Specs on subframes?

[touring67]

With all the popularity of Pro Touring, there have been many manufacturers to come out with complete kits for many muscle era cars. Among the kits there are complete bolt in subframes that offer "vastly improved" geometry and handling for your specific car. In my case I look at the first gen camaro parts and kits, specifically the 67. In many cases the information provided by the manufacturer is of how complete the kit is or how easy it is to adapt or install. My question is, do they offer specifications for their complete kits (because anyone would be hard pressed to offers specs for a kit that could use any number of LCA, UCA, spindles etc) or do they just tell you that it's a "vast improvement"?

I would just like to know how well a subframe was to perform under the rigors of racing or aggresive street driving. Some may state tubing thickness or frame rail thickness, possibly advertise 0 bumpsteer but do not usually give out characteristics like camber, caster, how much it changes FRCH, COG or pivot points. Would there may be a way to calculate some of these characteristics that some of you know and might be so kind as to impart on me and others of this board? Or would it just be best to contact each manufacturer and ask?

Namely, I bring this topic up because I think that if one was to use a bolt in subframe (complete kit) and spend a good amount of money on it, that they may like to know what they are getting. Also it might help to clear up some issues with using the bolt in subframe (non complete) and substituting DSE or GW or AFCO arms, taller UBJ's etc. Since some of these arms have built in changes, it might be overkill with said frame.



Was just wondering if anyone has used subframes that did vastly improve their handling and if they have measured the results or characteristics after installing one. Right now I can think of Wayne Due, Fatman Fabrications, Chris Alston Chassiworks, Art Morrison, modified Corvette, and custom...and from there my memory fails me.

There are also kits such as DSE's stage 3 that use the stock subframe but substitue almost everything. And one could use a stock frame and do the Guldstrand mod with different parts as well. But my main question here is the 'other' subframes that are for sale. Any info??