Remanufactured GM 5.3L Vortec V8 (LM7 or L59 flex fuel) for 1999-2002 Chevrolet, GMC and Cadillac trucks and SUVs. Zero miles, built to order, free shipping, no core charge.

Build time: usually 5-7 days, plus shipping (varies by engine; contact us for current availability).

Fitment

Confirm your engine

• VIN 8th digit: T = LM7, Z = L59.
• RPO code: LM7 or L59 on the glove-box sticker. Choose your engine code from the dropdown.

Casting numbers

• Block (LM7 and L59, cast iron): 12551358, 12567392 or 12567393
• Cylinder heads (LM7, L59): 862 or 706 (cathedral port; last three digits of the casting number)

Where to find casting numbers: the block casting number is on the driver side rear of the block, just above the bellhousing flange and below the driver-side cylinder head (hard to read in the vehicle; a mirror and flashlight help). On the cylinder heads, the last three digits of the casting number are cast into the head near the corner/end, just below the valve cover.

Send us your VIN with your order to confirm fitment.

Notes

• The valley plate (lifter valley cover) is not included; reuse yours from your current engine.

Other 5.3L versions

Not a 1999-2002 engine? Check the 8th digit of your VIN and see:

• 2003-2009 without AFM or VVT (LM7 / L59 / L33 / LM4 / LMF / LH8): see our GM 5.3L non-AFM, non-VVT (2003-2009) listing
• 2007-2009 with AFM, no VVT (LY5 / LMG / LH6 / LC9): see our GM 5.3L AFM, non-VVT (2007-2009) listing
• 2010-2014 with VVT, no AFM (LMF / LH9: Express / Savana, Colorado / Canyon): see our GM 5.3L VVT, non-AFM (2010-2014) listing
• 2010-2014 with VVT and AFM (LMG / LC9), including the 2014 Tahoe / Yukon / Suburban / Yukon XL: see our GM 5.3L VVT + AFM (2010-2014) listing
• 2014 and newer direct injection (L83 / L82 / L84): see our GM 5.3L EcoTec3 direct-injection listing
• Want more power? Cammed 1999-2014 5.3L with a Stage 1-3 cam, built non-AFM: see our Cammed GM 5.3L Vortec Non-AFM (1999-2014, Stage 1-3) listing

What's included

Built in our full-service in-house machine shop. Reused and remachined: connecting rods, crankshaft and cylinder heads. New OEM or aftermarket parts: bearings, rings, pistons, lifters, valves, timing components, camshafts, rockers and more.

• Machined, milled and polished internals (crankshaft, block, cylinder bores)
• All new bearings and parts: main and rod bearings, pistons, piston rings, head gaskets, timing set and guides
• Cylinder heads fully machined: 3-angle performance valve job including seats, diamond mill finish, new valve seals

Recommended add-ons

• GM 5.3L Vortec Engine Gasket Kit - $200

Delivery type

• Business with dock/forklift or terminal pickup: free
• Business without dock (lift gate): +$100
• Residential (includes lift gate): +$300

Shipping is free within the Continental United States to commercial addresses with a forklift/dock or terminal pickup. If the delivery address doesn't match the delivery type selected, the difference will be charged before shipping. Alaska & Hawaii: online checkout isn't available for engines shipping to AK or HI. Call 623-204-6365 for a freight quote before ordering. Crate size: 40" x 40" x 30"; approx. weight 550 lbs.

Break-in

The first 1,000 miles are the break-in period. Use conventional oil only, change the oil and filter at 500 miles, vary your RPM, and avoid towing, heavy loads and long idling. Check your oil level regularly, since some oil burn-off is normal until the rings seat. Following the break-in procedure is required to keep your warranty.

Warranty and core

Warranty: 1-year unlimited-mile warranty on the engine only; labor is not covered. Optional 3-year extended warranty available for $1,500 (includes labor coverage at $50/hr). See our Warranty & Refund Policy. Add the 3-year extended warranty to your order.

Core charge: none. All engines are built to order.

Questions about fitment? Contact us before ordering.