samurino Posted October 24, 2007 Report Share Posted October 24, 2007 what kind of control arms and brake combo can i put on 521 frame or can i? cant find a donor 720 truck to put my cab on so i was thinkin just getting it piece by piece:mad: Quote Link to comment
datzenmike Posted October 24, 2007 Report Share Posted October 24, 2007 I think as far as bolt on, you are stuck with the stock 521 suspension. One of the guys here has a disc conversion for 620s (beebani?) 521/620 are similar. If no 720s better to get a '78 or older 620 frame.. has disc break front, ball joints, power assist brakes already on it. Might have a 5 spd in it too... '77 on. Quote Link to comment
Jester Posted October 24, 2007 Report Share Posted October 24, 2007 Is swapping frames between the two a fairly straight forward job. Not to ask if it's easy, I know better. If body and bed mounts are the same, that would be cool. Jester Quote Link to comment
datzenmike Posted October 24, 2007 Report Share Posted October 24, 2007 I swapped my '78 620 onto an '82 720 frame. That was a KC onto a long box frame. All I did was move the two front box mounts back 11" and it all fit on. The L20B fit the Z22 mounts. The shocks are differently mounted in the back, so what. The 521/620s are very similar frame wise I would think. Quote Link to comment
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