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Thumbnail Filmstrip of 202403-04 RCD Blower Hub - RCD Big Block Chevy Blower Hub for use on all BB Engines Images
RCD BB Chevy Long Blower Hub -04 Our most popular hub
typically used with the 7" Crank Trigger Wheel , this hub pushes the pulley forward by 1/2" over the Short -02 hub.
Bolt with 200,000 psi tensile strength - http://www.alkydigger.net/proddetail.php?prod=RCD358850-38
Our crank hubs are machined from heat treated chrome-moly steel billet.
Each hub has two 1/4” keyways 180° apart, six 3/8-24 threaded holes in an evenly spaced pattern and a black oxide finish.
A stepped profile is machined around the holes for weight reduction and to lock-on the degree ring.
Allows the installation of the 7" RCD Crank Trigger Wheel