'70 crossmember modification?
Thread Starter
Racer
Joined: Jul 2004
Posts: 352
Likes: 1
From: Minneapolis Minnesota
'70 crossmember modification?
I can't find the original post, but someone as a side note modified their transmission crossmember so they could remove the exhaust in one piece.
I'm very interested in doing this if it does not weaken the frame. Could someone please post a pic of the right way to do this?
Thanks,
-Dan
I'm very interested in doing this if it does not weaken the frame. Could someone please post a pic of the right way to do this?
Thanks,
-Dan
Race Director
Joined: Nov 2000
Posts: 11,872
Likes: 12
From: Waterloo ontario Canada
Originally Posted by 70_Shark
I can't find the original post, but someone as a side note modified their transmission crossmember so they could remove the exhaust in one piece.
I'm very interested in doing this if it does not weaken the frame. Could someone please post a pic of the right way to do this?
Thanks,
-Dan
I'm very interested in doing this if it does not weaken the frame. Could someone please post a pic of the right way to do this?
Thanks,
-Dan
I don't know about posting pictures with this new forum. Last night I tried posting one and it wouldn't post.
I will try agian. I also feel me modified crossmember is as strong or stronger then stock.
Thread Starter
Racer
Joined: Jul 2004
Posts: 352
Likes: 1
From: Minneapolis Minnesota
Thanks norval,
I like your idea about moving the exhaust outward, but a lot of work. I don't own a welder so everything will have made then brought in.
Here is what I was thinking
forgive the drawing skills)
If I weld on the side reinforcement plates, maybe I don't need to make the caps for the holes?
-Dan
I like your idea about moving the exhaust outward, but a lot of work. I don't own a welder so everything will have made then brought in.
Here is what I was thinking
forgive the drawing skills) If I weld on the side reinforcement plates, maybe I don't need to make the caps for the holes?
-Dan
Last edited by 70_Shark; Jul 31, 2004 at 09:07 AM.
Race Director
Joined: Nov 2000
Posts: 11,872
Likes: 12
From: Waterloo ontario Canada
I can see your problem if you can't weld. For any welding shop in your area it would be cheap enough, far less then an hours work. The upper U plates need to be welded on, bolting is NOT good enough. It would never become and intrical part of the structure.
I would also make the U plate extend up as far as possible, the material at the top of the knotch is important. If you can extend this a little up towards the floor it will help alot.
You must have some friend who has a stick welder and will give you a hand?? Weld it in place.
I would also make the U plate extend up as far as possible, the material at the top of the knotch is important. If you can extend this a little up towards the floor it will help alot.
You must have some friend who has a stick welder and will give you a hand?? Weld it in place.
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Burning Brakes
Joined: Jan 2004
Posts: 769
Likes: 0
From: Ft. Lauderdale Fl
Originally Posted by 70_Shark
Thanks norval,
I like your idea about moving the exhaust outward, but a lot of work. I don't own a welder so everything will have made then brought in.
Here is what I was thinking forgive the drawing skills)
If I weld on the side reinforcement plates, maybe I don't need to make the caps for the holes?
-Dan
I like your idea about moving the exhaust outward, but a lot of work. I don't own a welder so everything will have made then brought in.
Here is what I was thinking
forgive the drawing skills) If I weld on the side reinforcement plates, maybe I don't need to make the caps for the holes?
-Dan
Instructor
Joined: May 2004
Posts: 167
Likes: 0
From: Pompano Bch Florida
I'm meeting a welder on monday to give me a price and time frame on building a tubular crossmember like the one's they sell for camaro's and chevell's. I want to be able to run 3" exshaust staight back and not hug the trans like a stock crossmember. I saw one posted a while back that some one had made with a saftey hoop built on. I'll post any info I get on monday. Is there any difference between the c3 crossmembers, or a 350or a 400 trans?
Team Owner
Joined: Jul 1999
Posts: 65,492
Likes: 230
From: Orange Park Florida
Yes, by the time the 350 trannies were used cat-assed-trophic converters were in use, and so the hump was introduced to the driver's side, no loop for the exhaust, just on the pass side...
GENE
GENE
Melting Slicks
Joined: May 2002
Posts: 2,508
Likes: 0
From: Wisconsin
Originally Posted by Twin_Turbo
Now I'm having second thoughts also, maybe I SHOULD modify my already hacked up crossmember to something like Norval has...hmmm.....
.
Race Director
Joined: Dec 1999
Posts: 16,945
Likes: 9
Originally Posted by Schmucker
Just make a tubular one. The stock one is a big heavy thing that really should have never been put on a sports car in the first place. Same with the differential crossmember.
Last edited by Twin_Turbo; Aug 1, 2004 at 09:09 AM.
Racer
Joined: Jul 2004
Posts: 492
Likes: 0
From: Burlington Ky
You might want to check out Bowtieoverdrives. I don't know if they have one for the stock tranny, you'll have to look, but I do know that they have them for O/D conversions. (I bought one, nice unit) It hugs the floorpan very closely, so you can do whatever you want with exhaust.
