Industry leading CNC'd HEMI heads. Multiple record settings builds, with NASCAR trophies and championships to back it up

Our Performance Cylinder Heads have shown proven performance after being used on the fastest naturally aspirated 5.7L stock block HEMI Truck and on the two fastest stock block power added HEMI Trucks in the country!

 

What were once known as simply our "Big Valve Heads" have been replaced with the "Premium Big Valve Heads" line. The new Premium Big Valve Heads have the Manley valves with the pro-flow shape. Valve sizes are 2.10"/1.625 for the 6.1 and 2.02/1.575 for the 5.7 head.  The new Manley valves will be running single groove locks with high quality Crower keepers and retainers which blow everything else we've seen away in quality. Essentially, the Premium Big Valve Heads are the best quality components that we can source with the Manley valves and Crower locks and retainers.

 

If the intended valve lifts are under 0.580/0.566" exhaust for the 6.1 heads and 0.566/0.566" for the 5.7 heads the OEM 6.1 springs are the best option, as they have sufficient rate for the fast ramp cams that are out and are the most reliable springs available.  For higher lifts contact us for the various options in valve springs, locators, seals.

 

2003-2008 5.7L HEMI Cylinder Heads **TO ORDER, PLEASE GO TO THE WEBSTORE AT WWW.SHOP.INERTIAMOTORSPORTS.COM**

 

5.7L Inertia Fuel Efficiency Cylinder Heads Package

**See webstore***

  • .030 Milled 5.7L Cylinder Heads

  • Fully CNC ported and hand blended exhaust ports

  • Our Proprietary Valve Job

  • New Valve Seals Installed

  • New 6.1L Valve Springs and Hardware Installed

  • Includes new Cylinder Head Bolts and Head Gaskets

  • 8 Custom Forged Exhaust Pushrods to reduce valve train noise and stiffen performance

  

5.7L Inertia Performance Cylinder Heads       

**See webstore***

  • 5.7L Cylinder Heads

  • Fully CNC and Hand Blended Intake and Exhaust Ports

  • Our Proprietary Valve Job

  • Stock Diameter Intake and Exhaust Valves

  • New Valve Seals Installed

  • Upgraded Valve Springs and Hardware Installed

5.7L PREMIUM Big Valve Cylinder Heads

**See webstore***

  • 5.7L Cylinder Heads

  • Fully CNC and Hand Blended Intake and Exhaust Ports

  • Our Proprietary Valve Job

  • 2.02 Diameter Intake Valves

  • 1.57 Diameter Exhaust Valves

  • New Valve Seals Installed

  • Valve guides are honed to set clearance to new specs.

  • Upgraded Valve Springs Installed

  • Chrome Molley Retainers and Single Groove Locks Installed

* $400 refundable core charge applies if not installed by one of our Authorized Installers

 

6.1L HEMI Cylinder Heads

 

6.1L Inertia Performance Cylinder Heads

**See webstore***

  • 6.1L Cylinder Heads

  • Fully CNC and Hand Blended Intake and Exhaust Ports

  • Our Proprietary Valve Job

  • Stock Diameter Intake and Exhaust Valves

  • New Valve Seals Installed

  • New Valve Springs and Hardware Installed

  

6.1L Premium Big Valve Cylinder Heads

**See webstore***

  • 6.1L Cylinder Heads

  • Fully CNC and Hand Blended Intake and Exhaust Ports

  • Our Proprietary Valve Job

  • 2.10 Diameter Intake Valves, 1.60 Diameter Exhaust Valves

  • New Valve Seals Installed

  • Valve guides are honed to set clearance to new specs.

  • Upgraded Valve Springs Installed

  • Chrome Molley Retainers and Single Groove Locks Installed

  

6.1L Premium Big Valve Boost Heads

**See webstore***

  • 6.1L Cylinder Heads

  • Fully CNC and Hand Blended Intake and Exhaust Ports

  • Our Proprietary Valve Job

  • 2.10 Diameter Intake Valves, 1.60 Diameter Exhaust Valves

  • New Valve Seals Installed

  • Extra hand porting to extract max HP from heavily boosted engines.

  • Upgraded Valve Springs Installed

  • Chrome Molley Retainers and Single Groove Locks Installed

  

6.1L Premium Big Valve Boost Heads w/Large Exhaust Valves

**See webstore***

  • 6.1L Cylinder Heads

  • Fully CNC and Hand Blended Intake and Exhaust Ports

  • Our Proprietary Valve Job

  • 2.10 Diameter Intake Valves, 1.60 Diameter Exhaust Valves

  • New Valve Seals Installed

  • Extra hand porting to extract max HP from heavily boosted engines.

  • Upgraded Valve Springs Installed

  • Chrome Molley Retainers and Single Groove Locks Installed

  

* $1,600 refundable core charge applies if not installed by one of our Authorized Installers

 

2009 "EAGLE" 5.7L VVT Cylinder Heads

 

5.7 VVT Stock Chamber Cylinder Heads 

**See webstore***

  • 2009+ 5.7L Cylinder Heads

  • Stock Chamber Size for 2009+ Vehicle Applications (first generation)

  • Fully CNC and Hand Blended Intake and Exhaust Ports

  • Our Proprietary Valve Job

  • Stock Diameter Intake and Exhaust Valves

  • New Valve Seals Installed

  • A Directional Vein for Increased Performance at High Valve Lifts

  • New Valve Springs and Hardware Installed

5.7 VVT Big Chamber Cylinder Heads 

**See webstore***

  • 2009+ 5.7L Cylinder Heads

  • Large Chamber Size for 2003-2008 5.7L Vehicle Applications

  • Fully CNC and Hand Blended Intake and Exhaust Ports

  • Our Proprietary Valve Job

  • Stock Diameter Intake and Exhaust Valves

  • New Valve Seals Installed

  • A Directional Vein for Increased Performance

  • New Valve Springs and Hardware Installed
The ports are the same for our standard chamber head but I showed the big chamber head which is designed as a retrofit head for 03-08 5.7 HEMI. The big chamber heads on a 03-08 5.7 hemi engine will yield approximately a 10-3/4 compression ratio which will allow a pretty healthy cam to be used without reducing cylinder pressure to a detrimental level.
The Inertia '09+ Hemi heads feature a directional vein as can be seen in the photos and a 6 angle valve job on the intake and a proprietary full radius valve job on the exhaust.

