Remanufactured GM 6.0L Vortec V8, non-VVT (LQ4 or LQ9), for 2001-2007 Chevrolet, GMC and Cadillac trucks, SUVs and vans. 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

• Check the 8th digit of your VIN (U = LQ4, N = LQ9) or the RPO code on the Service Parts Identification (SPID) label in the glove box (LQ4 or LQ9), and choose your engine code from the dropdown. Send us your VIN to confirm fitment.

Casting numbers

• Block (LQ4 and LQ9, cast iron): 12551364, 12573581 or 12577184
• Cylinder heads (aluminum, cathedral port): 317 or 035 (last 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.

Notes

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

Not covered

• 1999-2000 LQ4 with cast-iron heads
• LY6 (VIN K, 2007-2009) and L96 (VIN G, 2010-2020), VVT: see our GM 6.0L VVT (LY6 / L96) listing
• L76 (VIN Y), L77 (VIN 2), LFA (VIN 5) and LZ1 (VIN J) hybrids, LC8 (VIN B) CNG/LPG

Other 6.0L versions

Not a 2001-2007 LQ4 / LQ9? Check the 8th digit of your VIN and see:

• 2007-2020 with VVT (LY6 VIN K / L96 VIN G): see our GM 6.0L VVT (LY6 / L96) listing
• Want more power? Cammed 6.0L (LQ4 / LQ9 / LY6 / L96) with a Stage 1-3 cam: see our Cammed GM 6.0L Vortec (2001-2019, Stage 1-3) listing
• Want even more torque? 6.0L-based LS 408 stroker (iron block, BTR Stage 1-2): see our GM 6.0L LS 408 Stroker 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 6.0L 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 450 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.