The Texas Speed Chopacabra 5.7L Hemi Camshaft brings the Chopacabra idle to the Gen III Hemi. It is a 214/228 duration grind with .527"/.522" lift on a tight 108 degree lobe separation angle, designed to run on the factory valve springs and the factory torque converter so a 5.7L Hemi owner can get a loud, choppy idle without a full valvetrain overhaul.
Texas Speed measured a gain of 43 horsepower and 11 lb-ft of torque at the crank on a stock 5.7L with the truck intake manifold and short runner valve, stock heads, an MDS and VVT delete and TSP 2" headers. A Texas Speed MDS delete kit and a cam phaser lockout must be purchased with this camshaft. Factory springs are acceptable, but Texas Speed recommends replacing springs with a PAC or Manton spring kit on engines over 75,000 miles.
Specifications
- Duration at .050": 214/228
- Valve lift: .527"/.522"
- Lobe separation angle: 108 degrees
- Intake centerline: 108 degrees (108+0)
- Engine: 5.7L Gen III Hemi
- Recommended compression ratio: 10.5:1 or higher
- Valve springs: Factory valve springs; PAC or Manton spring kit recommended for engines over 75,000 miles
- Aftermarket stall converter required: No, factory converter friendly
- Upgraded rear gear required: No
- Operating range: 1,200 to 6,800 rpm
- Required with this cam: Texas Speed MDS delete kit and cam phaser lockout
- Vehicle usage: Daily driver friendly
- Chop level: Choppy
- Dyno test engine: Stock 5.7L, truck intake manifold with SRV, stock heads, MDS/VVT delete, TSP 2" headers
- Tested gains: +43 crank hp, +11 lb-ft crank torque
Note: A Texas Speed MDS delete kit and a cam phaser lockout must be purchased and installed with this camshaft.
Vehicle Applications
Engine covered per Texas Speed: 5.7L Gen III Hemi with VVT. Vehicle list reflects the fitment published by Texas Speed for this part number; confirm the engine in your vehicle is the 5.7L.
Chrysler 300
- 2009 Chrysler 300
- 2010 Chrysler 300
- 2011 Chrysler 300
- 2012 Chrysler 300
- 2013 Chrysler 300
- 2014 Chrysler 300
- 2015 Chrysler 300
- 2016 Chrysler 300
- 2017 Chrysler 300
- 2018 Chrysler 300
- 2019 Chrysler 300
- 2020 Chrysler 300
- 2021 Chrysler 300
Dodge Challenger
- 2009 Dodge Challenger
- 2010 Dodge Challenger
- 2011 Dodge Challenger
- 2012 Dodge Challenger
- 2013 Dodge Challenger
- 2014 Dodge Challenger
- 2015 Dodge Challenger
- 2016 Dodge Challenger
- 2017 Dodge Challenger
- 2018 Dodge Challenger
- 2019 Dodge Challenger
- 2020 Dodge Challenger
- 2021 Dodge Challenger
- 2022 Dodge Challenger
- 2023 Dodge Challenger
Dodge Charger
- 2009 Dodge Charger
- 2010 Dodge Charger
- 2011 Dodge Charger
- 2012 Dodge Charger
- 2013 Dodge Charger
- 2014 Dodge Charger
- 2015 Dodge Charger
- 2016 Dodge Charger
- 2017 Dodge Charger
- 2018 Dodge Charger
- 2019 Dodge Charger
- 2020 Dodge Charger
- 2021 Dodge Charger
- 2022 Dodge Charger
- 2023 Dodge Charger
Jeep Commander
- 2009 Jeep Commander
- 2010 Jeep Commander
Dodge Durango
- 2009 Dodge Durango
- 2010 Dodge Durango
- 2011 Dodge Durango
- 2012 Dodge Durango
- 2013 Dodge Durango
- 2014 Dodge Durango
- 2015 Dodge Durango
- 2016 Dodge Durango
- 2017 Dodge Durango
- 2018 Dodge Durango
- 2019 Dodge Durango
- 2020 Dodge Durango
- 2021 Dodge Durango
- 2022 Dodge Durango
- 2023 Dodge Durango
- 2024 Dodge Durango
