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From the Chilton's Professional Labor Guide and Parts Manual 1977
Front Suspension , Rebuild
Includes: Disassemble, renew necessary parts, reassemble, lubricate and align front end.
Corvette--1970-77
one side 6.5
both sides 10.4
Depending on the condition of the parts you remove and what you want to do with them...they alone will eat up some time.
I have a cleaning tank and media blaster and that can speed things up a lot...and the correct tools for the control arm bushings to be installed without damaging the control arms.
So...you CAN POSSIBLY expect it to take longer than a day.
I have done it numerous times and if I am really moving and making every second count. I can get it done by the end of the day when I leave. I will have once side disassembled and cleaned and painted and drying and then get to the other side..and when that side is cleaned and painted..I put on the parts that I allowed to dry...so I have a couple things going on at one time.