1974-1976 Corvette Heater & Air Conditioning Kit Small Block Gen IV Vintage Air, w/Factory Air

• For Corvettes Equipped With Factory Air Conditioning
• Blows Ice Cold Air Using Modern R-134A Refrigerant
• Fly-By-Wire Fully Electronic Servo Motor Controls With No Cables Or Capillary Tubes To Route
• Infinite "Just Right Temperature" Air Blending
• Infinite Blower Fan Speed Adjustment
• High Volume Dehumidified Defrost Mode 
• Separate High Capacity Aluminum Plate & Fin Cooling Coil
• Copper / Brass Cuprobaze Parallel Flow Heater Coil
• Mounts Completely Behind Dash, AC Exits Through Original Dash Vents
• Steel Firewall Cover Plate
• Does NOT Rely On Vacuum Like Factory System
• Adapts To Original "Thumb Wheel" Type Controls
• 3-Year Limited Manufacturer Warranty
• Made In The USA

• NOTE: This unit does NOT include engine pulleys.  You must determine if you have enough belt grooves on your water pump pulley and crank shaft pulley to add and operate the AC system. Steel and billet pulleys are available at an additional cost. Cars with factory AC should have enough grooves, but it should be verified.

The Short And Long Of Chevy Water Pumps

Chevy Corvette mechanical short style water pumps measure 5-5/8” high from the shaft down with the pilot shaft diameter measuring 5/8". Long style Chevy Corvette water pumps measure 7” high from the shaft down, and the pilot shaft diameter was 5/8" as well. Do not mix and match pulleys from short and long water pump engines because this will cause pulley misalignment. An easy way to find out what style you have while your pump is still installed on the engine is to try to stick your hand between the water pump and timing chain cover. If you can slip your fingers in-between you have a long, if not you have a short.

1974-76 Corvette Gen IV air conditioning system keeps you cool and comfortable in hot summer driving