Skip to main content
my account
site map
email usour facebook page
Thitek (add $3400)
6.4L Heads (add $2500)
Core Charge
Customer Providing Cores
Core Purchase (add $3200)
add to cart buy now
6.4L - 420 HEMI Long Block




Getting your Scat Pack to the front of the Pack is what this HEMI Long Block is all about. This long block was built for boost and is set up for 1200+HP out of the box. With all of the options included from our HEMI short blocks we added the top end to make the most out of your build. Including a Custom Grind Camshaft, ARP Hardware, Cometic MLX High Boost Head Gaskets, and many other options you only get when you want to be Better Built.  


Block Prep: 
Casting inspection
Sonic Check cylinder walls
Deburr interior surfaces
Chamfer and Radius edges
Deck Head Surface
Cylinder Bore and Hone with Plates
Line Bore and Hone with Plates
Total Block Cleansing

Short Block Assembly:  
Mopar Block 
4340 Forged Crankshaft keyed for Damper
4340 Billet I-Beam Rods w/ L19 Rod Bolts
Diamond Racing 2618 Pistons w/ Steel Rings 
ARP Main Studs 
ARP L19 Head Studs
H-Series Bearings

Head Assembly:
Stainless Steel Intake and Inconel Exhaust
Conical Beehive Valve Spring .650" lift
Hardened Locators and Retainers w/ Shims
Viton Valve Seals


Camshaft Kit and Timing:
Comp Custom Grind VVT Camshaft
Comp Phase Limiter
Chromoly Pushrods
Non_MDS HD Lifter Set
Mopar Rockers
Mopar Timing Set
HD Oil Pump

Cubic Inches: 420
Liters: 6.9
Bore Size: 4.095"
Rod Length: 6.125"
Stroke: 4.00"

Share This Page
Add to favorites
Customer Reviews
There are no reviews yet. create your own review