CNC Competition SB Chevy 377 Dart Short Block, Eagle Crank, Icon 9.8:1 Pistons

CNC-Motorsports, has 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 like others just to lessen the price.

SB Chevy 377 Short Block Assemble
New Eagle 4340 forged steel crankshaft (3.480 Stroke) **Internal Balance**
New Eagle H-Beam connecting rods bushed fit pins, ARP 8740 bolts (6.000 Length)
New Icon forged -15.2cc dish pistons, 2618 forged
High performance plasma moly piston ring set 1/16 1/16 3/16
ACL/Clevite 77 Rod and Main Bearings
Dura bond cam bearings
Brass freeze plug kit
Dura bond finishing kit
New Dart SHP block
Compression Ratio with 58cc Heads: 10.4:1
Compression Ratio with 64cc Heads: 9.8:1
Compression Ratio with 76cc Heads: 8.7:1

*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.