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engine mobile Engine Pistons performance XP1
Series
Completely remanufactured OEM replacement engine with upgrades for longevity and reliability Engine Pistons XP1
Engine Pistons performance XP1
Series
Completely remanufactured OEM replacement engine with upgrades for longevity and reliability Engine Pistons XP1
Rapid
Rapid

LM7 5.3 Vortec Long Block Crate Engine

Original price was: $3,495.00.Current price is: $2,595.00.

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

Due to the high demand for this part, we require customers to call before ordering. This will ensure availability for your vehicle, calculate shipping, confirm core details, and secure your order.

CALL TO ORDER
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

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

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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