ELIMINATOR - Ultra Block

The Ultra block is essentially the same block as the Premier but is configured with different main bearing caps and fasteners. Designed for 2000 HP.

Bore size is 4.495” (ready for 4.500” hone), but capable of 4.700” bore diameter with a nominal .190” wall thickness
Designed to accept 18-bolt BBF heads with the correct angle at inside four bolt locations (10-bolt heads will work too!)
Solid Ladder valley tray with cross-supports for incredible top-end strength and capable of large lifter bores
Siamese water jacket design with additional jacket volume for water to assist cylinder bore cooling
Crankshaft main caps #1 - #5 are ‘nodular’ cast iron, 4-bolt and press fit; Splayed caps #2, #3 and #4
Main caps secured with Grade 8 bolts and hardened washers (can be upgraded to ARP hardware)
Main caps have hollow dowels to ensure proper location and alignment, after caps have been removed.
Cam housing bores machined to 2.500” diameter, thus accepting 54mm roller cam bearings