Donor Vehicles
Where to find LL8 engines and compatible transmissions.
LL8 Engines (2002-2009)
Donor Vehicles
Chevrolet TrailBlazer: 2002-2009
GMC Envoy: 2002-2009
Buick Rainier: 2004-2007
Isuzu Ascender: 2003-2008
Saab 9-7X: 2005-2009
WARNING - 2002-2003 Engines
Problem: 2002 and early 2003 engines use M10 x 1.5 flywheel bolts. No flywheel-rated fasteners available in this thread pitch and length
Recommendation: Use 2004+ engines to avoid this issue entirely
Manual Transmissions
AR5/MA5 (Direct Bolt-On)
Chevrolet Colorado: 2004-2012
GMC Canyon: 2004-2012
Hummer H3: 2007-2010 (3.7L I5 only)
Pontiac Solstice: 2007-2009 (requires bellhousing swap)
Saturn Sky: 2007-2009 (requires bellhousing swap)
Other Options (Require Adapters)
T56: Camaro, Corvette, Mustang GT
TR6060: Camaro SS, Challenger, Corvette
NV3500: S10, Silverado 4.8L/5.3L
AX-15: Jeep Cherokee, Wrangler
Automatic Transmissions
4L60E (Direct Bolt-On)
Advantage: Bolts directly to LL8, no adapter needed
Source: Nearly every GM RWD vehicle 1993-2013
Weakness: Known for fragility, needs rebuild for high power
Power Limit: ~350 hp stock, 450+ hp when built
TH400 / 4L80E (Requires Adapter)
TH400: Classic 3-speed, bulletproof, handles 1000+ hp
4L80E: Electronic 4-speed, overdrive, handles 600+ hp stock