Remanufactured GM 6.0L-based LS 408 stroker V8 (4.030" bore x 4.000" stroke) on a PES-supplied iron 6.0L block, with a forged rotating assembly and a Stage 1-2 cam installed (Brian Tooley Racing, any make on request). Built as a replacement for 2001-2007 LQ4 / LQ9 and 2007-2019 LY6 / L96 Chevrolet, GMC, Cadillac and Hummer trucks, SUVs and vans. Choose your engine style, build and delivery type above. Zero miles, built to order, free shipping, no core charge.

Build time: 4-5 weeks, plus shipping.

Fitment

LQ4 / LQ9 style (24x reluctor, 2001-2007)

LY6 / L96 style (58x reluctor, VVT deleted, 2007-2019)

2007 Silverado / Sierra: 2007 "Classic" trucks use the LQ4 / LQ9; 2007 new-body 2500HD / 3500HD trucks use the LY6. Confirm by VIN.

2020: call 623-204-6365 before ordering.

Confirm your engine

• Engine style: choose LQ4 / LQ9 style or LY6 / L96 style above. The style sets the crank reluctor (24x or 58x) to match your ECM.
• VIN 8th digit and RPO code: U = LQ4, N = LQ9, K = LY6, G = L96. The RPO code is on the Service Parts Identification (SPID) label, usually in the glove box.
• Gen III vs Gen IV: LQ4 / LQ9 are Gen III engines with a 24x crank reluctor and the cam sensor at the rear of the block; LY6 / L96 are Gen IV engines with a 58x crank reluctor and the cam sensor in the front cover.
• Not sure? Choose "Not sure" in the dropdown and call 623-204-6365 or put notes on the order.

Send us your VIN with your order to confirm fitment.

Notes

• We supply the iron 6.0L block, sonic-checked and bored to 4.030", so your core block isn't used.
• Every 408 is built non-VVT. LY6 / L96 style builds get a VVT delete; the front cam sensor stays.
• Stock-style 6.0L cylinder heads, not ported or polished.
• The valley plate (lifter valley cover) is not included. Reuse yours from your current engine.

Not covered

• L76 / L77 and all other aluminum-block 6.0L engines (including LFA / LZ1 hybrids)
• LC8 (VIN B), 6.0L CNG/LPG
• 1999-2000 LQ4 with cast-iron heads
• 2020 and newer: call us

Build stages

Same price for every stage. Choose your engine style and build (stage and rod type) above.

• Stage 1 Tow / Daily: built by BTR for daily driving and light-duty towing in 400-416 ci trucks.
• Stage 2 Street Truck: built by BTR for daily-driven 400-416 ci trucks with some light-duty towing; more power than Stage 1.
• Power: this is a torque build. Comparable 408 builds make about 500+ lb-ft on an engine dyno with headers, roughly 80-120 lb-ft more than a stock 6.0L under the same conditions. In-truck numbers are lower.

Rods: forged 6.125" I-beam rods standard; forged H-beam rods +$500.

Custom / other brand cam (+$300): we can use any make of camshaft you request (Brian Tooley, Texas Speed, Comp, Cam Motion and more). Custom grinds are non-refundable.

Results vary with tune, converter, gearing and supporting mods.

Every build includes

• Iron 6.0L block, sonic-checked, bored and honed to 4.030"
• Forged 4.000" stroke crankshaft with reluctor matched to your engine style (24x or 58x)
• Forged 6.125" rods (I-beam or H-beam)
• Forged dished pistons, about 10.0-10.4:1 compression with stock-style 6.0L heads
• Internally balanced rotating assembly
• New oil pump
• ARP head studs and MLS head gaskets
• Non-VVT cam installed, with matching valve springs and hardened pushrods
• VVT delete on LY6 / L96 style builds

Required / recommended

• Tune required. A tune is required for the displacement, cam and (LY6 / L96 style) VVT delete. We do not tune.
• Matching reluctor: the crank reluctor (24x or 58x) must match your ECM. That's why you choose your engine style above.
• Fuel system: have your tuner check injectors and the fuel system for the larger displacement.
• Converter / gears: per the stage table above.
• Fuel: 91+ octane recommended.

Other 6.0L versions

Prefer a stock or cammed 6.0L? Check the 8th digit of your VIN and see:

• 2001-2007 without VVT (LQ4 VIN U / LQ9 VIN N): see our GM 6.0L non-VVT (LQ4 / LQ9) listing
• 2007-2020 with VVT (LY6 VIN K / L96 VIN G): see our GM 6.0L VVT (LY6 / L96) listing
• Stock 6.0L displacement with a Stage 1-3 cam: see our Cammed GM 6.0L Vortec (2001-2019, Stage 1-3) listing

What's included

• 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, lifters
• 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. Approx. weight 650 lbs.

Break-in

Follow our break-in procedure.

Warranty and core

Warranty: high-performance build, sold without warranty. If something's wrong, we'll work with you case by case to make it right. See our Warranty & Refund Policy.

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

Returns and cancellations: this is a high-performance upgrade, so there are no refunds or returns. You can cancel within 24 hours of ordering for a full refund. Custom grind cams are non-refundable.

Questions about fitment? Contact us before ordering.