just wrong


PS - for once this is not PH making an error - exactly the same numbers are on the Hennessy website
Interestingly - claims it has catalysts

Everything is either "high flow" or "extreme duty" !!


Below is copied from their website

Hennessey Venom F5 V8 Engine Specifications:

• Power: 1817 bhp @ 8,000 rpm
• Torque: 1,193 lb-ft @ 5,500 rpm
• Redline: 8,200 rpm
• Displacement 6.6 liter (400 CID)
• Bore: 4.125 in.
• Stroke: 3.750 in.
• Billet aluminum intake manifold with integrated air to water intercooler system
• Forged aluminum pistons (10.0:1 compression ratio) with steel extreme duty wrist pins
• Forged steel light weight H-bean connecting rods
• Extreme duty forged steel connecting rod bolts
• Light weight extreme duty billet steel crankshaft
• Forged steel V8 engine block with billet main caps, increased cylinder wall & deck thickness & 6 bolts per cylinder
• High-flow aluminum cylinder heads with canted titanium intake valves
• Inconel exhaust valves with dual valve springs
• Extreme duty billet steel hydraulic roller camshaft
• Extreme duty hydraulic roller lifters
• Extreme duty billet steel pushrods
• Extreme duty stainless steel shaft mounted rocker arms
• Dailey Engineering 4 Stage billet dry sump oiling system
• Dailey Engineering Billet CNC aluminum oil pan
• Precision ball bearing twin turbochargers (76 mm billet aluminum
compressor wheels) rated at 1,350 bhp per turbo, making 23 psi boost pressure at 1,817 bhp
• 3D printed titanium turbo compressor housings
• High-flow twin turbo wastegates
• High-flow twin turbo blow-off valves
• High-flow billet aluminum 90 mm dual throttle bodies
• High-flow fuel injectors, 2 per cylinder
• High-flow stainless steel twin turbo headers with 1 7/8 in. primary
tubes
• High-flow stainless steel 3.0 in. twin turbo downpipes
• High-flow catalytic converters
• High-flow 3.5 titanium exhaust system

[JohnCarlisleApeiron]

triathlonstu said:

Is the image of Hennessey leaning on the car a render?

Even allowing for the dodgy scale, he has no shadow and no reflection.

[AmosMoses]

Best of luck to them I really hope they crack 300mph.

[je777]

I've got a wardrobe on wheels that I've gaffer-taped a jet engine to.

That'll be faster.

And just as futile.

[je777]

JohnCarlisleApeiron said:

triathlonstu said:

Is the image of Hennessey leaning on the car a render?

Even allowing for the dodgy scale, he has no shadow and no reflection.

He's a vampire.

[GranCab]

There's a reflection of his leg(s) in the car's door and a reflection of his sleeve in the side window ... could still be a render though.

[phil4]

martin12345 said:

I know I'm being a pedant, but when the numbers don't add up it makes me doubt the claims

1842 BHP @ 8000 RPM requires 1209 lbsft torque (Power = Torque x RPM / 5252) - more than the claimed peak torque @ 5500 RPM

If 1000 BHP @ 8000 RPM, then its 1523 BHP


Below is copied from their website

Hennessey Venom F5 V8 Engine Specifications:

• Power: 1817 bhp @ 8,000 rpm
• Torque: 1,193 lb-ft @ 5,500 rpm
• Redline: 8,200 rpm

So using the above numbers on the Hennessey site, and the formula you kindly provided.

If generating max torque also at 8000 rpm also (flat curve) x 1193 lb-ft divide by 5252 = 1817 bhp

The number they've given.

I appreciate you're saying the max torque is at 5500, but if a flat curve (which is more or less what it can be) from there on... it'll be about the same at 8000rpm.

So their numbers sort of stack up?

[markcoznottz]

kambites said:

leakymanifold said:

Is it emissions compliant? Can't see any catalytic converters. If it isn't then it's playing by another rule book compared to 'eggs and Bugatti and makes it much easier to make big power.

Surely the cats would be downstream of the turbo so wouldn't be on that picture?

There's no question that engine could deliver the numbers, presumably on race gas, but the cats issue is the million dollar question. The black venom at the GFOS was running almost straight pipes, are any of his cars actually road legal in all countries.

[AmosMoses]

I doubt its emissions compliant but as they are a low volume manufacturer I don't think it needs to meet any standards?

[RazerSauber]

All that power at 8k and a red line of 8.2k?? that must be a long as hell gear to get any benefit?

[martin12345]

martin12345 said:

I know I'm being a pedant, but when the numbers don't add up it makes me doubt the claims

1842 BHP @ 8000 RPM requires 1209 lbsft torque (Power = Torque x RPM / 5252) - more than the claimed peak torque @ 5500 RPM

If 1000 BHP @ 8000 RPM, then its 1523 BHP

PS - for once this is not PH making an error - exactly the same numbers are on the Hennessy website
Interestingly - claims it has catalysts

Everything is either "high flow" or "extreme duty" !!

My mistake, it's a PH error !!!! Hennessey are claiming 1817 BHP which is 1193 lbsft @ 8000 RPM which means they have constant torque from 5500 to 8000 RPM.

Somehow PH have used the PS value which is 1841.6PS but said it's BHP

Kind of all makes sense now and sadly turns out to be the usual (and unimportant) difference between PS & BHP

[Hairymonster]

Must admit I thought it was all over once Bugatti breached the 1,000hp barrier - and yet they keep coming.

Apart from a very long runway, where can anyone use this thing to more than about a quarter of its potential?

In 1984, The Fezza Testarossa debuted with its 4.9 V12 and 385hp

In 1999 the Porker (996) 911 turbo was launched with 420hp from its 3.6 Mezger turbo'd flat 6

Now the Merc A45AMG has 415hp from a 2.0 4 cyl

So, I guess in 2035 we'll have a Fiat Panda 0.9 Twinair with 450hp

[ReaperCushions]

Hairymonster said:

Must admit I thought it was all over once Bugatti breached the 1,000hp barrier - and yet they keep coming.

Apart from a very long runway, where can anyone use this thing to more than about a quarter of its potential?

In 1984, The Fezza Testarossa debuted with its 4.9 V12 and 385hp

In 1999 the Porker (996) 911 turbo was launched with 420hp from its 3.6 Mezger turbo'd flat 6

Now the Merc A45AMG has 415hp from a 2.0 4 cyl

So, I guess in 2035 we'll have a Fiat Panda 0.9 Twinair with 450hp

Harris and Metcalfe discuss this on the latest Collecting Cars podcast and I think its absolutely spot on. We've hit peak 'hypercar' and frankly where else is there to go that is in any way enjoyable or usable?

[JohnG1]

VW spent a lot of money on working out if the could hit the big number and paid Andy Wallace to drive it. A lot of engineering and modelling to ensure safety.

Read the reviews online of this guy and his business practises and answer this one question:

Given a nice long straight track and a free ride - would you drive a Bugatti at 250mph or this at 300mph?

As dirty Harry almost said "do you feel lucky?"

[SidewaysSi]

Where does the average Joe go to drive at 250mph? And do people do that sort of thing these days?

[Weekendrebuild]

No extra work on the gearbox / diff ... can see nothing but gearbox drivetrain issues ! Sounds like typical crap engine swap