LS3 6.2L 416 Short Block Compstar Crank 10.6:1 Wiseco Pistons

CNC-Motorsports LS3 6.2L 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.


New GM LS3 Aluminum Block
New Callies Compstar 4340 forged steel crankshaft (4.000 Stroke) 8 counterweight **Internal Balance**
New Callies Compstar H-Beam connecting rods bushed fit pins, ARP 2000 bolts (6.125 Length)
Wiseco forged pistons, .150 wall wrist pins (*Fits all 15 degree LS Heads L92*)
Steel Piston ring set, Steel top ring, Napier second ring, with 3.0mm oil rings for power adders
H series race rod and main Bearings
Performance cam bearings
Comp Cams freeze plug kit
Compression Ratio with 66cc heads 10.7:1
Compression Ratio with 68cc heads 10.6:1
Compression Ratio with 70cc heads 10.4:1
Rated to support 1250 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.