GM Ecotec Exhaust & Airflow Tech | Headers & Manifolds | BK Racing

featured Reground Ecotec Cams & Valve Stem Height: Why Geometry Matters

Running reground Ecotec cams changes more than lift and duration. Learn how reduced base-circle diameter affects rocker geometry, lash and valve stem height—and why BK Racing developed extended-tip valves and...

On Sep 24, 2026 by GoldenWeb 0 comments

21-4N vs Inconel Ecotec Exhaust Valves: Which Material Should You Run?

21-4N vs Inconel vs OEM Ecotec Exhaust Valves: Which Material Should You Run? Is Inconel automatically the best material for an Ecotec exhaust valve? No. Inconel is an exceptional high-temperature...

On Sep 24, 2026 by GoldenWeb 0 comments

Best Ecotec Header: 2.2 vs 2.4, Long Tube vs Shorty, and What Actually Makes Power

Two Ecotec engines. Same cams. Same cylinder head. Same exhaust system. Different headers. One makes more power. The other doesn’t. Why? The answer lies in scavenging, exhaust velocity, collector design,...

On Jun 23, 2026 by GoldenWeb 0 comments

Fitting the BK Racing Long Tube Header in a J-Body BK Racing

Fitting the BK Racing Ecotec Long Tube Header in a J-Body

Can a true long tube header fit a Chevrolet Cavalier or Pontiac Sunfire? The answer surprises many Ecotec enthusiasts. From engine mount positioning and tunnel clearance to thermostat housing modifications,...

On Jun 23, 2026 by GoldenWeb 0 comments

Ecotec Exhaust & Airflow

featured Reground Ecotec Cams & Valve Stem Height: Why Geometry Matters

21-4N vs Inconel Ecotec Exhaust Valves: Which Material Should You Run?

Best Ecotec Header: 2.2 vs 2.4, Long Tube vs Shorty, and What Actually Makes Power

Fitting the BK Racing Ecotec Long Tube Header in a J-Body

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