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Gen3 HEMI Tech Guides & How-Tos by MMX
Real Gen3 HEMI technical guides from the MMX shop — built from dyno work, engine builds, and customer installs. Use this section for lifter failure / tick diagnosis, camshaft pin torque, MDS strategy, stroker break-in, oil pan clearance, and install videos for cams, pistons, and more.
Start with the written tech articles below, then jump to the video sections for cams, MDS, pistons, tuning tools, and supporting parts.
Gen3 HEMI Tech Articles by MMX
Shop-tested writeups from Byron Walker at MMX. These are the best place to start if you are diagnosing a problem or planning a build.
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HEMI Lifter Failure, Tick & P0300
Why Gen3 HEMI MDS lifters fail, early warning signs, and how MDS delete + Hellcat lifters fixes the root causes. -
HEMI Camshaft Pin Tech
Common causes of broken cam pins, proper clamp load, and OEM vs ARP cam bolt torque. -
MMX Stroker Kits, Windage Trays & the Little Man With the Hammer
Stroker kit theory, windage control, and what actually matters in a high-power Gen3 bottom end. -
HEMI Stroker Break-In Instructions
MMX break-in procedure to protect rings, bearings, and cam during first fire and early miles.
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HEMI Engine Building Tech
Build notes and assembly guidance from real Gen3 HEMI engine work at MMX. -
HEMI Oil Pan Clearance Tech
Oil pan clearance issues on stroked / built Gen3 HEMIs and what to check before final assembly. -
Dyno Room Notice: Temperature & Power Differences
Why dyno numbers move with temperature and conditions — and how to compare results fairly.
HEMI How-To Guides Offered by MMX
Price: $38.89
On Sale For: $34.95
On Sale For: $34.95
Price: $38.89
On Sale For: $34.95
On Sale For: $34.95
Tech Section Quick Links
Gen3 HEMI Tuning by MMX
HP Tuners MPVI2 — Installation & Operation Basics for Gen3 HEMI
Basics for getting started with HP Tuners on Gen3 HEMI platforms. Pair this with the correct supporting hardware and a solid base calibration strategy before making power changes.
Gen3 HEMI Tools by MMX
Gen3 HEMI Rod Length Measuring Tool Kit
How we use the MMX rod length measuring tool kit for accurate Gen3 HEMI bottom-end measurements during builds and stroker work.
Drop-In Piston & Rod Tech by MMX
Forged Drop-In Pistons & Rods Installation Instructions
If you are adding nitrous or forced induction to a Gen3 HEMI, protect the short block before you chase power. Forged pistons and rods give a much better chance of surviving repeated WOT pulls than hoping a stock rotating assembly holds. Most Gen3 HEMIs already use a forged crank (5.7L is the common exception that may need crank attention depending on power goals).
Forged Drop-In HEMI Piston & Rod Combos
Shop forged combos here: Forged HEMI Piston & Rod Combos by MMX
Installation & Ring Gapping Tips
Bearing Installation & Clearance
HEMI Camshaft & MDS Tech by MMX
Video guides for Gen3 cam selection, timing, install, MDS delete rationale, and VVT phaser limiter installation. For written diagnosis of lifter failure / tick, start with the HEMI Lifter Failure article.
5.7L HEMI Camshafts Overview
Gen3 HEMI Camshaft Timing Instruction
Why You Should Delete HEMI MDS
Related parts: MMX MDS Delete / Repair Kits
Camshaft Tips & Installation
Related: Cam pin torque tech article · HEMI Camshafts & Valvetrain
VVT Camshaft Phaser Limiter Installation
CNC Ported HEMI Throttle Body by MMX
Customer Install / Demo — Thanks, HEMIFAM
HEMI Performance Exhaust by MMX
Customer Exhaust Demo — Thanks, HEMIFAM
Product: 6.4L 392 HEMI Catless Mid Pipes by Stainless Works & MMX