z28z34man

please don't laugh but these are my extra heavy duty sub frame connectors

djtricia

iTrader: (4)

I don't see anything wrong with what you've done. As long as it works for you that's all tha matters. Obviously it's not for show but go.

Vader

Hot rolled channel? Umm...yeah. That should do it. A little overkill there?

That should certainly stiffen things up, and weight them down. Fortunately, a lot or that weight will be at the rear, where it can't hurt as much. That's almost like a factory perimeter frame now.

Nice bead back at the rear LCA mount, too. You planning on painting it all?

Sonix

iTrader: (1)

ugly, strong, heavy, improves handling.... that's my kind of mod!!!

That looks great, (well, looks like it'll work great), good welding quality from where i'm sitting as well. Must have been rusty too.
Mig?

z28z34man

extremely rusty on the drivers side the floorboards where rusted thru and the frame on that side was a little soft

that is not paint that is under coating i will get the rest when i can get to a hoist

Mark1963

They're fairly meaty sub-frames, did you fit them because your car has t-tops?
I've got spohn subs, but I haven't fitted them yet. My welding is not good enough, I'd probably melt holes everywhere.

radialflyer

i think those sub frame connectors are better than the ones tyou buy from most aftermarket companies

ttypecamaro

iTrader: (2)

it looks like the body would break off before the frame bends! I'd say its way overkill, but if that metal was all you had, then cool. good overhead welding.

83 Crossfire TA

iTrader: (2)

Is that c-channel on the passenger side and box on the drivers? Do you have pictures of the car from the side? How visible are they?

Otherwise… nice welds and hey, whatever works. On one of my brother’s old cars we used some 2x4 channel from large equipment racks a TV station was throwing out…

z28z34man

i will take picks tonight

that was steel left over from building my car trailer

ya that is 2x4 square on the drivers and c channel on the passenger to allow for room for my custom true duels

z28z34man

here are the side picks the first pick shows a little bit more than normal because it is on a side hill

vorgath

What thickeness is the square tubing you used, i.e. what how thick's the actual wall of each tube ? And what's the weight ?

Reason I'm asking is I've been holding off on my SFC project, since the round tubing I got, may be way too heavy, the wall thickness is almost .25. A hmm 6 foot section or so of it, weights 18 lbs

z28z34man

i don't know but it is heavy it is what was leftover from building my heavy duty trailer

vorgath

I may just have to take a pic of the tubing I have, and show it to you guys.

dan_o_89_rs

mmmm, BEEFY! lol ive been thinking about fabbin some up. i noticed your exhaust tho, is that a dual in dual out muffler? and is it right under the pass. seat? this is what ive been wanting to do. looks good n fun...

Randy82WS7

wow that 84 looks identical to the one i had, how long have you had it ?

here is the 84 i had:





this was a couple or three years ago now since i sold the car, and it didnt have the connectors under it or the blue oil pan lol

apparently they sold a bazillion brown and gold 84 z-28 i keep seeing them all over now all of a sudden



those are some badass connectors now, i need to make a set for the 82


tell me about the exhaust where/how did you get it ?


thanks

z28z34man

i have had mine for about 3 years now and when i bought it it was a steaming pile. it had a bad dent and rust in the driver 1/4 panel. the passenger 1/4 had rust and a lot of bondo. also the driver door was nothing but waves so i replace all those and fixed the other imperfections and painted it, i had the guy put a little extra flake in it also.

about the exhaust i had someone bend it for me

that's funny i don't see them anywhere, maybe in my lifetime i have seen 10 different brown third gens

Jim 86 IROC

Those side rails look much like the 2"x4" South Side Machine SFCs I had welded into my '86 IROC about 8yrs ago.

They really helped with weight transfer and hook on launch.

z28z34man

They rely did seam to improve my launch, even with the 215 i have on there now it only spins bad when i want it to. They also got rid of most of my creaks and rattles.

Air_Adam

Dude, you could get hit by a train and not have a dent in those things!!

Total overkill? Maybe.. bad idea? Naw....
Good work man!

Comp788

The SFC are not too bad of a job there. Obviously home built but still should work pretty good.

As some of you might have seen my other thread 1982 Silver State Project. Once I get the new frame rails fabricated up. I'll put some pictures of the frame connectors as they are getting built. To attach the SFC to the body I am going to use 7 ga P&O (approx 3/16" thick) and the body of the SFC will be 1 3/4" DOM tubing that is .135 wall. I will show bending of the SFC tubes in my JD square bender. They will be welded with a Miller 250 amp mig welder. I'll also probably sell them once I get the design finished and installed. I want to work out the bugs before selling anything. They will be a weld in design and no provisions for bolt in.

The SFC that go into my car will also have supports to attach to my new frame rails to support the new transmission cross member. You'll see all of that as stuff becomes done in my thread.

I'll be in touch.

super_kev

iTrader: (4)

FWIW, I used 1.75" x .120" wall tube mounted to 1/8" plate on the LCA brackets. .250" is too thick IMO, but it's up to you.

KrisW

iTrader: (5)

I like that! A LOT!!

I'll being doing something VERY similar soon...

Nice pics; I hope you don't mind if I use them as reference material!

z28z34man

not a problem

crazycrocket

That is very nice looks just like how I did mine. I had a few slight differences. But yeah we should have a demo durby and see whos overkill subframe connecters impale the other guy first.

Here are some pics of when I first tack welded them in

JPrevost

You might have added a lot of weight but where it's at has probably lowered your center of gravity .