{{About|the fourth-generation Dodge Viper sports car|general information about the car|Dodge Viper}} {{Use mdy dates|date=September 2019}} {{more citations needed|date=October 2018}} {{Infobox automobile | name = Dodge Viper SRT-10 (ZB II) | manufacturer = [[Chrysler LLC]]<br>[[Chrysler Group LLC]] | image = 2008 ZB Viper SRT-10 blue (cropped).jpg | caption = 2008 Dodge Viper convertible | production = 2007–2010 | model_years = 2008–2010 | class = [[Sports car]] ([[S-segment|S]]) | related = [[Devon Motorworks|Devon GTX]]<br>[[Chrysler Firepower]]<br>[[Alfa Romeo Giulia TZ#TZ3|Alfa Romeo Zagato TZ3]]<br>[[Bristol Fighter (automobile)|Bristol Fighter]] | body_style = 2-door [[roadster (automobile)|roadster]]<br>2-door [[liftback]] [[coupé]] | assembly = [[Conner Avenue Assembly]], [[Detroit]], [[Michigan]], United States | engine = Odd firing {{convert|512|cuin|L|1|abbr=on|order=flip}} ''[[Viper engine#Fourth generation|Viper EWE]]'' [[V10 engine|V10]] | powerout = {{convert|600|hp|PS kW|0|abbr=on}} at 6,000&nbsp;rpm<br>{{convert|560|lbft|0|abbr=on}} at 4,600&nbsp;rpm | transmission = 6-speed ''[[Tremec TR-6060 transmission|Tremec TR6060]]'' [[manual transmission|manual]] | wheelbase = {{convert|98.8|in|mm|abbr=on}} | length = {{convert|175.6|in|mm|abbr=on}} | width = {{convert|75.7|in|mm|abbr=on}} | height = {{ubl |'''Coupé:''' {{convert|47.6|in|mm|abbr=on}} |'''Convertible:''' {{convert|48.6|in|mm|abbr=on}} }} | weight = {{ubl |'''SRT-10:''' {{convert|3460|lb|kg|0|abbr=on}} |'''ACR:''' {{convert|3408|lb|kg|abbr=on}} }} | predecessor = [[Dodge Viper (ZB I)]] | successor = [[Dodge Viper (VX I)]] }}

The '''Dodge Viper SRT-10 (ZB II)''' is the fourth-generation Viper [[sports car]]. Introduced at the 2007 [[North American International Auto Show]], the car was similar to its predecessor on the exterior but had undergone notable mechanical changes.

== History and development == [[File:Dodge Viper 08-10 coupe.jpg|thumb|Dodge Viper (ZB II) coupé]] [[File:Dodge Viper 2008 SRT10 Roadster Cockpit LakeMirrorClassic 17Oct09 (14620617123).jpg|thumb|Interior]]

For the 2008 model year, engine capacity was raised to {{cvt|8382|cc|L cuin|1|abbr=on}} which also resulted in power output being raised to {{convert|600|hp|PS kW|0|abbr=on}} at 6,100 rpm and {{convert|560|lbft|Nm|0|abbr=on}} of torque at 5,000 rpm. The engine was developed in collaboration with [[McLaren Automotive]] and [[Ricardo Consulting Engineers]] and included better flowing heads with larger valves, Mechadyne cam-in-cam [[variable valve timing]] on the exhaust cam lobes, and dual electronic throttle bodies.<ref name="viper505">{{cite web |url=http://www.automobilemag.com/am/2006/dodge/viper/specifications.html |title=2008 Dodge Viper Specifications |accessdate=April 24, 2025 |archive-date=October 18, 2012 |archive-url=https://web.archive.org/web/20121018050504/http://www.automobilemag.com/am/2008/dodge/viper/specifications.html |url-status=dead }}</ref> Other modifications included a new camshaft profile and valve-springs, resulting in improved valvetrain stability allowing the rev limit to be raised by 300&nbsp;rpm. Additionally, an [[Electronic control unit|Electronic engine control]] developed by [[Continental AG]] was implemented; the controller can monitor the crankshaft and cylinder position up to six times during each firing and has 10 times more processing power than the previous unit.{{Citation needed|date=August 2022}}

No notable exterior changes were present on the new generation of the Viper except a vented engine cover. The [[Borg-Warner T-56 transmission|Tremec T56 transmission]] was replaced with a new [[Tremec TR-6060 transmission]] with triple first-gear synchronizers and doubles for higher gears. The rear axle was also replaced and now had a [[GKN]] ViscoLok speed-sensing limited-slip differential that helped in attaining maximum grip for the tires. New Michelin Pilot Sport 2 tires increased grip and driver feedback and, along with revised suspension system (springs, anti-roll bars, and shock valving).

