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Here's a Kwik and easy solution to your LSx engine swap AC compressor problems.
You may have clearance issues with the frame or crossmember. That's especially true for chassis such as S-10s, early Camaros and Chevelles, and many full size Chevy pickups.
You may be concerned about the LSx "variable displacement" compressor being compatible with your earlier factory AC system or with an aftermarket system.
Here's how to solve those problems:
Use an aftermarket compressor like the popular Sanden.
Mount it with a bracket kit from Kwik Performance, Inc., available in three different versions: Corvette, Camaro/Firebird/GTO, and truck/SUV.
Features and benefits
Stresses and vibrations evaluated with Finite Element Analysis and prototype testing.
Tensioner placed in its proper position - between the air conditioner compressor and the crankshaft pulley, in the slack portion of the belt.
Belt and tensioner geometry optimized for proper belt tension - equivalent to OEM tension requirements.
All pulleys aligned with each other within SAE specifications.
Zinc plated fasteners used throughout for corrosion resistance and great appearance.
All brackets made from 6061-T6 aluminum for light weight, good looks, and rust-free appearance. Matches the all-aluminum LSx engines.
All plates are cut on a computer-controlled, ultra-high pressure water jet.
All tensioners, pulleys, belts, compressors, alternators, etc. are standard, easily available items.
Uses Sanden 508, SD5, or SD7 compressor.
Front and rear compressor attachment plates.
Tensioner - New design has the pulley in line with the pivot shaft so there is no need for an extra alignment shim
Idler pulley mount.
All fasteners needed to attach the brackets to the engine, and the compressor to the brackets.
Smooth pulley for use on the tensioner.
What else is required to complete the installation:
Six-rib belt, length such that the tensioner indicator arrow is between the max and min marks.
A Sanden air conditioner compressor, part number 4514 (SD5 series), 4522 (SD5 series), 4665 (SD7 series), or 9537 (508 series). In addition, because of the wide variety of Sanden compressors, other part numbers with the same pulley placement will work. Contact Sanden for other options.
Installation instructions can be found in document tab above