BACK-TO-BACK DYNO TEST: 6.4L Hemi Gets Intake, Headers, Camshaft!

Ever wanted to see dyno data between intake, headers, and camshaft on a 6.4L Hemi, all back-to-back? Yeah, we did too! This video covers each of our Naturally Aspirated Staged Packages for 6.4L Hemi explained, installed & tuned, and put to the test back-to-back!

Follow along in the shop as we take this 2021 Dodge Challenger R/T Scat Pack from showroom stock, to Stage-1, Stage-2, and Stage-3, with results highlighted throughout. Below are the contents of each Package covered:

Stage-1
• JLT Performance Series-II air-intake system
• National Speed in-house ECU/PCM unlock (for 2015-2021 models)
• SmartAccess cable (for 2018-2021 models)
• Optional JLT Performance air-oil separator
• Optional MotoRad 180° thermostat

Stage-2
• All Stage-1 contents, plus:
• Stainless Works Stainless Power 1.875" primary ID long-tube headers
• OEM Mopar exhaust manifold gaskets

Stage-3
• All Stage-1 & Stage-2 contents, plus:
• COMP Cams Stage-2 HRT 273° camshaft
• COMP Cams phase limiter
• COMP Cams pushrods
• COMP Cams Beehive valve springs
• COMP Cams steel retainers
• COMP Cams locks
• COMP Cams spring seats
• COMP Cams valve seals
• NGK Spark Plugs LZTR6AIX-13 spark plugs
• OEM Mopar SRT Hellcat hydraulic valve lifters
• OEM Mopar SRT Hellcat engine oil pump
• OEM Mopar gaskets & seals
• OEM Mopar fasteners
• OEM Mopar coolant
• Mobil1 0W-40 synthetic engine oil
• Lucas Oil Zinc-Plus break-in oil additive
• Optional OEM Mopar SRT Hellcat 92mm throttle body
• Optional ported OEM intake manifold

We want to hear from you!
Contact Us: https://nationalspeedinc.com/contact
Phone: (910) 332-5901

Connect with National Speed online:
Subscribe to our YouTube channel:    / nationalspeedinc  
Visit our Website: https://nationalspeedinc.com
Like us on Facebook:   / nationalspeed  
Follow us on Instagram:   / nationalspeed  

00:00 - Intro
00:48 - Stage Breakdown
02:15 - Baseline
02:42 - Stage 1 Install
03:40 - Stage 1 Dyno
04:23 - Stage 2 Install
05:12 - Stage 2 Dyno
05:49 - Stage 3 Install
06:42 - Stage 3 Dyno
07:47 - Outro