CNC Competition 6.1L Hemi Short Block Compstar Crank Autotec 8.8:1 Pistons

CNC-Motorsports Chrysler 5.7L Gen 3 Hemi short blocks have quickly raised the bar to a new level in offering high quality short blocks at an affordable price. Our short blocks have become a huge hit among racers and performance enthusiast all over the world. We have the ability to custom build you just about any combination the way you want it. All our short blocks are 100% machined, CNC Machined and blue-printed to our race wining specs. We "Never" cut corners to lessen the price.


Mopar Performance 6.1L Aluminum Block
New Compstar 4340 forged steel crankshaft (4.080 Stroke)
New Compstar H-Beam connecting rods bushed fit pins, ARP 2000 bolts (6.125 Length)
Autotec forged pistons, .150 wall wrist pins
Steel Piston ring set, 1.2 Steel top ring, 1.2 Napier second ring, with 3.0mm oil rings for power adders
ACL / Clevite H series race rod and main Bearings
Performance cam bearings
freeze plug kit

Compression Ratio with 73cc head 8.8:1 
Rated to support 1200 plus Horsepower

*Professionally Machined, Balanced, Assembled and blue printed in house by CNC-Motorsports. Balance card and blue print sheet will be provided to the customer. All short blocks are standard bore unless otherwise noted. We can custom build any short block assembly to meet your needs.