Jeep Grand Cherokee
- 2009 Jeep Grand Cherokee
- 2010 Jeep Grand Cherokee
- 2011 Jeep Grand Cherokee
- 2012 Jeep Grand Cherokee
- 2013 Jeep Grand Cherokee
- 2014 Jeep Grand Cherokee
- 2015 Jeep Grand Cherokee
- 2016 Jeep Grand Cherokee
- 2017 Jeep Grand Cherokee
- 2018 Jeep Grand Cherokee
- 2019 Jeep Grand Cherokee
- 2020 Jeep Grand Cherokee
- 2021 Jeep Grand Cherokee
- 2022 Jeep Grand Cherokee
- 2023 Jeep Grand Cherokee
Dodge Ram
- 2009 Dodge Ram
- 2010 Dodge Ram
- 2011 Dodge Ram
- 2012 Dodge Ram
- 2013 Dodge Ram
- 2014 Dodge Ram
- 2015 Dodge Ram
- 2016 Dodge Ram
- 2017 Dodge Ram
- 2018 Dodge Ram
- 2019 Dodge Ram
- 2020 Dodge Ram
- 2021 Dodge Ram
- 2022 Dodge Ram
- 2023 Dodge Ram
- 2024 Dodge Ram
Dodge Ram 2500
- 2009 Dodge Ram 2500
- 2010 Dodge Ram 2500
- 2011 Dodge Ram 2500
- 2012 Dodge Ram 2500
- 2013 Dodge Ram 2500
- 2014 Dodge Ram 2500
- 2015 Dodge Ram 2500
- 2016 Dodge Ram 2500
- 2017 Dodge Ram 2500
- 2018 Dodge Ram 2500
- 2019 Dodge Ram 2500
- 2020 Dodge Ram 2500
- 2021 Dodge Ram 2500
- 2022 Dodge Ram 2500
- 2023 Dodge Ram 2500
- 2024 Dodge Ram 2500
Dodge Ram 3500
- 2009 Dodge Ram 3500
- 2010 Dodge Ram 3500
- 2011 Dodge Ram 3500
- 2012 Dodge Ram 3500
- 2013 Dodge Ram 3500
- 2014 Dodge Ram 3500
- 2015 Dodge Ram 3500
- 2016 Dodge Ram 3500
- 2017 Dodge Ram 3500
- 2018 Dodge Ram 3500
- 2019 Dodge Ram 3500
- 2020 Dodge Ram 3500
- 2021 Dodge Ram 3500
- 2022 Dodge Ram 3500
- 2023 Dodge Ram 3500
- 2024 Dodge Ram 3500
Jeep SRT8
- 2009 Jeep SRT8
- 2010 Jeep SRT8
Vehicle applications reflect the fitment published by Texas Speed & Performance for this part number. Confirm your engine and cylinder head configuration before ordering.
FAQ
What engine does the Texas Speed Chopacabra Hemi Cam fit?
The Chopacabra Hemi camshaft is ground for the 5.7L Gen III Hemi with variable valve timing, as used in Dodge, Chrysler, Jeep and Ram vehicles. Texas Speed lists it for 5.7L engines at 10.5:1 or higher compression.
Do I need new valve springs with the Chopacabra 5.7L Hemi cam?
Not necessarily. Texas Speed designed the .527"/.522" lift to work with the factory valve springs. On engines with more than 75,000 miles, Texas Speed recommends replacing them with a PAC or Manton spring kit.
What else must be purchased with this camshaft?
Texas Speed requires an MDS delete kit and a cam phaser lockout with this camshaft. The dyno test engine also ran an MDS and VVT delete, so plan on both parts and a tune.
Does the Chopacabra Hemi cam need a stall converter?
No. Texas Speed designed it to be factory converter friendly, and no upgraded rear gear is required either, which keeps it practical for a daily-driven Challenger, Charger or Ram.
How much power does the Chopacabra 5.7L Hemi camshaft add?
Texas Speed measured 43 horsepower and 11 lb-ft of torque at the crank on a stock 5.7L with the truck intake and SRV, stock heads, MDS/VVT delete and TSP 2" headers. The main appeal is the aggressive chop with drivability intact.
How does the Chopacabra compare to the Texas Speed BFD Chop Monster Hemi cam?
The Chopacabra is the milder of the two: 214/228 duration on .527"/.522" lift that runs on stock springs and a stock converter. The BFD Chop Monster is 220/230 on .582" lift with a 110 LSA and requires aftermarket springs, pushrods and at least a 2800 stall converter.
