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B16A / B18C C30A / C32B SR20DET 2JZ NON VVT-i 2JZ VVT-i EJ205 G6DA V6 4G63 CHEVY LS
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EJ257B DUAL AVCS CAMSHAFTS
For the 2008 and up Impreza WRX STi, Subaru not only updated the chassis design, but also released a 2.5L engine with dual AVCS featured on both intake and exhaust camshafts. This engine is commonly referred to as the EJ257B platform. The STi is a series of low-volume versions with even greater power and grip were built by Subaru's in-house modifier, Subaru Tecnica International (STi). STi versions of the Impreza, which produced 280 PS (206 kW) from new, are often raced, largely unmodified, in the Group N class in various rally championships to great success. Introduced in 1994, the STi has proven to be a very popular high-performance machine in the Japanese domestic market.
Stage Description Part# Adv. Dur. Dur @ .050 Lift (in) Lift (mm) Kit# Cam Card Dyno Shop Status
Street/Strip Specification
Plug and play application. Short duration for nice street manners, slight lope at idle. Excellent all purpose spec. OEM spring OK.
BC0623 272°/272° 222°/222° .400"/.400" 10.16/10.16 BC0600 In-Stock
Race Specification
Longer duration profile, added rpm potential. Intended for fully built engine. Tuning and ECU mods recommended. Requires kit BC0600.
BC0624 280°/280° 234°/234° .425"/.425" 10.80/10.80 BC0600 In-Stock
USDM EJ257 (05-up STi) Stock 256°/256° 204°/208° .378"/.385" 9.60/9.78
JDM EJ254 Stock 256°/256° 211°/209° .374"/.371" 9.50/9.42
Bucket Diameter: 1.200"
619.749.9018 ph
619.749.9128 fx
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