CNC Competition BB Chevy 632 Dart Short Block, Manley Crank, JE 14.0:1 Nitrous 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.

BB Chevy 632 Short Block Assembly
New Manley 4340 forged steel crankshaft (4.750 Stroke) **Internal Balance**
New Manley H-Beam connecting rods bushed fit pins with 7/16 ARP 8740 bolts (6.700 Length)
New JE forged 40cc Nitrous dome pistons (4.600)
Total Seal AP Steel Ring Set
ACL/Clevite 77 Rod and Main Bearings
Dura bond cam bearings
Brass freeze plug kit
Dura bond finishing kit
New Dart Big M sportsman block, short deck
Compression Ratio with 110cc Heads: 16.8:1
Compression Ratio with 118cc Heads: 15.4:1
Compression Ratio with 124cc Heads: 14.4:1

*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. *Ships Truck Freight*