Introduction

Subaru EJ257 Stage 2 Street/Strip Camshafts by Brian Crower

BC uses small diameter grinding wheels during the finishing phase when applicable to generate a more aggressive ramp rate for a faster cylinder fill rate. More air + more fuel = more power. Although it takes longer to grind the cams, research and development has proven that the inverted radius created by the small grinding wheel on the opening side delivers more horsepower on radius and roller rocker applications than the conventional, large diameter grinding wheels.

All BC cams are checked on a high speed, sub-micron accuracy measuring gauge. The Adcole Camshaft Measuring System uses individual measuring heads for each cam journal and cam lobe, with .01 micron resolution, taking one datum point each 1/10th of a degree or 3,600 data points per revolution. Measuring camshafts for rise error and chattermark detection, the model at Brian Crower can measure 200 parts per hour.

Features

• Perfect for a plug and play application
• Short duration for nice street manners, slight lope at idle
• Excellent all purpose spec
• OEM spring OK as long as OEM redline is respected
• Higher rpms require springs and retainers
• Designed with a Bucket Diameter: 1.220″

Applications

• 2004 – 2021 Subaru STI
• Subaru EJ257

What’s In The Box?

• 4 – Camshafts

Warranty

• Manufacturer Standard Warranty