Evan’s Holden VX Calais International still retains a stock LS1 V8 engine. Performance is greatly aided by a ProBoost turbocharger. The car was on the dyno on low boost pressure at Northern EFI’s dyno day recently and then backed it up on the track at Heathcote Raceway.
2001 Holden VX Calais International
GM LS1 346ci [ stock internals ]
ProBoost GT42 turbocharger
Precision 66mm wastegate
4in dump, twin Xforce 3in exhaust
T400 3spd auto, 3500rpm stall
Stock IRS rear with 3.46:1 gears
Tuned by: Giuliano automotive
Low boost testing
Northern EFI dyno day & Heathcote Park Raceway