GM Retro LS3 Crate Motor & 4L70/80E Combo 430/425

ENGINES AND/OR TRANSMISSION MUST BE PROCESSED WITH CERTIFIED FUNDS (CHECK, WIRE TRANSFER, OR MONEY ORDER). MOST SETUPS ARE STOCKED & READY TO SHIP, CALL NOW.

Upgrade your vehicle with the GM Performance LS3 crate engine from Engine Atomy's Retro series. This powerhouse engine is designed to deliver top-notch performance and reliability for your automotive restoration project. With its high-quality construction and precision engineering, this LS3 engine is sure to provide the power and efficiency you need. Whether you're looking to enhance the performance of your classic car or modernize your vehicle, this crate engine is the perfect solution. Trust in GM Performance to deliver the ultimate driving experience. Order yours today and take your restoration project to the next level.

NOTE: Engine and transmission packages DO NOT come with the engine harness or computers. You will have to add them separately to your cart.

Harnesses: CLICK HERE

Controller kits: CLICK HERE

Engines:

430hp/425tq

495hp/473tq

525hp/486tq

Engines Include: 

Ignition Coils, coolant crossover, starter motor, oil filler neck, spark plugs & wires, 160 degree thermostat, flexplate. 

Engine Paint: 

Black (fully painted black)

Red (Red block, valve covers, with natural oil pan and heads)

Orange (Orange block, valve covers, with natural oil pan, and heads)

Intake manifold: (LS3 or Fabricated) will include LS3 42lb injectors, bosch LS3 MAP sensor, LS3 90mm throttle body. 

Serpentine front drive system: CVF Racing Billet serpentine kit (Lifetime warranty). Sanden A/C peanut compressor, 140 amp alternator (CS130), GM type II power steering pump w/ remote reservoir, LS style water pump, 8 rib belt. 

Transmissions: 

Stage 1 4L70E (15 pin) 500HP Rating

Stage 2 4L70E (15 pin) 650HP Rating

Stage 2 4L80E 650HP Rating