xtreme performance logo
0%

LM7 5.3 Vortec Long Block Crate Engine

Original price was: $3,295.00.Current price is: $2,395.00.

Our LM7 5.3-liter Vortec Long Block Crate Engine is on sale. This 3rd generation Vortec was introduced to the market in 1999. It can be found in trucks and SUVs like the Cadillac Escalade, Chevrolet Avalanche, Express, Silverado, Suburban, Tahoe, GMC Savana, Sierra, Yukon, and Yukon XL. The LM7 is distinguishable from the other 5.3-liter Vortec engines by its cast iron block and aluminum heads; it also has an eighth-digit VIN code of “T.” Our XP1 series is far from a rebuilt LM7 long block; every motor has been completely remanufactured with upgraded parts designed to increase longevity.

VIN Compatibility 8th digit: T

Core Deposit: $475.00

Note: Please CALL before completing your order to receive a shipping quote, verify vehicle information, and confirm a core deposit and details. 1-888-995-7278.

Quick Info SKU: 53L-LM7-LB-MSE Categories: Tag:

Description

OEM REPLACEMENT

Our precision remanufactured LM7 block

Every LM7 Vortec block must pass our magnaflux inspection designed to detect any microscopic flaws or cracking. Blocks are then thermally cleaned, followed by steel microblasting until they achieve a brilliant appearance. Once a block is fully cleaned, we begin our precision boring and honing process. Using a carbon two-stage power hone, we can maximize the sealed area and ensure to precisely meet the recommended RMA readings. Computerized micrometers are used to resize rods in strict accordance with factory recommendations. Crankshafts are precision cut and micro-polished to achieve a 12 RMA reading or better.

Custom LM7 long block assembly

We meticulously mill each cylinder head until perfect alignment and sealing of the head gasket is achieved. Our cylinder heads are assembled using a new valve stem and seals that feature the latest in high-temperature technologies, increasing heat resistance and longevity. These polished cylinder heads are pressure tested using magnetic detection to eliminate the chance of cracks or flaws unseen by the human eye. Before each head is mated to their block using the correct torque valve, we vacuum test all seals for proper seating. Triple-angled cutters are used to machine the valve seats, ensuring proper pressure and flow. All valves, valve springs, and valve guides must pass our stringent process of meeting and exceeding OEM specifications. O.H.C. heads are aligned for proper bore consistency. Every remanufactured long block has been specifically engineered to help improve the inherent flaws and failure points that can be found in many of today's engines.

rebuilt engine

Additional information

Condition

Core Deposit

Vehicle Year

, , , , , , ,

8th Digit of VIN

Included With Long Block Engine

What Is XP1

Far from just being rebuilt, the Xtreme Performance series 1 is an OEM replacement that has been fully remanufactured with upgraded parts that have been designed to increase performance, reliability and longevity.

Compatible Models

Cadillac Escalade, Chevrolet Avalanche, Express, Silverado, Suburban, Tahoe, GMC Savana, Sierra, Yukon, Yukon XL

Note

Testing

Build Type

Make Manufacturer

, ,

Cubic Inches

Liters

Warranty2

Platinum 1 year, unlimited mileage, and nationwide warranty
Coverage details:
  • We cover you against any manufactured defects on this part.
  • This is a nation wide warranty that extends throughout the continental united states.
  • We do not charge restocking or shipping fees when a transmission qualifies for a warranty. Restocking and shipping fees are only applied if a customer wants to return a non defective transmission or is outside the continental United States.
  • There are no milage restrictions to your coverage.
  • Buyers warranty begins at original date of purchase and expires 1 year thereafter
This warranty does not cover any of the following:
  • Use of engine, clutches, transfer case, drive line, and/or differential for purposes for which it was not originally designed (such as off-road, race car, etc).
  • Abuse, neglect, accident, or improper towing.
  • Improper installation and maintenance, INCLUDING FAILURE TO FILL THE UNIT WITH PROPER FLUID AND MAINTAIN ADEQUATE LEVELS.
  • Charges that may have incurred from towing or vehicle rental.
  • Loss of time, inconvenience, vehicle usage loss, commercial loss or consequential damages.
  • Failure because of defects or inefficiencies or parts or assemblies not furnished with the transmission (flywheel, clutch, drive shaft, etc).
  • Broken Gears or Shafts.
  • Cracked or broken cases.
  • No claims for labor or consequential damages will be accepted.
  • We are not liable for misuse or negligence causing damage, defect, injury, or loss.
  • Unit must be returned for our inspection to determine fault.
Warranty Process:

