CNC Competition 427/434 Dart Short Block, Callies 4.000 Crankshaft, Callies Ultra H Beam Rods, Dart SHP Block, JE 15.0:1 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.

Small Block Chevy Short Block Assemble
New Callies Magnum 4340 forged steel crankshaft (4.000 Stroke)
New Callies Ultra H-Beam stroker connecting rods bushed fit pins, ARP 2000 bolts (6.000 Length)
New JE forged 10.8cc hollow dome pistons, gas ported
Total Seal AP steel performance ring set, .043 .043 3.0mm
ACL/Clevite 77 Rod and Main Bearings
Dura Bond cam bearings
Dura Bond finishing kit
Brass freeze plugs
Fel-Pro rear main seal
New Dart SHP block
Compression Ratio with 64cc Heads: 15.0:1

*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.