Another notable change was the reworked exhaust system; previous third-generation cars had their exhaust crossover under the seats which resulted in a large amount of heat going into the cockpit, which was done initially to help improve the car's exhaust note, since the first two generations of the Viper, which had no crossover, were criticized for their lackluster exhaust notes.

There were also notable changes to the car's electrical system, including a 180-amp alternator, twin electric cooling fans, electronic throttle bodies, and completely new VENOM engine management system. [[CAN bus]] architecture had been combined with pre-existing systems to allow for regulatory compliance. The fuel system was upgraded to include a higher-capacity fuel pump and filtration system.<ref>{{cite web |title= First Look: 2008 Dodge Viper Coupe and Convertible |url= http://www.motortrend.com/roadtests/exotic/112_0702_2008_dodge_viper/engine.html |work= |publisher=Motor Trend |accessdate=June 18, 2008 }}</ref> {{clear}}

== Variants == === Viper SRT-10 ACR === [[File:09 Dodge Viper ACR (6170720919).jpg|thumb|right|Dodge Viper SRT-10 ACR]] The Viper SRT-10 ACR ('''A'''merican '''C'''lub '''R'''acer) is a track-focused, performance-oriented variant of the Viper SRT-10. The intention was to combine Dodge's racing DNA into the [[Street-legal vehicle|road legal]] Viper to produce a car that was fast, agile and lightweight without compromising its normal driving identity. A carbon fiber front splitter, front canards and an adjustable carbon fiber rear wing made the car more responsive around corners and enabled it to generate {{cvt|1000|lb|kg|0|abbr=on}} of downforce at {{cvt|150|mph|kph|0|abbr=on}},<ref>{{Cite news|url=https://www.popularmechanics.com/cars/reviews/a4204/4247053/|title=2008 Dodge Viper ACR Test Drive|date=January 28, 2008|work=Popular Mechanics|access-date=October 16, 2018|language=en-US}}</ref> distributed approximately 45 percent to the front and 55 percent to the rear. The front splitter included three removable protective wear-resistant rub strips, while the stainless steel tension cables provided enough support to absorb the energy from minor upward deflections. In terms of aerodynamics, the car made use of the high-performance autoclaved carbon-fiber to reduce weight. Lightweight filler panels replace the front fog lamps and gloss black lightweight forged aluminum Sidewinder wheels with Michelin Pilot Sport Cup DOT-approved (street-legal) race tires finish off the exterior of the car. The Viper SRT-10 ACR features a signature two-tone paint scheme with a black center section. There is an optional driver's stripe available which features a sewn leather accent on the steering wheel. A monotone paint scheme is available as an option that features a body-color rear wing and dual painted [[Racing stripe|stripes]]. Five colors were available especially for the ACR variant namely; Viper Red, Viper Black, Viper Violet, Viper Bright Blue Metallic, and Viper Very Orange. The interior is driver focused with the deletion of the audio system in favor of a lightweight cover on the dashboard that can be used to mount a lap-timer, deletion of the floor mats, underhood silencer pad and the tire inflator in the optional "Hard Core" package in order to save weight.<ref>{{Cite news|url=https://jalopnik.com/320554/2008-dodge-viper-srt10-acr|title=2008 Dodge Viper SRT-10 ACR|date=November 11, 2007|work=Jalopnik|access-date=October 16, 2018|language=en-US}}</ref> The use of carbon fiber along with the minimalist interior make the car {{cvt|80|lb|kg|0|abbr=on}} lighter than the standard SRT-10 coupe when equipped with the Hard Core package, and {{cvt|40|lb|kg|0|abbr=on}} lighter without.<ref>{{Cite news|url=https://www.motortrend.com/cars/dodge/viper/2009/2009-dodge-viper-acr/|title=First Drive: 2009 Dodge Viper ACR|date=February 1, 2008|work=Motor Trend|access-date=October 16, 2018|language=en-US}}</ref> Power remained the same as the SRT-10 but the maximum speed was reduced to {{cvt|290|kph|mph|0|abbr=on|order=flip}} for the 2008&ndash;2009 models and {{cvt|296|kph|mph|0|abbr=on|order=flip}} in 2010 models with the redesigned wing endplates.<ref>{{Cite news|url=https://www.motorauthority.com/news/1039003_2010-dodge-viper-srt10-acr-preview|title=2010 Dodge Viper SRT10 ACR Preview|date=November 25, 2009|work=Motor Authority|access-date=October 16, 2018|language=en-US}}</ref> The SRT10 ACR features a suspension system that includes adjustable coil-over racing [[Shock absorber|dampers]] from KW Suspensions and two-way adjustable shocks. The dampers and forks are made from solid aluminum billet and are optimized for increased weight reduction and performance. Stopping power comes from StopTech two-piece, slotted lightweight rotors combined with the Viper SRT10's [[Brembo]] calipers. This setup reduces rotating inertia and unsprung mass, improves brake cooling, and significantly reduces fade even under extreme conditions. Due to the improved brakes, the car stops from {{convert|60|mph|0|abbr=on}} in less than {{convert|100|ft|m|0|abbr=on}}. Braking from {{convert|80|mph|0|abbr=on}} is shorter by {{convert|11|ft|m|0|abbr=on}} than the standard car, steady-state lateral grip has improved by 0.11 [[g-force|g]], and improved transient dynamics through the salom bump up the average speed by {{convert|3.2|mph|0|abbr=on}}.<ref>{{Cite news|url=https://www.roadandtrack.com/new-cars/car-comparison-tests/reviews/a20265/evil-twins-dodge-viper-srt10-vs-srt10-acr/|title=Evil Twins: Dodge Viper SRT10 vs. SRT10 ACR|date=February 2, 2015|work=Road & Track|access-date=October 26, 2018|language=en-US}}</ref>

