2006 Hennessey Viper Venom 800R

October 29th, Las Vegas – American engineering has always been known for it’s large and brutish engines and this Venom Viper 800 takes maximum advantage of this philosophy. It has an engine punched out to nearly ten liters and gets a 585 CID upgrade good for 810 bhp and 810 ft lbs of torque.

Unlike Hennessey’s 1000 bhp Venoms, this one is normally aspirated, but can almost reach the same levels of performance: 0 – 60 mph in 2.9 seconds, top speed over 230 mph and a 1/4 mile time of 10.88 @ 136 mph with Michelin Pilot Sport 2 tires.

These incredible figures are possible due to an extensive engine tuning program that takes Hennessey a little over twelve weeks to perform. From the crankshaft up, every aspect of the motor is reworked, resulting in something almost entirely new. Air enters through a cold air induction system to reported heads, gets compressed by new forged pistons and exits through a big bore custom header and exhaust system. At 5500 rpm, you can bet this swallows about five times the normal amount of fuel.

The process starts by boring out a new block that is sleeved. A Hennessey crank is then secured with new billet main bearing caps and attached to Manley Rods and forged pistons. The valvetrain is similarly redone with heavy duty valve springs, lifters and new throttle bodies.

Surprisingly, despite the immense power, the standard transmission is used and sends power through a beefier clutch to the rear Quaife LSD.

Completing the package, Hennessey upgrades the suspension with an adjustable KW Coil-Over suspension and a Brembro big brake kit. These are hidden behind custom three peice wheels measure 19 and 20 inches respectively.

Also included on the bright yellow show car is Hennessey’s now signature Viper SRT Coupe body kit which includes a ‘VenomAero’ front bumper and rear ‘Daytona’ spoiler.

The Official debut of the 800R will take place on the Dupont stand at 10 am on Tuesday, October 31 at the SEMA Auto Show.

Story by Richard Owen for Supercars.net

2006 Hennessey Viper Venom 800R Gallery

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In Detail

submitted by Richard Owen
price $ $ $157 000 USD
engine V10 w/Manley Rods, Hennessey Crank, Exhaust, Intake, Camshafts
position Front Longitudinal
aspiration Natural
displacement 9586 cc / 585 in³
bore 107.95 mm / 4.25 in
stroke 103.38 mm / 4.07 in
compression 11.1:1
power 604.0 kw / 810 bhp @ 4200 rpm
specific output 84.5 bhp per litre
driven wheels RWD w/Quafe LSD
front tires Michelin Pilot Sport 2
rear tires Michelin Pilot Sport 2
front brakes Brembro Discs
f brake size mm / in
rear brakes Brembro Discs
r brake size mm / in
front wheels F 48.3 x 25.4 cm / 19 x 10 in
rear wheels R 50.8 x 33.0 cm / 20 x 13 in
f suspension KW Adjustable Coil-Overs
r suspension KW Adjustable Coil-Overs
gear ratios :1
top speed ~370.1 kph / 230 mph
0 – 60 mph ~2.9 seconds