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STRICTLY Boost Prep 5.3 LS-Series Long Block

STRICTLY Boost Prep 5.3 LS-Series Long Block

Some more info about the STRICTLY Boost Prep 5.3 LS-Series Long Block

Based on a Gen 4 or Gen 3 5.3L GM LS series engine, this budget setup bridges the gap between a "junkyard build" and a fully built, forged internal performance engine. Professionally machined and assembled in house, our BoostPrep engines offer an effective solution for today's popular forced induction setups on the GM LS platform.

Utilizing the factory 5.3 block, crank, Gen 4 GM connecting rods, OE replacement pistons with a high quality skirt coating and hard anodized top, this engine is capable of handling 800+ HP. Couple that with all of the performance upgrades included in this engine and you're ready to throw on a turbo and turn it up!


Performance Upgrades

- BTR/LJMS Turbo Cam

- CNC Ported Heads

- BTR Dual Valve Springs

- BTR Hardened Pushrods

- ARP Head Studs

- Upgraded Trunnions

- Melling High Pressure High Volume Oil Pump

- New OE Piston Rings Gapped to .028 top and .030 Bottom

- King XP-Series Rod bearings

- King XP-Series Main Bearings

- LS7 Lifters


New/Replaced Parts

- Reconditioned Gen 4 Connecting Rods

- Hard Anodized Top OE Replacement Pistons

- OE MLS Head Gaskets

- New Lifter Trays

- New Oil Galley Plug

- New Coolant Plugs

- New Balancer Bolt

- New Timing Chain

- New Cam Bearings


Machine Work/Prep

- Iron Blocks are Baked, Blasted, and Painted

- Cylinders are Bored and Honed using a Torque Plate

- Engine Block are Decked

- Cylinder Heads are Resurfaced

- Multi Angle Valve Job

- Crankshaft Polish

- All Components Hot Tanked and Final Washed prior to Assembly

- Full Rotating Assembly Rebalanced on Gen 3 Configurations


No Core Required

Generally Ships in 2-3 Weeks