Not every day you see a 1937 Crocker Hemi-head 1000 cc (61 cubic inch) twin cylinder genuine Crocker engine .
Gene Rhyne, a noted hill climbing champion in the 1920's & 30's, built all the engines while employed by Al Crocker in the 1930's.
Crocker's motto was
"if you are beaten by an Indian or Harley bring the machine back and he would refund your money.”
No refunds were ever neccessary.