*Shown With Optional Upgrades

LS3 575HP Long Block

Our complete LS3 374CI 575HP long block engine package. This build features the Aluminum LS3 Series 6 bolt block. Comes ready to install with the Muscle Car oil pan. This engine package is ideal for the customer looking for extremely reliable with add power and torque. If you are in need of a serpentine pulley kit complete with components or a transmission we can assist you with that as well.

$9,399.00

Pay a 50% deposit per item

WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov

Chevy LS3 376CI 575HP Long Block Engine Specifications: 

  • Fully Machined LS3 aluminum Block
  • Eagle 4140 Forged Steel 3.622 Stroke Crank Shaft
  • Eagle FSI I-Beam Rods With 7/16 ARP 8740 Bolts
  • Performance Forged Pistons
  • Complete Assembly Internally Balanced
  • Comp Cams Custom Ground Hydraulic Roller Camshaft
  • Hydraulic Roller lifters
  • True Roller Timing chain set
  • Melling Oil pump
  • LS3/L92 Performance Rectangle port Aluminum Cylinder Heads
  • GM Performance Performance Springs
  • GM Rocker arms
  • Manley Chrome Moly Pushrods
  • Main bolts
  • ARP Head bolts
  • Aluminum Timing And Rear Cover
  • Aluminum Valley Tray
  • 5 Quart Muscle Car Oil Pan

Introducing Proformance Unlimited’s line of LS based hot rod engines. Where new school performance meets old school looks. We have developed a complete line of fuel injected and carbureted LS based power plants to fit almost everyone’s needs. If you don’t see something you want give us a call and we will design it for you. Our vision on these engines is to bring back the really cool looks from yesteryears engines with today’s reliability. Whether it’s a classic carbureted engine or a wild fuel injected side draft look your after you’ve found the right builder. Take your time checking out our youtube videos and engine package designs. We are well known for our high quality, reliable, show car quality engine builds.

Contact:

733 North Drive #B Melbourne, FL 32934

PH: 800-267-3940

Shop Hours:

Monday – Thursday 8:00am – 5:00pm EST

Friday 8:00am – 4:00pm EST

PROFORMANCE UNLIMITED INC. RESERVES THE RIGHT TO MAKE CHANGES IN DESIGN OR TO MAKE ADDITIONS TO OR IMPROVEMENTS UPON ANY OF ITS PRODUCTS AT ANY TIME WITHOUT INCURRING ANY OBLIGATION WHATSOEVER TO INSTALL THE SAME OR IMPROVEMENT UPON PRODUCTS PREVIOUSLY MANUFACTURED. OCCASIONALLY DEPENDING ON AVAILABILITY, PARTS MAY BE SUBSTITUTED THAT WILL NOT EFFECT PRICE, PERFORMANCE, APPEARANCE OR QUALITY OF THE PRODUCT.
*Engine shown with optional upgrades