BBC MARK 4 BELT DRIVE SYSTEM DART BIG M

Description

Dan Jesel invented the Small Block Chevrolet Belt Drive back in 1982 with one goal in mind, to make the most accurate and durable cam timing system available. And in its 29 years of existence, our Belt Drives have often been duplicated, but never matched. Whether you’re running a 24 hour endurance race or a 5 second pass down the drag strip, you can count on JESEL to get you to the finish line first. Our drives reduce the amount of harmonics being transferred to the camshaft and have been proven over the years to outlast chain drives.
Introduced in 2009 and available for our more popular drives, JESEL has introduced a cost effective, solid upper pulley design drive. This new drive shares all of the components from our standard drive with the exception of the upper pulley. Cam timing is adjustable externally 8° in 2° increments.

BELT DRIVE FEATURES:
Patented High Torq Drive reinforced belt operates dry and spins with less friction than timing chains or gear drives and also absorbs harmonics.
Hardware is Grade 8 Allen and Torx head design.
Crank Pulley is heat-treated steel and incorporates a High Torq Drive tooth configuration.
Teflon coated high vacuum cam and crank seals.
Cam timing adjustment is made externally providing the easiest and most accurate tuning available.
Hard coated Billet Aluminium Upper Pulley features patented High Torq Drive tooth configuration.
Accessories available to run distributor drives, fuel pumps or oil pumps off front of cam.
Cam timing is externally adjustable.

2 Piece Upper Pulley Design is infinitely
adjustable 10°.