For 604 Includes 1- 3.5" 7MM SBC CRANK PULLEY 1- 7MM SBC WATER PUMP PULLEY 1- 7MM.ALTERNATOR V-PULLEY .590" BORE 1- POWER STEERING PUMP 1- SBC POWER STEERING BRACKET KIT 1- SBC ALTERNATOR MOUNT 1- 615 7MM. V-BELT 2- 650 X 7MM V-BELT 1- 730 x 7MM. V-BELT 1- 7MM HEX CRANK DRIVE 1-BRP6099 -WATER PUMP SPACERS 2-BRP1631-1/8" P/S PUMP SPACERS 1-BRP9077-5/16" CRANK PULLEY SPACER.
Very small and strong 7mm wide belts-For Extreme Low Drag Crate Motor Set ups.
7MM is equal to .280" Inch-just over a 1/4" wide belts for Super Low Drag on the engine.