Drag Illustrated Issue 182, May / June 2023 - Page 90



■ Dan Jesel invented the Small Block Chevrolet Camshaft Belt Drive back in 1982 with one goal in mind . To make the most accurate and durable cam timing system available . And in its almost 40 years of existence , our Camshaft Belt Drives have often been duplicated , but never matched . Whether you ’ re running a 24 hour endurance race or a 4 second pass down the drag strip , you can count on Jesel to get you to the finish line first .
Built with the finest materials available , our Camshaft Belt Drives feature several performance and valve train stability enhancements over traditional timing chains and gear drives . The Gates patented High Torq Drive™ reinforced belt spins dry on a steel crank pulley and a hard coated aluminum upper pulley and helps isolate crankshaft harmonics to the valve train . Teflon ® coated high vacuum cam and crank seals are long lasting and insure the extreme amount of vacuum found in today ’ s race engines stays sealed in the crankcase . Cam timing can be externally adjustable ± 10 ° in minutes to dial in the power curve and cam thrust can be reduced to as little as . 001 ” with our available dual thrust cam adapter assemblies .
Another advantage to running our Camshaft Belt Drive is the ability to swap out cams directly through the front cover . Cam swaps can be performed quickly without needing to remove the oil pan by simply removing the upper cam pulley and un-bolting cam seal plate saving countless hours during dyno sessions .
With over 42 applications from OEM blocks to aftermarket raised cam blocks , you can be certain that the Camshaft Belt Drive used to win countless championships will provide you with years of durable race winning service .
Features & Benefits
• Patented High Torq Drive™ reinforced belt runs dry , spins with less friction than timing chains or gear drives and absorbs harmonics .
• Kit hardware is all Grade 8 Allen and Torx™ head design .
• Cam timing is externally adjustable .
• 2 Piece Upper Pulley is infinitely adjustable ± 10 °.
• Crank Pulley is heat-treated steel and incorporates a High Torq Drive™ tooth configuration .
• Hard coated Billet Aluminum Upper Pulley features patented High Torq Drive™ tooth configuration .
• Teflon ® coated high vacuum cam and crank seals .
• Accessories available to run distributor drives , fuel pumps or oil pumps off front of cam .


■ Get the driveshaft you want with performance-rated components from end to end with a Sonnax splined stub and sleeve kit . The ideal upgrade for muscle cars , custom street rods / hotrods and heavy-duty trucks , these precisionmade parts from Sonnax — one of America ’ s leading drivetrain parts innovators — set a new industry standard for assembling a rugged , slip-style shaft that ’ s easy to build , balance and service .
A one-piece driveline with a Sonnax splined stub and sleeve increases strength and responsiveness while eliminating high-wear items found in modern drivelines like guibos , CV-joints and carrier bearings . The kits also are perfect for adapting powertrains and customizing shaft length in performance vehicles that can ’ t run a slip yoke . The yoke / stub shaft uses a conventional U-joint , and the sleeve installs easily onto the end of an aluminum or carbon fiber tube of almost any length .
While the concept of a stub and sleeve isn ’ t unique , Sonnax brings performance and durability to a new level . Every yoke / stub shaft and sleeve is carefully machined from 6061-T6 aluminum and matched to deliver the most precise and uniform spline fit available . Sonnax components are also engineered for increased strength in critical areas , with more spline teeth than similar products . All these features combine to guarantee hassle-free assembly , dramatically raise torque capacity and achieve a far smoother power delivery than other aftermarket slip and stubs .
A range of Sonnax kits are available for 3.5 ”, 4 ” and 5 ” tube sizes in 1330 , 1350 and 1480 U-joint series — contact your driveshaft specialist to spec out a build . Find details on these and other Sonnax upgrades , including performance build examples for Camaro , Mustang , Challenger , Charger , Hellcat and Demon , at www . sonnax . com .


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