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I must have wandered around boneyards for 3 days trying different U joints that were compact enough to fit between the 56 column and the Cavalier rack. Finally I just bit the buellet and bought a set of Borgesons, single swivels for the ends and the support bearing with double U joint in the middle. The time I woulda saved  by doing that the first time I could have used for something constructive.

Dave R

Does the double count  as 2 joints meaning you have 4 joints? Would you not  then need 2 support bearings in this setup?

The TV that I was refering to had nothing to do with the transmission TV. I was refering to temperature switches that control vacuum to emission devices. TVS means thermal vacuum switch in this case.

I have the gm manual for the 86 olds cutlass that ran the 305. It says ,"too little or no EGR flow allows combustion temperatures to get too high during acceleration and load conditions. This could cause -spark knock (detonation)-engine overheating- emission test failure.
I actually have an 83 and 86 3.8 v6 but they are canadian cars so they do not have the computer. The EGR valve is controlled by carburator vacuum through a TV switch to prevent cold operation of  EGR. My son had a 86 regal with 305 and it was same. You could consider getting the EGR valve for this version of the 305 . You would also need the TV switch. If you are interested I could send you info from the canadian manual on the 305 egr setup.

I  do have the G body rearend with the upper arm brackets cast on the housing but my thought was that they are too high which would result in the top bars having to point down to have front ends bracketed to side frame rail. Also they would be quit short in length  because of the angle of the brackets on rear end.

Thanks, from what I've seen A's the bars are about 22 in long. That's probably because a longer bar would put the mounting brackets too far ahead and interfere with other parts e.g saddle tanks. You mention having the upper bar point in to eliminate panhard bar. Again what I have seen so far is that for this triangulated setup they mount  top bar closer to centre on the axle and point it outward to mount on the inside of the frame rail. Apparently this can be a problem on GM rears as the centre housing is cast and presents welding issues for the bracket. To point in as you say I see using a cross member to run the bar to and of course then the top bar would mount outward on the axle closer to the bottom bar. I am becoming more interested in the triangulated as my setup has a wrap behind rear cross member on a 3 in. kickup, narrowed frame and I don't see easily where I can run the panhard bar. I have read also , need to followup where in the paralllel 4 bar the role of panhard can be done by a bar going from rear bar connection of right side to forward bar connection on left side. I can see how that creates 2 triangles that should oppose side movement of the axle in both directions.

I am considering building my own for a 29 A sedan and would like to know some guidelines.

found this on another forum. If you look up 83 Omni on Rockauto.com you get several other available switches

And the answer is---NAPA part number FS120. This is a brass fitting with 1/2"NPT male end on it that screws into a small block chev intake manifold just to the left of the water neck. When your engine temperature gets to 190 degrees Fahrenheit, this switch will pass current between the two attached wire terminals. The wire from one terminal (it doesn't matter which) goes to a ground, the other runs to the ground side of a 30/40 Amp relay, which will turn on your electric fan. The part costs $29 in Canada, and the relay costs $5, and if you get fancy and buy a premade pigtail that plugs into the relay, it costs $5.  The switch I purchased was carried in stock, but the NAPA man wasn't able to tell me what car it was off of.

Email fitzwell Who is fitzwell?    fitzwell       May 11, 2005 - 11:57 AM    
ask him to look in the illustrated guide, this has the listing by part # and a brief listing of what it fits (if the part is application specific)

Email 72cheyenne Who is 72cheyenne?    72cheyenne       May 11, 2005 - 12:00 PM    
Brian, that fits an 83-85 Dodge Omni. They will not work without a relay. I have a friend that used one on his corvette. They work great and last a long time. I am sorry I forgot about those the last time you asked for info on these.-Brant