427 Sleeved Aluminum LS Short Block - Street/Strip Series

Our Street-Strip Series 427 short block has all the ingredients to pack the punch you're after.  The aluminum block 427 Darton Sleeved LS combo is a proven performer and is quickly becoming our most popular short block combination.  The 427 is a big bore (4.125") with a stroker crank (4.000") making it a torquey beast. The large bore size allows you to use higher flowing cylinder heads, like the LS7 Style cylinder heads.  This combo has become the go to for power adder guys, no matter if it's boost or nitrous!

Build Specs:

• Seasoned GM Aluminum 5.3L Gen 4 Block with Darton Sleeves
• Blocks are CNC Decked, CNC Bored and CNC Torque Plate Honed
• Callies Compstar CCW Crankshaft with welded reluctor wheel
• Callies Compstar XD Connecting Rods
• Mahle Forged 2618 Pistons and Ring Set with heavy wall wrist pins (Flat top unless otherwise requested)
• ARP Main Studs
• ACL Main & Rod Bearings
• Durabond Cam Bearings
• New block plug kit and barbell