In the rare case of a part failure please call our warranty department where a representative will assist you in the warranty process. Call Monday-Friday 9-4:30 CST 1-888-995-7278

core

corezzzz

Demo 5

Demo 5

Description

OEM REPLACEMENT

Our precision remanufactured LM7 block

Every LM7 Vortec block must pass our magnaflux inspection designed to detect any microscopic flaws or cracking. Blocks are then thermally cleaned, followed by steel microblasting until they achieve a brilliant appearance. Once a block is fully cleaned, we begin our precision boring and honing process. Using a carbon two-stage power hone, we can maximize the sealed area and ensure to precisely meet the recommended RMA readings. Computerized micrometers are used to resize rods in strict accordance with factory recommendations. Crankshafts are precision cut and micro-polished to achieve a 12 RMA reading or better.

Custom LM7 long block assembly

We meticulously mill each cylinder head until perfect alignment and sealing of the head gasket is achieved. Our cylinder heads are assembled using a new valve stem and seals that feature the latest in high-temperature technologies, increasing heat resistance and longevity. These polished cylinder heads are pressure tested using magnetic detection to eliminate the chance of cracks or flaws unseen by the human eye. Before each head is mated to their block using the correct torque valve, we vacuum test all seals for proper seating. Triple-angled cutters are used to machine the valve seats, ensuring proper pressure and flow. All valves, valve springs, and valve guides must pass our stringent process of meeting and exceeding OEM specifications. O.H.C. heads are aligned for proper bore consistency. Every remanufactured long block has been specifically engineered to help improve the inherent flaws and failure points that can be found in many of today's engines.

rebuilt engine

Additional information

Condition

Core Deposit

Vehicle Year

, , , , , , ,

8th Digit of VIN

Included With Long Block Engine

What Is XP1

Far from just being rebuilt, the Xtreme Performance series 1 is an OEM replacement that has been fully remanufactured with upgraded parts that have been designed to increase performance, reliability and longevity.

Compatible Models

Cadillac Escalade, Chevrolet Avalanche, Express, Silverado, Suburban, Tahoe, GMC Savana, Sierra, Yukon, Yukon XL

Note

Testing

Build Type

Make Manufacturer

, ,

Cubic Inches

Liters

Warranty2

Platinum 1 year, unlimited mileage, and nationwide warranty
Coverage details:
  • We cover you against any manufactured defects on this part.
  • This is a nation wide warranty that extends throughout the continental united states.
  • We do not charge restocking or shipping fees when a transmission qualifies for a warranty. Restocking and shipping fees are only applied if a customer wants to return a non defective transmission or is outside the continental United States.
  • There are no milage restrictions to your coverage.
  • Buyers warranty begins at original date of purchase and expires 1 year thereafter
This warranty does not cover any of the following:
  • Use of engine, clutches, transfer case, drive line, and/or differential for purposes for which it was not originally designed (such as off-road, race car, etc).
  • Abuse, neglect, accident, or improper towing.
  • Improper installation and maintenance, INCLUDING FAILURE TO FILL THE UNIT WITH PROPER FLUID AND MAINTAIN ADEQUATE LEVELS.
  • Charges that may have incurred from towing or vehicle rental.
  • Loss of time, inconvenience, vehicle usage loss, commercial loss or consequential damages.
  • Failure because of defects or inefficiencies or parts or assemblies not furnished with the transmission (flywheel, clutch, drive shaft, etc).
  • Broken Gears or Shafts.
  • Cracked or broken cases.
  • No claims for labor or consequential damages will be accepted.
  • We are not liable for misuse or negligence causing damage, defect, injury, or loss.
  • Unit must be returned for our inspection to determine fault.
Warranty Process:

In the rare case of a part failure please call our warranty department where a representative will assist you in the warranty process. Call Monday-Friday 9-4:30 CST 1-888-995-7278

core

corezzzz

Demo 5

Demo 5

You may also like…

XTREME PERFORMANCE

Socal

QUICK INFO

Monday-Friday: 8am to 5pm CST
Xtreme Performance PO Box 313 Farmington MN, 55024 United States
+ 1(888) 995-7278 + 1(888) 995-PART
info@xtremepart.com