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Description
BluePrint Engines Chev LS 427 Pro Series EFI Dressed Engine 605hp # PSLS4273CTFGM LS Compatible 427 c. i. Pro Series Engine 605 Horsepower Base Dressed Holley Terminator X EFI System Overview: The Blueprint Engines 427cubic inch Pro Series crate engine is a dyno tested, turnkey powerplant that delivers 605 horsepower and 565 lb ft of torque, making it an ideal match for Holleys Terminator X Max 550 931 EFI system. This engine features a BluePrint Engines High Strength cast iron (LSX Style) block with reinforced internals, steel
GM LS Compatible 427 c.i. Pro Series Engine - 605 Horsepower - Base Dressed - Holley Terminator X EFI System
Overview:
The Blueprint Engines 427cubic inch Pro Series crate engine is a dyno-tested, turnkey powerplant that delivers 605 horsepower and 565 lb-ft of torque, making it an ideal match for Holleys Terminator X Max 550-931 EFI system. This engine features a BluePrint Engines High Strength cast iron (LSX Style) block with reinforced internals, steel crankshaft, forged rods, and forged pistons, all internally balanced for durability and long-term performance. Paired with LS3-style aluminum heads and a .624 Intake / .624 Exhaust Lift and 239 Intake / 255 Exhaust Duration @ .050 - 1140 LSA hydraulic roller cam, the 11:1 compression ratio offers strong street and strip capability. The Terminator X Max ECU included in the kit integrates seamlessly with this engines 58x crank and 4x cam sensor setup, providing plug-and-play functionality with drive-by-wire throttle, coil packs, and EV6-style fuel injectors already installed. The ECUs self-learning fuel map ensures easy startup and quick adaptation to the engines fueling needs without complex tuning, while also enabling expandability for nitrous, boost control, or electric fan integration via CAN or I/O modules like Holleys 554-165. With included accessories like a pre-installed intake manifold, injectors, throttle body, water pump, and an easy to mount DBW pedal, this engine is truly swap-ready. Whether for a restomod, pro-touring build, or a street performance application, the combination of a dyno-certified engine and the advanced control of the Terminator X Max offers unmatched reliability, tunability, and future upgrade potentialall backed by a 30-month/50,000-mile warranty.
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 Forged Crank
- BluePrint Engines Forged Pistons
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
Holley Terminator X Max Specific Features and Benefits:
- Real Time Fuel Map Learning Simplifies Tuning by Dynamically Adjusting the Base Fuel Rate
- On Board Bosch LSU 4.9 Wideband Control, Enabling Accurate AFR Readings and Closed Loop Tuning
- Eight High Impedance Injector Drivers, Ideal for Stock LS Injectors and Holley EFI Injectors
- Integrated 1-Bar MAP Sensor for Naturally Aspirated or Nitrous Setups, with Harness Support for External Higher Bar Sensors if needed
- 4 Configurable Inputs (12V, Ground, 5V, Frequency) and 2 Outputs (Ground, PWM) - Ideal for Electric Fans, Boost Control Solenoids, Nitrous Control and more
- Free PC Tuning Software via USB/CAN Interface for Full Laptop Control and Advance Setup
- Integrated 3.5" Touchscreen Handheld with Setup Wizard, Internal Data Logging, and Real Time Gauge Displays
- Terminator X Max ECU will Include a Base Timing Map Pre-Configured for this engine.
Also Includes:
- 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:
- This Holley EFI Equipped engine has a fully calibrated ECU by BluePrint Engines. Please DO NOT follow the Holley EFI manual for the calibration of the ECU.
- Holley terminator X MAX System supports transmission control, but requires additional Transmission harness such as BPP558405
- This engine requires a non-weighted flex plate/flywheel.
- Retro fit oil pan will fit most 1955-1995 GM front engine, RWD, V8 cars
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.2 ★★★★★
Based on 25 reviews
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Product Reviews
★★★★★ 1
Terrible, bizarre customer service. Don't bother with Tipre! Waste of money.
Size: 2 kg - Mini Size
Glad that some had 5-star experiences but that was DEFINITELY NOT my case. Shorty after the return window the tare become unstable in spite of a fully-charged battery. Tipre requested a video to prove my claims, then requested a SECOND VIDEO, and offered a replacement only if I were to PURCHASE A SECOND SCALE and they would reimburse me. DO I HAVE STUPID WRITTEN ON MY FOREHEAD???? I can throw this scale in the trash and be only $20 in the hole, why risk ANOTHER $20??? Lots of options on Amazon. BUY A DIFFERENT ONE!!
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Reviewed in the United States on April 28, 2026
★★★★★ 5
Great Scale for fine measurements, best I could hope for so give it a go!