=== Viper SRT-10 ACR X === The Viper SRT-10 ACR X is a more powerful, track only, limited edition variant of the Viper ACR, produced at the end of the fourth generation Viper's production run. The ACR X is powered by the same {{convert|8382|cc|L cuin|1|abbr=on}} V10 engine which powered all of the fourth generation cars but received a power increase to {{convert|640|hp|PS kW|0|abbr=on}} at 6,100 rpm and {{convert|605|lbft|0|abbr=on}} of torque at 5,100 rpm.<ref name="caranddriver"/> The [[KW automotive|KW]] suspension is adjustable and higher spring rates allow the chassis to maximize grip from the special 18-inch-front and 19-inch rear [[Michelin]] racing slicks.<ref>{{Cite web |title=KW partners in automotive /// Chrysler Viper ACR SRT10 |url=http://int.kw-suspension.com/int/kw_partners_viper_acr.php |access-date=2023-03-20 |website=int.kw-suspension.com}}</ref><ref>{{Cite web |date=2017-03-15 |title=25 years KW – the history of KW |url=https://blog-int.kwautomotive.net/25-years-kw-the-history-of-kw/ |access-date=2023-03-20 |website=KW Automotive Blog |language=en-US}}</ref> Various aerodynamic enhancements, such as additional dive planes on the front fascia, provide up to 1,100 pounds of downforce at {{convert|150|mph|0|abbr=on}}, or about 100 more than on the regular ACR. The X's curb weight is claimed to be reduced by {{cvt|120|lb|kg|0|abbr=on}} compared with the standard ACR's weight. The new total—about {{cvt|3200|lb|kg|0|abbr=on}}—was mostly realized by thoroughly stripping out the interior. The dash board and the center console are retained from the ACR and an eight-point, [[SCCA]]-certified [[roll cage]] and [[Fuel cell vehicle|fuel cell]] were fitted, a single racing seat and harness, deletion of side windows, and a removable [[Momo (company)|Momo]] steering wheel complete the interior. Other racing add-ons include a fire-suppression system, transmission and differential coolers, and larger front brake rotors fed by ducting that is more efficient than the street car's. The X's improved power-to-weight ratio improves acceleration by 1/10th of a second as compared to the ACR's 3.4-second 0-to-{{convert|60|mph|0|abbr=on}} time and enables the car to complete the {{convert|1/4|mi|m|0}} in 11.8-seconds at {{cvt|126|mph|kph|0|abbr=on}}. The modifications made to the car help it achieve 1.08 g of skidpad grip, but courtesy to the extreme drag generated by all the downforce-generating aero components, the top speed is reduced to {{cvt|185|mph|kph|0|abbr=on}}.<ref name="caranddriver">{{Cite web |url=https://www.caranddriver.com/reviews/2010-dodge-viper-srt10-acr-x-first-drive-review |title=2010 Dodge Viper SRT10 ACR-X |website=Car and Driver |access-date=October 16, 2018 |date=June 2010 |editor=Mike Sutton}}</ref> {{clear}}

