SKU: 81727451784

BluePrint Engines Chev LS 427 Pro Series EFI Base Dressed Engine 605hp # PSLS42730CTF

Sale price$12375.00 Regular price$13750.00
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 14 - Jul 19

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

BluePrint Engines Chev LS 427 Pro Series EFI Base Dressed Engine 605hp # PSLS42730CTFHorsepower & Torque: 605 Horsepower 565 FT. LBS. Torque Cylinder Heads: BluePrint Engines LS3 Aluminum Cylinder Heads Compression Ratio: 11: 1 Camshaft: Hydraulic Roller Cam . 624 Intake . 624 Exhaust Lift and 239 Intake 255 Exhaust Duration @ . 050 1140 LSA Three Bolt Cam Pistons: Forged Crankshaft: Steel Crank 4. 125" Stroke and 6. 125" Rods This engine Does NOT come with a Fuel Injection ECU and Wiring Harness. The LS compatible platform is the

Horsepower & Torque: 605 Horsepower / 565 FT. LBS. Torque

Cylinder Heads: BluePrint Engines LS3 Aluminum Cylinder Heads

Compression Ratio: 11:1

Camshaft: Hydraulic Roller Cam - .624 Intake / .624 Exhaust Lift and 239 Intake / 255 Exhaust Duration @ .050 - 1140 LSA - Three Bolt Cam

Pistons: Forged

Crankshaft: Steel Crank - 4.125" Stroke and 6.125" Rods

This engine Does NOT come with a Fuel Injection ECU and Wiring Harness.

The LS-compatible platform is the king of street machinesand this BluePrint Engines 427 C.I. Pro Series monster proves why. Unleash raw, LS-powered fury with a street-scorching 605 horsepower and 565 ft-lbs of torque. This base dressed beast packs a 11:1 compression ratio, BluePrint aluminum heads, a hydraulic roller cam, and hypereutectic pistons, and nodular iron crankshaft, all locked into a high-strength LSX-style cast iron block. With the drive-by-wire throttle pedal, sensors, and throttle body included, its ready to ripjust plug in, fire it up, and hang on.

Description:

  • Horsepower & Torque: 605 Horsepower / 565 ft. lbs. Torque
  • Compression Ratio: 11:1
  • BluePrint Engines LS3 Aluminum Heads
  • BluePrint Engines Hydraulic Roller Cam
  • BluePrint Engines Hypereutectic Pistons
  • BluePrint Engines Forged Crankshaft

Block:

  • BluePrint Engines High Strength Cast Iron (LSX Style) Block
  • Increased Deck Thickness and Strength Webbing
  • Utilizes OEM LS3 Front and Rear Covers
  • Improved Water Jacket Design
  • Extended Cylinder Skirt
  • 1-piece Rear Main Seal
  • Priority Main Oiling
  • 4.0685" Bore
  • 6-bolt Main

Rotating Assembly:

  • Forged Crankshaft
  • 4.125" Stroke
  • Forged 6.125" Connecting Rods
  • Forged Pistons
  • Internally Balanced Front and Rear

Cylinder Heads:

  • BluePrint Aluminum Cylinder Heads - PS8015
  • 69cc Chamber
  • 2.165" Intake / 1.590" Exhaust Valves
  • 259cc Intake / 102cc Exhaust Runners

Cam Specs:

  • Hydraulic Roller
  • .624 Intake / .624 Exhaust Lift
  • 239 Intake / 255 Exhaust Duration
  • @.050-114 Degree Lobe Separation

Also Includes:

  • This engine Does NOT come with a Fuel Injection ECU and Wiring Harness
  • LS Swap Oil Pan - Windage Tray - Pick Up Screen
  • BluePrint Engines Fuel Injectors and Rail
  • DBW Throttle Body - BPP12191019
  • Water Pump - BPPLS126WP
  • Throttle Pedal, and Sensors
  • GM Plastic Intake Manifold
  • Spark Plugs & Wires
  • Harmonic Balancer
  • Coil Packs

Notes:

  • Does NOT include any engine management/controller.
  • This engine requires a non-weighted flex plate/flywheel.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 81727451784

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.8 ★★★★★
Based on 1693 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
C
Verified Purchase
Curly
Whiting, US
★★★★★ 5
Game changer..get one!
My floors had varying levels of dirt (think heavy traffic area vs lighter traffic areas) and the detection system masterfully targeted areas until they were super clean. This is a good value, time saving and elevated my quality of life.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2026
M
Verified Purchase
MvP
Birmingham, US
★★★★★ 5
Works great, might have to use distilled water if you have hard water
So far it's great! It uses a LOT of water on the first clean (and maybe also because of using the 'Freo' ai mode) you can use tap water, but in areas with hard water, you might need to go through a lot of distilled water. I think on future cleaning jobs it's supposed to use less water though. And you can adjust the cleaning level to a lower setting so that it doesn't use as much. The app takes a little while to get used to, because there are many options and menus. But still very nice to have and use. The vacuum has a dust bin with a very basic filter (needs replaced every 30 days if used), but if you want more of 'Hepa' clean air, you would have to use another type of vacuum before mopping. It also doesn't get close to the edges of some areas for some reason, even thought it could fit. Still, for what it is, it's a great product that will cut down on a lot of mopping time.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 25, 2025
S
Verified Purchase
Stephanie
Massapequa, US
★★★★★ 5
Worth every penny. Highly recommend!
To say I love my Narwal robotic mop and vacuum is an understatement—total game changer. I can’t imagine going back to any other robotic vacuum. I have two dogs, including a Jack Russell who sheds like Pig-Pen from Peanuts—basically a walking cloud of hair—and this thing handles it effortlessly. The vacuum + mopping combo is amazing, and it’s so easy to use and maintain. It truly does all the dirty work for me. I did have a small hiccup about two months in, but Narwal support helped me reset it quickly and it’s been perfect ever since (I definitely panicked for a minute 😅). Worth every penny. Highly recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2026
R
Verified Purchase
RN
Dallas, US
★★★★★ 1
Unreliable. Doesn't work.
Has been every unreliable. Misses lots of spots with horrible mapping. Doesn't go some places for some reason. We moved the furniture, tried remapping but nothing works. Randomly goes in circles in the same spot at times. Updated firmware, spoke to support etc. When using vacuum and Mop option, it skips carpets and doesn't go back to do them afterwards. The whole programming is unreliable. Don't BUY. Can't return it past the warranty/return period.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2026
M
Verified Purchase
MeganRyb
Natrona Heights, US
★★★★★ 5
LOVE ❤️
I’ve only had this for a few days but I am in LOVE with it and maybe a little obsessed. Even my husband commented on how clean our floors were after the first use. The mapping feature works very well; better than my previous robo vac. I love that it takes the everyday maintenance out of the equation by cleaning/drying the mop heads itself. I wish the instruction manual had more info in it, as well as what some of the features on the app entail, but I’m sure google can provide that info. I’m very pleased with this product.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 3, 2025

recommand products