LS1-Powered 2006 Lexus IS250 6-Speed

Listing Details

• Chassis: JTHBK262365000656
• 120k Miles
• 5.7-Liter LS1 V8
• Tremec Six-Speed Manual Gearbox
• Limited-Slip Differential
• Glacier Frost Mica Paint
• Black Leather Upholstery
• 19″ Velgen Classic Alloy Wheels
• BC Coilovers
• Aftermarket LED Headlights
• Power-Adjustable Front Bucket Seats
• Dual-Zone Automatic Climate Control
• AM/FM/CD Stereo
• Mahle Pistons
• Holley Fuel Rails
• Hooker Exhaust Manifolds

This 2006 Lexus IS250 was purchased by the seller in 2013 and then fitted with a built 5.7-liter Chevrolet LS1 V8. It is now also equipped with a Tremec six-speed manual transmission, an aluminum driveshaft, a Subaru BRZ limited-slip differential, Holley engine control, 19″ Velgen Classic wheels, IS350 front disc brakes, BC Racing coilovers, a Mustang II hydraulic steering rack, and a custom stainless steel exhaust system. Factory equipment includes air conditioning, a sunroof, and power-adjustable seats. This “IS570” is now offered at no reserve with one key, receipts, and a clean Florida title in the seller’s name.

The bodywork is finished in Glacier Frost Mica with an ISF-style front grille, aftermarket LED headlights, and “IS570” badges. The Carfax report notes a 2010 accident that resulted in damage to the left-front corner of the car. The seller notes that the repainted left-side fender shows discoloration when compared to the original bodywork and there is a dimple in the middle of the rear bumper.

The car has been fitted with 19″ Velgen Classic wheels, IS350 front disc brakes, BC Racing coilovers, and a Mustang II hydraulic steering rack in place of the factory electric system. The ABS controller is bypassed and the tires need to be replaced.

The seats are upholstered in black leather and various cabin surfaces have been retrimmed in vinyl and microsuede. The center console was modified to accommodate the manual shifter and a custom-fabricated carbon-fiber gauge pod is mounted on top of the center stack. Noted flaws include sticky surfaces on the rear door panels, low radio volume, and a Homelink rearview mirror that needs to be wired. A video describing the operation of the modified starting system and other cabin accessories can be viewed in the gallery. The video also describes the air conditioning system, which the seller states is operated by a switch to turn on the compressor while the main temperature controls manage the blower fan mode and speed. The seller notes RPM fluctuations when the air conditioning is initially switched on.

The factory gauge cluster remains in place though the tachometer reads 25% high. Warning lights for removed factory systems have been covered but are still faintly visible. The digital odometer indicates 120k miles, and the car has been driven approximately 16k miles since the LS1 was installed.

The 5.7-liter LS1 was sourced from a 2001 Chevrolet Camaro SS and the block, cylinder heads, and crankshaft were machined at Engine Rebuilders of Palm Beach. The seller built the engine using ported and polished cylinder heads, forged Mahle pistons, ARP rod bolts, Manley Race Series stainless steel valves, Trick Flow Beehive valve springs, a Trick Flow camshaft, a Trick Flow dual-chain timing gear, and a high-pressure Melling oil pump. The following components are also installed:

• Holley EFI engine controller
• Holley wiring harness
• LS6 intake manifold and throttle body
• Holley fuel rails
• Aeromotive fuel pressure regulator
• 28 lb LQ4 fuel injectors
• Hooker cast exhaust manifolds
• 2.5″ stainless steel exhaust system
• Magnaflow X-pipe and high-flow catalytic converters
• Borla ProXS mufflers
• 4” aluminum air intake with K&N filter
• Turn One billet aluminum power steering pulley
• BeCool radiator and fans