== Production == On November 4, 2009, Dodge Brand President and CEO [[Ralph Gilles]] announced that the Viper would cease production in the summer of 2010.<ref>{{cite web | url=http://www.autotropolis.com/auto-industry-news/dodge-car-brand-ceo-confirms-end-of-dodge-viper-production.html | archiveurl=https://web.archive.org/web/20110720062559/http://www.autotropolis.com/auto-news/dodge-car-brand-ceo-confirms-end-of-dodge-viper-production.html | archivedate=July 20, 2011 | title=Dodge Car Brand CEO Confirms End of Viper Production | last=Ross |first=Jeffrey N. | publisher=Autotropolis.com | date=November 4, 2009 | accessdate=November 4, 2009}}</ref>

Keeping the end of production onto consideration, Dodge announced several special edition Vipers for the 2010 model year:

'''Voodoo edition''': The Voodoo edition (31 units were made) was a special take on the ACR edition which included special black paint and red striping. The Voodoo edition also had a unique interior and steering wheel as well.<ref>{{cite web|url=http://www.caranddriver.com/news/2010-dodge-viper-srt10-acr-voodoo-edition-and-133-edition-auto-shows|title=2010 Dodge Viper SRT10 ACR Voodoo Edition and 1:33 Edition|work=caranddriver.com}}</ref>

'''1:33 Edition''': The 1:33 edition was another take on the ACR edition which celebrates the then unofficial lap record at [[Mazda Raceway Laguna Seca]]. The 1:33 edition had black paint and red two-tone paint. The 1:33 cars have piano black trim inside and red accent stitching on the seats.

'''Final Edition''': On February 10, 2010, Dodge began accepting orders for the Viper SRT10 "Final Edition" models. Only 50 cars were produced (20 coupes, 18 roadsters and 12 ACRs). "Final Edition" cars carried the special build code, "AXZ", and were to be the very last of the Viper cars.<ref>{{cite web|last=Korzeniewski |first=Jeremy |url=http://www.autoblog.com/2010/04/06/dodge-slithers-out-new-2010-viper-final-edition/ |title=Dodge slithers out new 2010 Viper Final Edition models — Autoblog |publisher=Autoblog.com |date=April 6, 2010 |accessdate=May 22, 2010}}</ref>

July 1, 2010 brought about the end of production for the fourth generation of the Dodge Viper. During an event hosted by Dodge and the Viper Club of America, the final iteration of the Viper, which was given a gold finish with contrasting orange stripes, was presented in front of those attending the ceremony. Its completion commemorated the end of production of the ZB II Viper.<ref>{{Dubious|date=October 2018}} {{cite web|url=http://www.dragtimes.com/blog/the-last-dodge-viper-rolls-off-the-line |title=The Last Dodge Viper Rolls off the Line |publisher=DragTimes.com |date=July 2, 2010 |accessdate=July 2, 2010}}</ref> {{clear}}

== Performance == [[File:D 6910 2004 Dodge Viper SRT10 (7378839786).jpg|thumb|right|The 8.4 L Viper V10 Engine with dual throttle bodies/intake manifolds]] * {{convert|0-60|mph|km/h|0|abbr=on}}: 3.79&nbsp;sec<ref name="2008 Dodge Viper SRT10 Coupe and Convertible"/> * {{convert|0-100|mph|km/h|0|abbr=on}}: 7.6&nbsp;sec<ref name="2008 Dodge Viper SRT10 Coupe and Convertible"/> * quickest [[Dragstrip|{{convert|1/4|mi|m|0}}]]: 10.92&nbsp;sec @ {{convert|129.79|mph|km/h|0|abbr=on}}<ref>{{cite web|url= http://www.dragtimes.com/blog/stock-2008-dodge-viper-srt10-convertible-runs-10s |title=Stock 2008 Dodge Viper SRT10 Convertible runs 10′s |date=March 24, 2009 |publisher=dragtimes.com |accessdate=July 13, 2014}}</ref> * top speed: {{convert|202|mph|km/h|0|abbr=on}} (Coupe & Roadster top-up), {{convert|197|mph|km/h|0|abbr=on}} Roadster top-down * slalom: {{convert|74.2|mph|km/h|0|abbr=on}}+ * skidpad average acceleration: 1.05[[g-force|&nbsp;''g'']] (10.4&nbsp;m/s²) * {{convert|100-0|mph|km/h|abbr=on}}: {{convert|270|ft|m|0|abbr=on}}

