CBM MOTORSPORTS™ 2.5L LCV ECOTEC

The 2.5L Gen III Ecotec block has been reworked to reduce engine noise and vibrations, while improving fuel economy and low-end torque. The new combustion system developed with GM’s proprietary computational fluid dynamics (CFD) analysis software features a higher compression ratio which helps improve fuel efficiency and has improved knock resistance.

The engine features dual overhead camshafts with continuously variable valve timing and increased-authority cam phasing (increased phase rotation angle), a high-pressure return-less direct-injection fuel system with camshaft-driven fuel pump.

The balance shafts have been relocated from the cylinder block to oil pan module. The two-piece steel-aluminum oil pan features in-pan integrated oil-pump assembly driven by the balance shaft with a shorter inverted-tooth chain.

Other improvements include inverted-tooth chain driving the camshaft, forged steel crankshaft, cast aluminum bedplate with main bearing cap inserts made of iron, high-pressure fuel rail with rubber-isolated assembly, and structurally enhanced aluminum camshaft cover and front cover.

Base Package Included Components:

• 2.5L Ecotec LCV tested engine (10k-40k mi).
• CBM/GM ECU with custom operating system and custom tune.
• CBM Custom engine wiring harness with expandable sleeving.
• CBM Billet transmission adapter plate.
• CBM Billet 8″ single disk Ecotec flywheel.
• Kennedy 8” 6 Puck single clutch disk and pressure plate.
• Delphi 150amp Ecotec Alternator and belt.
• ACDelco Electric throttle body.
• GM Electric throttle body foot pedal.
• GM Stock Ecotec oil pan.
• CBM Fuel system (pump, pre filter, post filter, regulator, gauge, fittings).
• CBM Billet -6AN fuel rail fittings.
• CBM Billet rear water neck, your choice of (-16AN short, 1.25″ hose barb short, -16AN long or 1.25″ hose barb long).
• CBM Billet thermostat delete (your choice of (-16AN short, 1.25″ hose barb short, -16AN long or 1.25″ hose barb long) .
• CBM Billet a/c delete bracket.
• CBM Billet EGR port block off plate.
• CBM Ecotec engine stand.

Component Upgrades Available:

• CBM Custom engine wiring harness with Raychem DR25 sleeving.
• Kennedy 9” 6 Puck single clutch disk and pressure plate.

Add-on Components Available:

• CBM 2.5L Ecotec LCV mild steel ceramic coated side dump header with v-band.
• CBM 2.5L Ecotec LCV mild steel ceramic coated side dump header with muffler.
• CBM 2.5L Ecotec LCV stainless steel side dump header with v-band.
• CBM 2.5L Ecotec LCV stainless steel side dump header with muffler. 
• CBM 7″ Conical Air filter with Outerwear Pre filter.
• Sweet Manufacturing Power steering pump 
• CBM Billet 2.5L Gen III Ecotec power steering bracket with pulley. 
• SCORE/SNORE/MORE Race engine seal. 

An optional remanufactured GM, zero miles version of this engine is also available.

Each CBM Engine is made to order. Custom options are also available, we have clutch kits, transmission adapter plates, power steering components, complete fuel systems, accessory drive systems and data acquisition/display systems to fit your application.