 

* $1200 refundable core charge applies if not installed by one of our Authorized Installers

 

2011+ "APACHE" 6.4L VVT Cylinder Heads

 

6.4 VVT Stock Chamber Cylinder Heads 

**See webstore***

  • 2011+ 6.4L Cylinder Heads

  • Stock Chamber Size for 2011+ Vehicle Applications (Second generation)

  • Fully CNC and Hand Blended Intake and Exhaust Ports

  • Our Proprietary Valve Job

  • Stock Diameter Intake and Exhaust Valves

  • New Valve Seals Installed

  • A Directional Vein for Increased Performance at High Valve Lifts

  • New Valve Springs and Hardware Installed
..

* $1500 refundable core charge applies if not installed by one of our Authorized Installers

 

 

 

Chrysler 3.5L HO V6 Cylinder Heads - NOT AVAILABLE

 

3.5L HO V6 Performance Heads

NO LONGER AVAILABLE

  • 3.5L Cylinder Heads

  • Fully CNC and Hand Blended Intake and Exhaust Ports

  • Our Proprietary Valve Job

  • Stock Diameter Intake and Exhaust Valves

  • New Valve Seals Installed

  • New Valve Springs and Hardware Installed

 

Image Coming Soon!

3.5L HO V6 PREMIUM Big Valve Heads

NO LONGER AVAILABLE

  • 3.5L Cylinder Heads

  • Fully CNC and Hand Blended Intake and Exhaust Ports

  • Our Proprietary Valve Job

  • Premium Intake and Exhaust Valves

  • New Valve Seals Installed

  • New Crower Valve Springs and Hardware Installed

  

* $300 refundable core charge applies if not installed by one of our Authorized Installers

 

Cylinder Head Upgrades

 

Cylinder Head Milling

Increase compression by milling any of our Standard or Premium Big Valve Heads

 $200

Titanium Retainers

Upgrade to Titanium retainers on 5.7L/6.1L Heads

 CALL

Spring Locators

Spring locators for Comp, PAC, Manley or Crower springs on 5.7L/6.1L Heads

 CALL

0.570" Lift Valve Seals

Valve seals for use on cam lifts over 0.570" on 5.7L/6.1L Heads

 CALL

TBA

...

 $

5.7L Crower Spring Upgrade

Crower spring upgrade on 5.7 heads (also, requires spring locators and seals above)

 PLEASE CALL

6.1L PAC/Crower Spring Combo

PAC 1220 intake spring upgrade on 6.1 heads, uses Crower spring on exhaust side, (above locators and seals required with these springs) will handle valve lifts of up to 0.635 intake and 0.610 on exhaust side.

 $275

6.1L PAC/Manley Spring Combo

PAC 1520 intake spring upgrade on 6.1 heads, uses Manley spring on exhaust side, (above locators and seals required with these springs) will handle valve lifts of up to 0.635 intake and 0.610 on exhaust side.

 PLEASE CALL

Chamber and Valve Coating

Coated cylinder head chambers and valve faces with ceramic thermal barrier coating

 PLEASE CALL

Valve Stem Coating

Coat valve stems with molly disulfide dry film lubricant

 $225

ARP Head Studs 5.7 and 6.1

Replaces stock bolts for high output applications. ARP® high performance cylinder head stud kits are precision centerless-ground and thread-rolled to Mil-S-8879 specs. Their black oxide finish protects them from wear and corrosion, and ARP throws in hardened parallel washers for uniform load distribution and accurate torque readings. Keep your cylinders mounted solidly with a set of these ARP high performance cylinder head stud kits.

 PLEASE CALL

ARP Main Studs 5.7 and 6.1

..

 PLEASE CALL

3.5L HO V6 Lash Caps

New lash caps for the 3.5L HO V6 Cylinder Heads to stiffen performance and reduce excessive valve train noise after installing our new V6 camshafts.

 NO LONGER AVAILABLE

5.7L & 6.1L Custom Forged Pushrods

 

These one piece, custom forged pushrods are not only stronger, but also sized based off of our Camshafts' base circles.  These will help remove slack from your valve train and there by lessening excessive valve train noise commonly resulting from aftermarket camshafts.  These are recommend for camshafts with durations of 218 duration or more, tight LSA's or with lifts above .550.
8 Custom Forged Rods for your Crazy Jay or Crazy Spartan Camshaft PLEASE CALL
16 Custom Forged Rods for your Spartan or Spartan Max Camshaft PLEASE CALL
16 Custom Forged Rods for your SRT MAX or larger camshaft PLEASE CALL

Camshaft/Cylinder Head Install Kit

 

These install kits may include gaskets, bolts, pushrods and valve springs as needed to install your camshaft and/or cylinder heads.

 

3.5L Camshaft/Cylinder Head Install Kit NO LONGER AVAILABLE
6.1 head gaskets PLEASE CALL
5.7L head gaskets PLEASE CALL
5.7 or 6.1 exhaust gaskets PLEASE CALL
Primary head bolts (qty 20) PLEASE CALL
Questions?  Call us today at (512) 964-7724
Copyright � 2008-2016 InertiaMotorsports.com. All Rights Reserved.