What is a shackle flip?

[13lazer]

i'm about to put my 1972 k5 back together. my frame off resto is about to start up again. i have a 14bff rear w/4.10's and a new set of stock 3/4 ton rear leafs. my original intention was to build it as close to stock as possible with no lift. now im leaning towards a mild performance upgrade focusing on durability.
id like to hear from you guys who have made simple modifications that made genuine improvements. i also have a 3/4 ton 10 bolt front with the big tubes from 1979 i think, and my original front springs. my frame is completely stripped and has been blasted and painted with por15. my options are open at this point and i'd like to avoid as much rework as i can. or at least my usual re-rework.
thanx in advance
13lazer

 

[southernspeed]

Check out ORD's website (one of our sites' sponsors) and read about the flip. Also look on the tech pages where there is a write up on the flip kit. Basically it allows a 2 1/2" or 4" rear lift using stock springs and no blocks giving a stock like ride as opposed to arched rear lift springs' firm ride.

 

[GotBoykins]

Shackle flips basically take your tension shackle and turn it into a compression shackle. here are a few links that may help explain better. There are several different types, homemade, DIY, ORD, Echobit style. Just have to find one to your liking. They generally provide around 4" of lift. Do a search and you will get lots of finds.
http://coloradok5.com/photos/showphoto.php/photo/4934/si/shackle

http://coloradok5.com/photos/showphoto.php/photo/1171/si/shackle