July 13, 2009
All Crate motors will be allowed 1.6 rocker arms. Total weight 3025 Right side weight 1350 rockers may not be mixed.
Dodge blocks permitted at this time will be casting numbers P4532907, P4532908, P4532909, P4532910, 2870930-M, P5153477. P4876792 and P487691 (Casting numbers may be added)
These blocks must remain as manufactured from Mopar and Dodge.
No added machine work may be done to the lifter galley or exterior of any of the blocks
The Dodge block P4876792ac and P487691ac may be machined over the camshaft for oil return only.
Anyone with a dodge block that has any questions Please call the UARA office
The valve stem diameter may be undercut to a minimum of .302 not 5/16