K&N Universal Clamp On Filter Fits 2 in (51 mm) KNRC-1820 Product:4 in (102 mm) Base L x 3 in (76 mm) Base W x 2.75 in (70 mm) H x 3 in (76 mm) Top L x 2 in (51 mm) Top W - KNRC-1820 Unlike other roller pilot bearings

Unlike other roller pilot bearings

The limit is accurate to within 1% and operates by dropping the spark to individual cylinders then firing that plug on the next cycle to avoid filling the cylinder with fuel

This manual also seerves as an excellent tuning guide

Adjustable Vacuum AdvanceGM/HEI V8 Distributors with Vacuum Advance

K&N Universal Clamp On Filter Fits 2 in (51 mm) KNRC-1820 Product:4 in (102 mm) Base L x 3 in (76 mm) Base W x 2.75 in (70 mm) H x 3 in (76 mm) Top L x 2 in (51 mm) Top W - KNRC-1820 Unlike other roller pilot bearingsK&N Universal Clamp On Filter Fits 2 in (51 mm)4 in (102 mm) Base L x 3 in (76 mm) Base W x 2. 75 in (70 mm) H x 3 in (76 mm) Top L x 2 in (51 mm) Top W KNRC 1820 KNRC 1820 RC 1820 K&n's Universal Air Filters Ar e Designed And Manufactured Fo r A Wide Variety Of Applicatio ns Including Racing Vehicles, Radio controlled Cars, Generat ors, Snowmobiles, Tractors, An d Other Applications. Regardle ss Of The Angle Or Offset Diam eter Of The Air Intake,