Crossmember install fail
Thread Starter
Staging Lane
Joined: Nov 2011
Posts: 84
Likes: 0
Crossmember install fail Here is a pic of the crossmember I had installed at a "custom" shop. I didn't realize that there is no room for the exhaust until I was on my way to the muffler shop until I thought about it. I guess I will have to section the crossmember and install a piece of square tubing for exhaust. Anybody have any suggestions besides aftermarket crossmembers? 74 Nova 6.0/4l80e
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Verdad Gallardo Mine is 3" also, our home depot definitely does not carry schd. 40. You might try a metal recycler or even ebay you can buy 12" lengths on ebay. You can even you steel tubing .187 or .250 wall.
You can get whatever size you want at metalsdepot.com It will cost you about $20 plus shipping for 4".
http://www.metalsdepot.com/products/...LimAcc=$LimAcc
http://www.metalsdepot.com/products/...LimAcc=$LimAcc
Last edited by LS1MCSS; May 5, 2012 at 11:18 AM.
For 3" you can use 4" pipe OD is 4.5 ID is appx 4", or you can use 4" tube (4" OD) with a wall thk of .187 ID appx 3.625". I have V-bands on my exhaust and the flange just passes thru the 4" tube, another option is to cut the pipe in half and cut a half circle in your x-member and fill the half circle with the pipe half, thus making an opening for your exhaust to tuck up into.
TECH Resident
Joined: Mar 2012
Posts: 821
Likes: 4
From: Elkridge MD
I just welded in extensions on the old brackets on the frame where my crossmember originally mounted, and then used the original crossmember.
You can see the extension we added near the saw blade in this pic:
You can see the extension we added near the saw blade in this pic:
Yep.. 
I would make it like the one in the pic.. Leave a long enough straight section to move the crossmember incase you have to pull Trans.
That diff is not backwards..
..that would be a 9", 8.8 is setup like a GM 8.5.
That diff is not backwards..
..that would be a 9", 8.8 is setup like a GM 8.5. Thread Starter
Staging Lane
Joined: Nov 2011
Posts: 84
Likes: 0
Good call on the Sched. 40. I picked up 2' from the scrap yard for $9. Its 4" pipe, but I i am going to half the pipe so the exhaust will just fit up in the half circle. Harbor Freight had a sale today so I was able to pick up 4.5" cut-off wheel to do the work. I also picked up some .023 to do the welding with gas shield. The main reason I had someone else do it was because of the welding, i'm not confident enough to do a structure piece, but I guess I will have to. I have a 220V welder so i'm sure its capable.
The Driveshaft is a little short, but it has plenty of engagement. I gave the shop the length with the 1" subtracted already, but they subtracted another inch.
The Driveshaft is a little short, but it has plenty of engagement. I gave the shop the length with the 1" subtracted already, but they subtracted another inch.
Wire Good call on the Sched. 40. I picked up 2' from the scrap yard for $9. Its 4" pipe, but I i am going to half the pipe so the exhaust will just fit up in the half circle. Harbor Freight had a sale today so I was able to pick up 4.5" cut-off wheel to do the work. I also picked up some .023 to do the welding with gas shield. The main reason I had someone else do it was because of the welding, i'm not confident enough to do a structure piece, but I guess I will have to. I have a 220V welder so i'm sure its capable.
The Driveshaft is a little short, but it has plenty of engagement. I gave the shop the length with the 1" subtracted already, but they subtracted another inch.
The Driveshaft is a little short, but it has plenty of engagement. I gave the shop the length with the 1" subtracted already, but they subtracted another inch.
my .02
