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LS front accessory drives for the 1977-1990 box Caprice and Impala. The 1977-1990 B-Body guide says a 98-02 F-Body A/C compressor hits the frame in these cars, so A/C runs on a high-mount bracket. Choose a High Mount A/C drive with compressor, an alternator and power steering drive, or one with the pump.
Oil pan and header clearances are covered in the 1977-1990 B-Body LS install guide. The crossmember, mounts and headers are on the 1977-1990 B-Body LS swap page.
Notes from the BRP 1977-1990 B-Body LS install guide. Drive names and lengths come from the product listings.
No. The 1977-1990 B-Body guide says that compressor does not clear the frame and a high-mount A/C bracket is required.
The guide says a 98-02 F-Body alternator clears the frame with plenty of room. The high-mount requirement is for the A/C.
The guide says the A/C and alternator/power steering brackets clear everything in all three spacings. Match the length to your balancer.
Only the w/Pump drives. The plain alternator and power steering drives reuse a pump you supply.
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