Crank Support Assm. BBC Cradle Extended

Categories:
Engine
Crank Supports
RCD

*** IN STOCK SHIPS TODAY *** RCD extended BBC crank support assm. This support has been designed to minimize the bending stress imposed on the snout of the crankshaft caused by harmonics or driving of a supercharger. Few people realize just how much a crankshaft can distort during harmonics, or that supercharger belt load can be in excess of 3000 pounds when detonation occurs. With the supercharger belt pulling the crank snout upwards, and the first two piston and rod assembles pressing downward, this area of the crankshaft is in need of some additional support. By adding a crank snout support, in essence a sixth main bearing, the vulnerable unsupported snout has less chance of bending and breaking. Race engines, especially those prone to detonation, are the applications most in need of this support.

The aluminum bracket and stand assembly that hold the front bearing mounts to the front of the block off the four 7/16" bolt holes that are on the front of most BBC engine blocks. Kits include mounting plates, stands, bearing, and mounting hardware but the racer will still need to purchase the crank hub, crank bolt and degree ring seperate. RBS can set up the crank support to be used with crank trigger at an additional cost if desired.

Fits 396, 402, 427, 454 and most other aftermarket big block chevy engine combinations. Extended crank supports are designed for competition use and have no provision for an altenator and are designed for the racer that wants to run a Pioneer/Summers Bros. front mag drive and needs additional clearance. The stands are extended out and the bearing is moved back in a offset housing to give the approximate one inch additional clearance that is needed when running that type of front mag drive.