Additional Images

CPSLS3765254L70E-MC - Swap Ready LS3 525HP Engine w/4L70E Trans "$500.00 REBATE"

This product may require vehicle validation(s) for proper fitment. Please contact us to confirm correct vehicle fitment and usage.

Availability: Replaced by CPSLS3765254L70E-MCX
Shipping: FREE 48 State Shipping


Pace Exclusive LS Muscle Car Series LS3 525HP Connect and Cruise Package

As delivered, the Pace LS376/525 Muscle Car Engine is configured with popular upgrades and deletions (listed below) that customers have previously requested.

Engine and Transmission Package Includes:
• GMP-19301360-MC LS3 Muscle Car 525HP Engine
• 19259261 Engine Controller
• 4L70E Transmission with Torque Converter
• Transmission Controller
• 4L70E Install Kit

Derived from customer request Pace Performance delivers the popular LS3 in a new muscle car “swap ready” crate engine. Pace removes the current Chevy production oil pan and installs a low profile LS swap oil pan. Most aftermarket serpentine accessory drive systems include a water pump and balancer so these are also removed. Since the ATI balancers are used in most serp. drive kits Pace indexes and drills the crankshaft for pin/keyway needed for the ATI balancer. Pace then installs the HeatShield Products I-M Shield™ intake manifold heat barrier for consistent intake air temps and the rocker arms get beefed up with HD roller trunions. Also included is HP Tuner’s 6110 code scanner/reader which can be upgraded for custom tuning with purchase of additional software. Also available in 430HP & 480HP versions and the Connect & Cruise powertrain packages.

Engine Specifications:
Power: 525 HP @ 6300 RPM, 489 ft. lbs. of torque @ 4400 RPM
Displacement: 376 CID, 6.2L
Bore x Stroke: 4.060” x 3.620”
Compression Ratio: 10.7:1
Recommended Fuel: 92 Octane
Block: Cast Aluminum with 6 bolt cross bolted main caps
Crankshaft: Nodular Iron
Connecting Rods: Powdered Metal Steel
Pistons: Hypereutectic Aluminum
Camshaft: Steel Hydraulic Roller Tappet
Cam Lift: .525” Intake / .525” exhaust
Cam Duration @ .050”: 226 deg. Intake / 236 deg. Exhaust
Lobe Separation: 110 Degree
Cylinder Heads: Aluminum L92 style ports
Combustion Chamber: 68cc
Valves: 2.165” Intake/ 1.590” Exhaust
Rocker Arms: 1.7:1 Ratio
Balance: Internal
Reluctor: 58X
Maximum GM Recommended RPM: 6600

Engine Includes:
• Fully GM assembled long block
• Ignition Coils, Plug Wires and Spark Plugs
• Exhaust Manifolds
• EFI Intake with fuel rails, injectors and throttle body
• 14” Auto Trans Flexplate
• Front timing cover
• Oil Filter
• Passenger Side RH Oil Dipstick and Tube

Pace Muscle Car Upgrades:

Also included is HP Tuner's HPT-6110 code scanner/reader

Installed Holley Muscle Car Swap Oil Pan (see additional images for dimensions image)

Heatshield Products Intake Manifold heat shield installed

• Crank indexed & drilled for ATI balancer pin (pin included but not installed)

• Comp Cams rocker arm roller trunions installed

General Motors limited 2 year / 50,000 mile parts & labor warranty. Click on Document tab above for full details.

Related Engines and Components:
GM LSA Connect & Cruise Package
GM LS Engine Serpentine Drive Packages
LS Engine Swap Mounts and Conversion Kits
GM LS Engine Swap Headers

Application List



  • CPSLS3765254L70E-MC
  • CPSLS3765254L70E-MC
  • PACE Performance
  • Replaced by CPSLS3765254L70E-MCX
  • New

Shipping Information

  • Item Requires Shipping
  • 200.0 lbs.
  • FREE 48 State Shipping

Customer Reviews

Comment Total Reviews (0)

Write the First Review!

You must login to post a review.

Trusted Specialists GM engine & parts specialists
Located in the USA Owned, operated, & employed
Need Assistance? Call us at 888-748-4655
Mon-Thu 8am-6pm EST
Fri 8am-5:30pm EST
Have a Question Email us and we'll get back to you within 24 hours
Pace B2B