''[[Car and Driver]]'' magazine tested the car, and found a {{convert|0-60|mph|km/h|0|abbr=on}} time of 3.6 seconds, a {{convert|0-100|mph|km/h|0|abbr=on}} time of 7.6 seconds, and a {{convert|1/4|mi|m|0}} time of 11.5 seconds at {{convert|126|mi/h|km/h|0|abbr=on}}.<ref name="2008 Dodge Viper SRT10 Coupe and Convertible">{{cite web|url=http://www.caranddriver.com/reviews/hot_lists/high_performance/american_performance/2008_dodge_viper_srt10_coupe_and_convertible_short_take_road_test |title=2008 Dodge Viper SRT10 Coupe and Convertible – Short Take Road Test |accessdate=March 18, 2012 |publisher=Car and Driver.com |first=Mark |last=Gillies |date=September 2007}}</ref> Dodge's claims for top speed are {{convert|197|mi/h|km/h|0|abbr=on}} for the Roadster with the top down and {{convert|202|mi/h|km/h|0|abbr=on}} for the Coupe and Roadster with the top up. ''Car and Driver'' also tested the Viper's track performance, and managed a fast sub-3&nbsp;minute lap time around [[Virginia International Raceway]]. The Viper's time, despite hot weather, was faster than the [[Chevrolet Corvette (C6)|Corvette Z06]], [[Ford GT]], [[Nissan GT-R]], [[Porsche 997|Porsche 911 Turbo]], [[Porsche 911 GT3|911 GT3]], and [[Porsche 911 GT2|911 GT2]], [[Audi R8 (Type 42)|Audi R8]], and similar cars. According to ''Car and Driver'' and ''[[Motor Trend]]'', the car's slightly adjusted suspension setup and new differential gave it cornering ability as sharp as before with better control, feedback, and response. {{clear}}

== Lap records == The SRT-10 ACR was put through its paces at the [[Nürburgring]] and clocked in a record time of 7:22.1. Kuno Wittmer piloted a street legal 2010 Dodge Viper ACR to a record lap of 1:59.995 at [[Miller Motorsports Park]] in Tooele, Utah, on Monday, April 11, breaking the 2-minute mark for the first time in a production car on the 3.048-mile Outer Course configuration.<ref>{{Cite news|url=https://www.topspeed.com/cars/dodge/2008-dodge-viper-srt10-acr/|title=2008 - 2010 Dodge Viper SRT10 ACR Review at Top Speed|work=Top Speed|access-date=May 7, 2018|language=en-US}}</ref>

The Dodge Viper ACR and ACR-X have retained a [[List of Nürburgring Nordschleife lap times#Lap times|Nürburgring Nordschleife lap time]] of 7:12.13<ref>{{Cite web |url=http://media.fcanorthamerica.com/newsrelease.do?&id=11535&mid=2 |title=Dodge Viper SRT10® ACR Reclaims Production Car Lap Record at Nürburgring with 7:12.13 |accessdate=September 2, 2017}}</ref><ref>{{cite web |url=https://www.allpar.com/news/index.php/2011/09/viper-reclaims-track-record-at-nuerburgring |title=Viper reclaims track record at Nürburgring |accessdate=September 2, 2017}}</ref> and 7:03.06<ref>{{cite web |url=http://www.drivesrt.com/news/2012/02/the-viper-acr-x-laps-the-nurburgring-nordschleife-in-703.html |title=Video: The Viper ACR-X laps the Nürburgring Nordschleife in 7:03. : driveSRT News |publisher=Drivesrt.com |accessdate=September 25, 2015 |url-status=dead |archiveurl=https://web.archive.org/web/20150926024950/http://www.drivesrt.com/news/2012/02/the-viper-acr-x-laps-the-nurburgring-nordschleife-in-703.html |archivedate=September 26, 2015 }}</ref> respectively, beating cars worth tenfold the price. {{clear}}

== References == {{reflist|30}} {{Dodge timeline}} {{Dodge timeline 1980 to date}}

[[Category:Cars introduced in 2008]] [[Category:Cars discontinued in 2010]] [[Category:Rear-wheel-drive vehicles|Viper]] [[Category:Dodge vehicles|Viper ZB II]] [[Category:Sports cars]]