I'm using this as an ordinary kitchen scale not as a pour over coffee scale with timer so my review will reflect my usage. I bought because it measures to 0.1grams which is 10 times finer resolution than most kitchen scales like my beloved OXO that died after many years. I don't usually need that fine a resolution but I do need to know to the exact gram so by seeing tenths of a gram I can see exactly how close I am to that 1 gram diference. For example less exact scales aren't sensitive to tiny changes in weight so if you make several tiny additions to get a scale to register 1 more gram it isn't sensitive enough to register those tiny change so to see if you finally added enough flour to get to say 30 grams. With ordinary scakes you have to remove the item from the scale & reweigh the whole thing because a lesser scale just doesn't register tiny incremental additions or subsubtractions. That makes this scale actually accurate to the tiny amounts you add or subtract to get an exact weight in whole grams so its ten times better in my book for less money than my previous scale. The display is very stable, meaning a weight doesn't jump up & down a few times before it settles on the true weight which is exactly how scales should work and its fast. I think the trade off for this increased accuracy is that its upper weight limit is less than the OXO & others but when making 1, 2, or 3 cakes or loaves you need to weigh small addition like salt and spices. If you need to weigh big slabs of meat this scales doesn't weigh heavy enough for that so compare how you will use the scale to it's listed specs when choosing. So far its been very consistent, stable & fast. Also the tare waorks well & quickly plus the auto shut off feature gives you enough time to handle distractions like checking the recipe or openibg a new bag of flour so that function also balances need with the econy of saving batteries. Others have shut off too soon making me totally nuts so keep this little feature in mind.The only minor quibble I have is that it has an orange display which is my least favorite color but its bright & clear to read so no real argument from me & if it holds up over time I will be a very happy woman, but so far so good! I have used it multiple times daily for a couple months now to maintain my Sourdough starter & make bread and it's perfect for that and it has gotten a workout before I wrote this review. I hope it helps you chose as there are so many scales to choose from its difficult to hit all the right buttons but this scale has done that nicely! Happy baking!
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Reviewed in the United States on October 11, 2020
★★★★★ 5
Reliable Coffee Scale with Timer
I’ve been using this coffee scale with timer for a while now, and I’m very happy with it. It does exactly what the description says and has been working perfectly over time.
✅ Accurate measurements – Great for brewing coffee or weighing ingredients.
✅ Built-in timer – Super useful for pour-over coffee and consistency.
✅ Durable – I’ve had it for months and it still works flawlessly.
If you’re looking for a reliable digital coffee scale that’s easy to use and long-lasting, this one is an excellent choice. Definitely worth 5 stars! ⭐⭐⭐⭐⭐
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Reviewed in the United States on September 28, 2025
★★★★★ 5
Great Beginner Coffee Scale
I have owned this scale for several months now and have had no complains. It is quick to read when adding beans. I have really enjoyed having the built in stopwatch. Some reviews say they would rather have a timer, but I really haven't felt the need for one. I have found that it is accurate with .3-.5 grams which is entirely reasonable for the price and for my use, pour over. In case it wasn't obvious, I would not recommend this for pulling shots of espresso as it is rather large and less accurate than you would want. I find it funny when people think they are going to get an ultra accurate, precise scale at this price point. If you want something accurate, you will have to pay more for it, but for the person who wants to step up their coffee game from using volumetric measurements, this is a great deal.
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Reviewed in the United States on February 2, 2021
★★★★★ 4
Reliable Coffee Scale for Daily Use
I've been using the ERAVSOW Coffee Scale for four years now, and it has been an essential tool in my daily coffee brewing routine. Here's what I love about it:
Accurate Measurements: The precision sensors ensure accurate measurements every time, which is crucial for brewing the perfect cup of coffee. Whether I'm measuring beans or water, I can always rely on this scale to give me precise results.
Convenient Timer: The built-in timer is a fantastic feature for timing my pour-over brews. It helps me achieve consistency in my brewing process and ensures that I extract the flavors just right.
Sturdy Construction: The stainless steel construction feels durable and high-quality. It has held up well over the years, despite regular use in my kitchen.
LCD Display: The LCD display is clear and somewhat easy to read, not as much in low light conditions. It provides all the necessary information at a glance, including weight and timer readings.
Batteries Included: I appreciate that the scale comes with batteries included, so I could start using it right out of the box without any additional purchases.
However, there is one minor issue that I've encountered over time—the rubber feet have started to come off. While this hasn't affected the functionality of the scale, it's worth mentioning as it could potentially affect its stability on certain surfaces.
Overall, the ERAVSOW Coffee Scale has been a reliable companion in my coffee brewing journey. Despite the minor issue with the rubber feet, I highly recommend it to any coffee enthusiast looking for a dependable scale for their daily brewing needs.
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Reviewed in the United States on May 31, 2024