6.2L LS3 Street-Strip Short Block



The LS3 6.2L short block uses a new GM LS3 block with 4.065″ bore to produce the 376CI.

Product total
Options total
Grand total


  • New GM LS3 Aluminum Block Honed with Torque Plates
  • Bore Size 4.070
  • Line Honed with GM Main Bolts
  • Blueprinted Oil Clearances


  • Mahle Motorsports forged pistons with coated skirts


  • Clevite Main and Rod Bearings


  • New GM Factory Crankshaft
  • Stroke 3.622”
  • Your Choice of 24x or 58x Reluctor Wheel (Billet 24X Reluctor Wheel is an Extra $150)
  • Internally Balanced Front and Rear


  • Scat 4340 Forged Steel I-Beam
  • 6.100” Length
  • ARP Rod Bolts


Technical Links: (Coming Soon)


  • Installing Windage Tray, Oil Pump Pick Up and Covers
  • Installing LS Harmonic Balancer
  • Torque Specs for Entire Engine
  • How to Set Pushrod Preload on LS Engine
  • How to Properly Prime the LS Oil Pump
  • Recommendations; Oil, filter, spark plugs


The Golen Engine 6.2 LS3 Street/Strip Short Block, a real powerhouse for those who live and breathe performance. This monster’s heart is a brand spanking new GM LS3 aluminum block, tough as nails and ready for action. We’ve matched it with a new GM crankshaft, because we know you need reliability and strength. But that’s not all – we’ve beefed it up with Scat forged steel I-beam rods, making this engine durable enough to take on anything.

Now, let’s talk precision. Every one of these engines is balanced and blueprinted to perfection. You’re getting an engine that’s fine-tuned and ready to deliver peak performance. And if you’re thinking about assembly, don’t sweat it. We’ve got full tech support to walk you through the rest of the build, step by step. No question’s too big or small – we’re here to help.

But wait, there’s more. Need parts to finish off your build? We’ve got you covered with just about anything you might need. Check out our Golen Engine CNC ported LS3 heads – these are the real deal, designed to maximize airflow and boost your engine’s power. With these heads, you’re not just building an engine; you’re crafting a masterpiece of performance and power.

So, for those of you looking for an engine that’s built tough and backed up with all the support and parts you need, the Golen Engine 6.2 LS3 Street/Strip Short Block is your ticket to a ride that’s nothing short of extraordinary.”

Additional information

Weight 350 lbs
Dimensions 38 × 26 × 27 in