ATK Chevy LS3 415 Short Block 58 Tooth -29cc Dished SP74 Engine

Item #22724

ATK Chevy LS3 415 Short Block 58 Tooth -29cc Dished SP74 Engine
ATK SP74 Chevy LS3 415 Short Block -29cc
*
$5,376.25
- +
Quantity:
Quantity: close

In stock

payment-icons
OR
< Back

Details

Build a powerful engine for your muscle car with the ATK Chevy LS3 415 Short Block. With lower compression ratio, this short block is ideal for turbocharged and supercharged applications. Made from GS aluminum blocks, this unit is fitted with forged crankshaft, forged pistons and forged connecting rods for tough construction.

Engine Specifications:

  • Block: New GM L92/LS3 Aluminum
  • Bore/Stroke: 4.065 x 4.000
  • Displacement: 415 C.I.D.
  • Crankshaft: Manley 4340 Forged 4.000" Stroke Internally Balanced
  • Connecting Rods: Manley 4340 Forged H Beam 6.125 ARP 8740 Bolts
  • Pistons: Forged +29cc Flat Dished
  • Piston Rings: Moly Rings
  • Compression Ratio: 64cc=9.3:1/66cc=9.1:1/70cc=8.8:1
  • Camshaft Bearings: Installed & Clocked to OEM Position
  • Freeze Plugs: Brass Installed & Sealed
  • Oil Galley Plugs: Installed & Sealed

Every great build needs a solid foundation! For that reason, we take the hard work out of the picture by selling short blocks that are ready for you to complete yourself. Our GM Short Blocks are most commonly packaged as the engine block assembled with Pistons, Piston Rings and Crankshaft installed.

ATK specializes in muscle. With the highest quality internal parts and Dyno Proven combinations of every engine built, ATK is able to add the most bang for your buck and back it up with an industry leading warranty.



Don't forget the engine paint!
Engine Paint


More info...

Contents

ATK High Performance Chevy LS3 415 Short Blocks


Specifications

Engine Information:

• Oil: 5W30
• Harmonic Balancer/Damper: Internally Balanced
• Flex Plate / Flywheel: Internally Balanced


Accessories

Recommended Components:

• Balancer: Internal balance
• Flexplate/Flywheel: Internal balance
• Head Gasket: .051" thickness or per application
• Oil: 10W40 Non synthetic for first 3000 miles
• Oil Filter: Wix or K&N per application
• Oil Pump: Melling #689-10296 with high pressure spring

Disclaimer: The parts listed are ATK’s recommendations of parts to be used to obtain our power figures listed. Power figures can vary based on parts used by the end user. It is the customer’s responsibility to verify components will work for their application. Some modifications to the vehicle may be required using these and or other aftermarket parts.


Shipping Instructions

Shipping is free and lift gate will be provided.


Eastwood Offers Free Lifetime Technical Support


Click here for product SDS information


Attention California Residents - Proposition 65


Proposition 65 Warning WARNING - Cancer and Reproductive Harm - www.P65Warnings.ca.gov






Customer Reviews

Questions & Answers