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Old 10-07-2017, 02:11 AM   #10
nikwho
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Join Date: Apr 2010
Location: Flagstaff, AZ
Posts: 974
Re: triangular four link & 72 firebird sub frame on a 56 chevy truck

I know that there are higher quality/newer technology crossmembers out there, but you have to pay for them. I think that an F-body sub frame is a pretty good option. I used a '79 subframe in my '59 Apache and am happy with the outcome. The No Limits DVD is well worth whatever Rob @ No Limit Engineering charges for it and will pay for itself many times over in time saved. I personally am not a fan of welding the sub frame to the bottom of the frame, as it looks liie a blatant after thought. Lower, yes, but I would rather spend the money on a set of drop spindles and or springs/bags and have a cleaner graft. I think that triangulated 4-links are the way to go. The satchel links are also worth looking into. Depends on what you want to do with the truck. A parallel 4 link would probably be easier to fabricate and perhaps a little more forgiving than designing your own triangulated 4 link, as far as fabricating mounts goes. Good luck!

Nik
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'59 Apache - 383" SBC/TH-350
'68 GMC - BBC/TH400
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